The current in the Primary coil of an ideal step-down transformer is 0.125A.
The transformer is a device that is used to change the value of alternating voltage from one value to another, according to the requirements. It is of two types namely, Step up transformer and Step-down Transformer.
If we assume that the efficiency of a transformer is 100 percent, then the power in the primary coil is equal to the power in the secondary coil.
Power is expressed as P=V×I
Where P is power, V is voltage, and I is current.
if the transformer is ideal then;
Output power = Input power
(V output)×(I output) = (V input)×(I input)
=> 30 = 240×(I input)
=> I input = 30/240 = 0.125 A
Thus, the current in the Primary coil of an ideal step-down transformer is 0.125A.
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block?
km
min²'
10) A 209g block slides down a ramp with an acceleration of 2,000.
acting on the block?
What force is acting on the block?
116.11 N is the force.
We have given that mass= 209g=0.209Kg
acceleration=2000Km/min²=555.556m/s².
We know that
F=m.a
= 0.209kg x 555.556m/s².
=116.11N
Force is an influence that can change the position or the motion of an object. In other words it can be stated as change in velocity of the object with respect to mass. it has both magnitude and direction. its unit is N.
Mass it is a quantitative measure of all the matter in this universe. it is can be measured as the amount of matter of an object . it unit is kilogram (Kg).
Acceleration is defined as the rate of change which occur in the velocity of an object with respect to time. its unit is m/s².
So from the above data the force acting is 116.11N
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a small block has constant acceleration as it slides down a frictionless incline. the block is released from rest at the top of the incline, and its speed after it has traveled 6.20 m to the bottom of the incline is 3.80 m/s .
When the block is 5.00 m from the incline's summit, its velocity is 3.04 m/s.
provided details:
s = 7.80 m
v = 3.8 m/s
if s = 5 m, v?
The block's acceleration must first be determined using the following equation:
Since v02 = 0 due to v2 = v02 + 2as,
3.8² = 2 a 7.8
a = 0.93
Consequently, the final speed is if s = 5m.
v² = 2 (0.93) (5)
= 9.26
v = √9.26
= 3.04 m/s
Complete Question -A small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 7.80 m to the bottom of the incline is 3.80 m/s .What is the speed of the block when it is 5.00 m from the top of the incline? Please show the detailed formulas utilized to obtain the final answer.
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James has an old kettle with a power rating of 1.4 kW. He buys a new kettle with a power rating of 2.0 kW. How does this affect the time it takes to boil a fixed volume of water?
The old kettle with a power rating of 1.4 kW and the new kettle with a power rating of 2.0 kW, due to this the time it takes to boil a fixed volume of water will decrease.
What is Power?The amount of work finished in a specific length of time is a definition of power. Watt (W), which is derived from joules per second (J/s), is the SI unit of power. Horsepower (hp), which is roughly equivalent to 745.7 watts, is a unit of measurement sometimes used to describe the power of motor vehicles and other devices.
A person's power is always based on the amount of labor they put in, thus if they work differently at different times, their power will likewise vary. Here is when the idea of average power enters the picture.
According to the question,
Power=Work done/time
Hence, as the power will increase, the time will automatically decrease because both are inversely proportional to each other.
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Answer:
The water will boil in less time.
At the instant a ball is fired horizontally over a level range, a ball held at the side of the first is released and drops to the ground. If air resistance can be neglected, which ball – the one threw or the one dropped from rest – strikes the ground first? Why?
Explanation:
The ball that dropped to the ground instead of being thrown will fall first since it only has one force pushing it: gravity.
The other ball has momentum from the horizontal throw so it's fighting against the gravity of the earth to keep going forward. Therefore, the ball dropped instead of thrown is the one that will strike the ground first.
What mass of the following solutes will dissolve in 100 g of water?
KCL at 50 c?
Pb(NO3)2 at 50 C?
A solute is a material that dissolves in a solution. The amount of solvent present in fluid solutions is larger than the amount of solute. The two most common examples of solutions in daily life are salt and water. Salt is the solute because it dissolves in water.
For KCl at 50 C.
42.6 g KCl x (35.0g H2O/100 g H2O) = 14.9 which means 14.9 g KCl can be dissolved in 35.0 g H2O. Because 19.7 g of KCl is more than what will dissolve, it will be saturated.
