Answer:
Since it is falling freely, the only force on it is its weight, w. w = m ⋅ g = 1000kg ⋅ 9.8m s2 = 9800N To draw a Free Body Diagram, draw an elevator cage (I am sure you would get lots of points for drawing it with intricate detail) with a downward force of 9800 N. I hope this helps,
Explanation:
Explanation:
❀ [tex] \underline {{\underline{ \text{Given} }}}: [/tex]
Mass ( m ) = 1000 kgAcceleration ( a ) = 9.8 m/s²❀ [tex] \underline{ \underline{ \text{To \: find}}} : [/tex]
Force ( F )❀ [tex] \underline{ \underline{ \text{Solution}}} : [/tex]
[tex] \boxed{ \sf{force = mass \times acceleration}}[/tex]
Plug the known values :
⟶[tex] \sf{1000 \times 9.8}[/tex]
⟶ [tex] \sf{9800 \: N}[/tex]
[tex] \red{\boxed{ \boxed{ \tt{⟿ \: Our \: final \: answer : 9800 \: N}}}}[/tex]
Hope I helped !♡
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What is the force of gravitational attraction between an object with a mass of 2kg and another that has a mass of 2kg and a distance between them of 2.5 m
Answer:
Explanation:
F = 0.000000000042716 or 4.2688e-11
G = 6.67 × 10−11 Nm2 /kg2
m1 = 