For Pb(NO3)2 at 50 C
The solubility of Pb([tex]NO_{3}[/tex])² Pb( [tex]NO_{3}[/tex] )² is 56.5 g/100 mL at 20∘C 20 ∘ C Thus, 100 mL of water can dissolve 56.5 g of Pb([tex]NO_{3}[/tex])² P b ( [tex]NO_{3}[/tex])²
The mass of the following solutes are
19.7 g of KCl
56.5 g of Pb([tex]NO_{3}[/tex])²
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You whirl a 2-kg body attached to a 1-meter cord around your head in a nearly horizontal circle with a speed of 4 m/s. the tension in the cord is:_________
The tension in the cord is 32 N if a 2-kg body attached to a 1-meter cord is whirled around the head.
CalculationF = (2 x [tex]4^{2}[/tex])/1
F = 2*16
F = 32N
Concept of tension force:In physics, tension is defined as the pulling force transmitted axially by a string, cable, chain, or another similar object, or by either end of a rod, truss member, or another comparable three-dimensional object.
Tension can also be thought of as the action-reaction pair of forces acting at each end of the aforementioned elements.
What is the tension force formula?The tension formula is expressed as. T=mg+ma. Where g = the acceleration caused by gravity (9.8 m/s2) and T = tension (N or kg-m/s2).
What kind of force is tension explain with an example?The example would be drawing Water with a bucket from a Well.
One of the best illustrations of tension forces is the process of drawing water from a well. It uses a rope with one end fastened to the bucket handle and the other end free to move.
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At the end of the experiment you will be assessing the purity of your aspirin by measuring its absorbance at 525 nm. If the absorbance measurement is found to be 0. 010 then what is the % salicylic acid impurity in your aspirin?.
The absorbance of ASP and Sal standard mixed solutions in different concentrations (0.05 to 30 and 0.02 to 8 ug/ml for ASP and SAL, respectively) was measured against solvent (H2O; ACN 90: 10v/v) as blank at 229 nm and 296 nm.
Calibration graphs were created by graphing absorbance versus concentrations and using regression equations.
The calibration graphs revealed that ASP and SAL follow Beer's law. ASP and SAL at values of 0.3-30 and 0.1-10 pg/ml, respectively. Statistical parameters were computed, demonstrating that Tcal values were greater than Ttab values. Good linearity was detected, with R2 values of (0.9996 and 0.9992, respectively) for ASP and SAL. The calibration plot's linear regression results indicate a solid linear connection between concentration fluctuation and response.
Regression analysis was used to determine linearity.
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3. Which of the following best represents the estimated age of the universe?
13.7 billion
37 billion
13.7 million
3.7 million years
Based on a Hubble Constant of 70, the universe is thought to be 13.7 billion years old. The Hubble Constant of 82.4 determined by Jee's team places the universe's age at roughly 11.4 billion years.
What is a Universe ?Everything exists in the cosmos. It encompasses all of space as well as the matter and energy that it holds. Even time is a part of it, and you are obviously a part of it. Along with the other planets and their numerous moons, Earth and the Moon are all components of the cosmos.
Numerous religious people, including a large number of scientists, believe that God created the cosmos and the numerous processes guiding physical and biological evolution, and that these processes later led to the creation of galaxies, our solar system, and life on Earth.Hence, estimated age of the universe is 13.7 billion years old
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Difference between hyperbola and parabola (2 points)
Answer: GoodMorning: ) ✨ So we should know that A parabola is defined as a set of points in a plane which are equidistant from a straight line or directrix and focus, and that The hyperbola can be defined as the difference of distances between a set of points, which are present in a plane to two fixed points is a positive constant. So what what I mean by that is that if you have like a y squared term but no x squared term or vice versa so you have an x squared term but no y squared term then you know it's a parabola.
Hope This Helps <3 ✨
38. The decomposition of animal waste by anaerobic bacteria produces biogas (change A). The biogas is
then burnt fuel (change B). What are the similarities between two changes.
The decomposition of animal waste by anaerobic bacteria produces biogas methane . The biogas is then burnt fuel (carbon dioxide).
methane and carbon dioxide both are carbon compound, both are in gaseous form, and both are green house gasesA gas without color or smell, methane. It is also known as methyl hydride or marsh gas. It is quickly set ablaze. They are lighter than air, the vapors. The canisters may violently burst and shoot into the air when exposed to fire or extreme heat for an extended period of time. It is a component of natural gas, a fuel, and is utilized in the production of other chemicals.One carbon atom makes up the molecule methane, which has four hydrogen atoms bound to the carbon by single bonds. It is a colorless, odorless, non-toxic, flammable gas with a melting point of -161°C. It performs three functions: fossil fuel, greenhouse gas, and bacterial metabolite.To know more about methane visit : https://brainly.com/question/2127750
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The region around the earth where charged particles are trapped and spiral around is called:______.
The region around the earth where charged particles are trapped and spiral around is called magnetosphere .
The motion of charged particle in electric and magnetic field.
F = q(v x B).
Where, the magnetic force becomes centripetal force due to its direction towards the circular motion of the particle.
Hence, if the field (B) and velocity (v ) are perpendicular to each other, then the particle takes a circular path.
And in the above equation , F is magnetic force on charge particle q & B is the magnetic field .
The magnetosphere of the earth can be explained in term of astronomy and planetary science as that, a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field.
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three equal point charges, each with charge 1.95 μc , are placed at the vertices of an equilateral triangle whose sides are of length 0.450 m . what is the electric potential energy u of the system? (take as zero the potential energy of the three charges when they are infinitely far apart.)
The electric potential energy U of the system is 11.39 * [tex]10^{-2}[/tex] J
We know that,
U = [tex]q^{2}[/tex] / 4 π ε₀ d
where,
U = Electric potential energy
q = Point charge
ε₀ = Permittivity of free space
d = Length
Given that,
q = 1.95 * [tex]10^{-6}[/tex] C
d = 0.45 m
ε₀ = 8.85 * [tex]10^{-12}[/tex] [tex]C^{2}[/tex] N [tex]m^{2}[/tex]
U = [tex]U_{1}[/tex] + [tex]U_{2}[/tex] + [tex]U_{3}[/tex]
U = 3 [tex]q^{2}[/tex] / 4 π ε₀ d
U = 8.99 * [tex]10^{9}[/tex] * 3 * ( 1.3 * [tex]10^{-6})^{2}[/tex] / 0.45
U = 11.39 * [tex]10^{-2}[/tex] J
Electric potential energy is the amount of energy that is needed to move a charge against an electric field.
Therefore, the electric potential energy U of the system is 11.39 * [tex]10^{-2}[/tex] J
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A current of 0.2A flows through a component with a resistance of 40 ohms. Calculate the potential difference.
The potential difference of a current of 0.2A that flows through a component with a resistance of 40 ohms is 8V.
How to calculate potential difference?Potential difference is difference in potential energy between two points in an electric field i.e. the difference in charge between two points in an electrical circuit.
The potential difference of an electrical current can be calculated by multiplying the current by the resistance as follows:
Voltage = current (I) × resistance (R)
According to this question, a current of 0.2A flows through a component with a resistance of 40 ohms. The potential difference is as follows:
V = 0.2A × 40ohms
V = 8V
Therefore, the potential difference of a current of 0.2A that flows through a component with a resistance of 40 ohms is 8V.
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While a pure substance is melting, additional heat will cause the temperature of a substance to:_______-
Additional heat will boost the temperature of the liquid once all of the solid has melted.
It is possible to recognize pure compounds and elements by their distinctive melting temperature, which is a characteristic number.
What happens to a pure substance’s temperature as it melts?Energy is solely directed at changing a substance’s phase during melting; it is not used to alter the substance’s temperature.
Because a substance maintains the same temperature during melting, it is an isothermal process.
What changes in a substance’s temperature occur during melting and boiling?Even when any kind of heat is applied, the substance’s temperature remains properly constant during melting and boiling.
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you are driving eastbound on the interstate at 70 mi/hmi/h . you observe that you are approaching a truck in your lane at a relative speed of 15 mi/hmi/h .
The velocity of the truck in relative to the highway is 55 mi / hr
We know that,
[tex]V_{rel}[/tex] = V - [tex]V_{obs}[/tex]
where,
[tex]V_{rel}[/tex] = Relative velocity
V = Object velocity
[tex]V_{obs}[/tex] = Observer velocity
Given that,
[tex]V_{rel}[/tex] = 15 mi / hr
V = 70 mi / hr
[tex]V_{rel}[/tex] = V - [tex]V_{obs}[/tex]
Here the observer is the truck
[tex]V_{rel}[/tex] = V - [tex]V_{truck}[/tex]
15 = 70 - [tex]V_{truck}[/tex]
[tex]V_{truck}[/tex] = 55 mi / hr
Relative velocity is the velocity of an object with respect to another observer.
Therefore, the velocity of the truck in relative to the highway is 55 mi / hr
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The expression like a ton of bricks means “a crushing weight.” Would being hit by an actual ton of bricks hurt if it happened on the moon?(1 point)
Responses
No, it would not hurt because the bricks would have little mass.
No, it would not hurt because the bricks would have little mass.
Yes, it would hurt because the bricks would still have the same mass.
Yes, it would hurt because the bricks would still have the same mass.
No, it would not hurt because the bricks would have more weight.
No, it would not hurt because the bricks would have more weight.
Yes, it would hurt because the bricks would still have more weight.
HELP FAST
Yes, being hit by an actual ton of bricks would still hurt because the bricks would still have the same mass.
What is Mass?This is referred to as the quantity of matter which is present in a body or object and is usually measured in kilogram.
On the moon which has a very weak gravitational force, the mass of an object is usually the same when compared to that on earth which is the reason why the individual will experience the same feeling of being hurt by the impact of the bricks.
This is therefore the reason why option B was chosen as the most appropriate choice.
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When the parachute is fully open, the effective drag coefficient of the skydiver plus the parachute increases to 60. 0 kg/m. What is the drag force fdrag acting on the skydiver immediately after she has opened the parachute?.
After the effective drag coefficient of the skydiver plus the parachute increases to 60. 0 kg/m, drag force acting on the skydiver immediately after she has opened the parachute is found to be 188160N.
When a skydiver opens their parachute, what force increases?Air pressure
An open parachute expands the skydiver’s cross-sectional area as he falls, increasing the amount of air resistance he faces (as observed in the animation below).
As soon as the parachute is opened, air resistance outweighs the pull of gravity.
How does the drag formula work?According to the drag equation, drag D is equal to the drag coefficient. Cd multiplied by density r, velocity V squared, and the reference area.
We must choose a value for Cd in order to calculate drag given the air conditions, shape, and inclination of the object.
Here we know,
K[tex]v^{2}[/tex] = mg
K[tex]v^{2}[/tex] = 80 x 9.8
K[tex]v^{2}[/tex] = 784.5
V = 56 m/s
Then fdrag = [tex]60*(56)^2[/tex]
fdrag = 188160 N
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Complete Question
A skydiver of mass 80.0 kg (including parachute) jumps off a plane and begins her descent. for the magnitude of the Throughout this problem use 9.80 acceleration due to gravity.
When the parachute is fully open, the effective drag coefficient of the skydiver plus the parachute increases to 60. 0 kg/m. What is the drag force fdrag acting on the skydiver immediately after she has opened the parachute?
URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The diagram below shows a
portion of the electromagnetic
spectrum. Which of the
following statements correctly
explains the relationship
between FM and AM radio
waves?
Answer:
It's C
Explanation:
The reason why is since AM is longer as shown in the diagram it's either A or C, and since longer wavelengths have less energy it's C.
Consider what you know about our sun and ways that energy is released
Answer:
Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a helium atom. This process, known as a PP (proton-proton) chain reaction, emits an enormous amount of energy.
Explanation:
Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun’s core and fuse to create a helium atom.
This process, known as a PP (proton-proton) chain reaction, emits an enormous amount of energy. In its core, the sun fuses about 620 million metric tons of hydrogen every second. The PP chain reaction occurs in other stars that are about the size of our sun, and provides them with continuous energy and heat. The temperature for these stars is around 4 million degrees on the Kelvin scale (about 4 million degrees Celsius, 7 million degrees Fahrenheit).
in the 1991 world track and field championships in tokyo, mike powell jumped 8.95 m, breaking by a full 5 cm the 23-year long-jump record set by bob beamon. assume that powell’s speed on takeoff was 9.5 m/s (about equal to that of a sprinter) and that g 9.80 m/s2 in tokyo. how much less was powell’s range than the maximum possible range for a particle launched at the same speed?
Mike Powell's range was 0.26 m less than the maximum possible range.
We know that,
Horizontal range of the projectile on a flat ground is,
R = v² sin 2θ / g
where,
R = Range
v = Velocity
θ = Angle of projection
g = Acceleration due to gravity
Given that,
v = 9.5 m / s
The maximum possible range of a projectile is achieved when the angle of projection is 45°
R = 9.5² sin 90° / 9.8
R = 9.21 m
The difference between maximum range and Mike Powell's range is
R = 9.21 - 8.95
R = 0.26 m
In a projectile motion, range is the horizontal distance between starting and ending point.
Therefore, Mike Powell's range was 0.26 m less than the maximum possible range.
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Question 8 of 29
Which of the following is an example of Newton's second law of motion?
OA. A wheelbarrow is more difficult to move as more objects are
placed inside.
OB. When a gymnast jumps off the ground, Earth also exerts a force
on the gymnast.
OC. Rocks lose energy as they roll down a hillside.
OD. A satellite in space can travel without slowing down, even after
using up all its fuel.
Answer:
Option AExplanation:
In reality what they are trying to say, is that we need to exert more force to accelerate a wheelbarrow that has more mass.
In other words, when mass increases the force exerted to maintain an acceleration increases as well, and this is given by newton's second law of motion, which suggests that the force exerted on a system is proportional to the mass of that system.
[tex]F=ma[/tex]
a long, thin straight wire with linear charge density λλ runs down the center of a thin, hollow metal cylinder of radius rr. the cylinder has a net linear charge density 2λ2λ. assume λλ is positive.
The expressions for the magnitude of the electrical field strength inside the cylinder, r is,
E = λ/2ε₀πr
What is electric field?
The electric field is the field, which is surrounded by the electrical charged. the electrical field is the electric force per unit charge. Here an extended , thin straight wire with linear charge density λ runs down the middle of a thin, hollow metal cylinder of radius R.
As the electric flux is the product of electric flux and the area of the cylinder. Thus,
φ = E(2πrL) .................1
This electric flux also can be given as,
φ = λL/ε₀ ......................2
Where, ( λ) is that the linear charge density. On comparing both the equation, we get,
Ε(2πrL) = λL/ε₀
E = λ/ 2ε₀πr
The cylinder features a net linear charge density 2λ where λ is positive. Thus for this hollow cylinder, the electrical filed can be given as,
E = λ/2ε₀πr
For charge inside the cylinder, where r < R, are often expressed with the following expression,
E = λ/2ε₀πr
Charge density :The charge density is that the measure of electric charge per unit area of a surface, or per unit volume of a body or field. The charge density tells us what proportion charge is stored in a particular field. Charge density are often determined in terms of volume, area, or length.
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the top and bottom ends of a windshield wiper blade are 33 inches and 13 inches, respectively, from the pivot point. while in operation, the wiper sweeps through 165°.
The area swept by the wiper blade is 1324.04 inches^2.
The top and bottom ends of a windshield wiper blade move in the form of a circle.
The area swept by the wiper blade can be calculated by subtracting the area covered by the bottom end by the area covered by the top end i.e,
Area swept by blade(A) = Area covered by top end of blade - Area covered by bottom end of blade
A = A1 - A2
A1 = π(13)^2 x 165/360 = 1567.25 inches^2
A2 = π(33)^2 x 165/360 = 243.21 inches^2
A= 1567.25 - 243.21 = 1324.04 inches^2
Thus, the area swept by the wiper blade is 1324.04 inches^2.
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Use differentials to estimate the amount of metal in a closed cylindrical can that is 10 cm high and 4 cm in diameter if the metal in the top and bottom is 0. 1 cm thick and the metal in the sides is 0. 05 cm thick.
The amount of metal in a closed cylindrical can that is 10 cm high and 4 cm in diameter if the metal on the top and the bottom is 0.1 cm thick and the metal on the sides is 0.05 cm thick is 8.8 cm.
The formula for calculating the volume of a cylinder is given below.
V = πr^2 h
Get the differential of the volume as shown:
dV = V/ h dh + V / r dr
V/ h = πr^2
V/ h = 2 πr h
Now, the differential becomes
dV = πr^2dh + 2πrh dr
Given the following parameters
dh = 0.1 + 0.1 = 0.2 cm
dr = 0.05 cm
h = 10 cm
r = 4 cm
Substituting the values in the above equation, we get
dV = 3.14(2)^2(0.2) + 2(3.14)(2)(10)(0.05)
dV = 2.512 + 6.28
dV = 8.792 cm
dV = 8.8 cm
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How many valence electrons does the ground-state electron configuration of nitrogen have?.
Answer:
it has 5 valence electrons
Explanation:
nitrogen has a total of 5 valence so doubling that we would have a total of 10 valence electrons with 2 nitrogen atoms
Jessica jogs on a path that is 25 kilometers long to get to the park that is south of the jogging . If it takes Jessica 2.5 hours then
The speed of Jessica as she jogs on a path that is 25 kilometers long in 2.5 hours is 10 km/hr.
What is the speed of a moving body or object?The speed of a moving body or object is the distance covered by the moving body over a given period of time.
Mathematically, speed is expressed as follows;
speed = distance covered/time takenThe units of speed include; km/hr/ mi/hr, m/s, etc.
Considering the information provided about the movement of Jessica:
The distance or path length covered by Jessica = 25 kilometers
Time taken to cover the distance = 2.5 hours
Speed of Jessica during the jogging period = 25 km/2.5 hrs
Speed of Jessica = 10 km/hr
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a small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 7530 n/c. the mass of the water drop is 3.09 × 10-9 kg. how many excess electrons or protons reside on the drop?
The number of excess protons that reside on the drop is 2.52 * [tex]10^{-6}[/tex]
To suspend a water drop in mid air, the electric field force must point in upward direction. This means that the charge is positive i.e., Protons.
∑ [tex]F_{y}[/tex] = [tex]F_{E}[/tex] - mg = 0 ( Since it is motionless )
[tex]F_{E}[/tex] = mg = qE
q = mg / E = Ne
N = mg / eE
where,
N = No. of Protons
m = Mass of the water drop
g = Acceleration due to gravity
e = Electric charge
E = Magnitude of electric field
Given that,
m = 3.09 * [tex]10^{-9}[/tex] kg
g = 9.81 m / [tex]s^{2}[/tex]
e = 1.6 * [tex]10^{-6}[/tex] C
E = 7530 N / C
N = ( 3.09 * [tex]10^{-9}[/tex] * 9.81 ) / ( 1.6 * [tex]10^{-6}[/tex] * 7530 )
N = 30.31 * [tex]10^{-9}[/tex] / 12.048 * [tex]10^{-3}[/tex]
N = 2.52 * [tex]10^{-6}[/tex]
Protons are the positive charges that are present in an atom. It is present inside the nucleus of an atom.
Therefore, the number of excess protons that reside on the drop is 2.52 * [tex]10^{-6}[/tex]
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You push horizontally on a 120 N box that is initially resting on a horizontal table. The coefficient of static friction between the box and the table is 0.75 and the coefficient of kinetic friction is 0.40. Find the friction force on the box if push is equal to 84 N.
The static frictional force acting on the block is equal to 90 Newton's.
What is Friction?
Friction is a force that acts opposite to the direction of motion of body in order to oppose its motion. Frictional force is of two types -
The Static frictional Force - F[s] = μ[s] N
The Kinetic frictional force - F[k] = μ[k] N
Given in the question is a box of weight 120 N initially resting on a horizontal table. From the data given, we can write -
Weight of box [W] = 120 Newton
Coefficient of static friction (μ[s]) = 0.75
Coefficient of Kinetic friction (μ[k]) = 0.40
Horizontal push (F[h]) = 84 N
We know that -
F[s] = μ[s] N [Static friction]
F[k] = μ[k] N [Kinetic friction]
Now, initially the box is at rest so the opposite frictional force will be 0. When a horizontal force of 84 Newton is applied on it, the static friction will try to oppose the motion. For forward motion of the block -
F[h] = F[s]
F[h] = μ[s]
84 = 0.75 x 120 (Normal Reaction [N] = Weight)
84 = 90 ≥ 0
- 6 = 0
which is false.
This means that the static frictional force is greater than horizontal push and opposes the motion. The force due to static friction will only exist since, the body was able to move, so kinetic friction is of no use here.
So, the frictional force on the block will be = F[s] = μ[s] N = 90 Newtons.
Therefore, the static frictional force acting on the block is equal to 90 Newton's.
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Why is important for scientists to write detailed procedures?
Answer:Why is important for scientists to write detailed procedures?
Explanation: it lets someone else duplicate your experiment exactly
Rennata Gas is driving through town at 25.0 m/s and begins to accelerate at a constant rate of -1.0 m/s². Eventually Rennata comes to a complete stop. Represent Rennata's accelerated motion by sketching a velocity-time graph. Use kinematic equations to calculate the distance which Rennata travels while decelerating. Then use the velocity-time graph to determine this distance. PSYW.
The correct answer is d = 312.5 m.
These formulas are used to describe an object's linear motion. Positive acceleration is present if the thing accelerates.
The equations utilised are as follows:
v = u + at
d = ut + 0.5 at^2
v^2 = u^2 + 2 ad
initial velocity u = 25 m/s
acceleration a = - 1 m/s^2
V is equal to zero in the end.
Let d represent the distance covered.
Now, with the third motion equation,
v^2 = u^2 + 2ad
0 = 25^2 - 2 × 1d
d = 312.5 m
The area between the line on the graph and the time axis can be used to calculate the distance travelled.
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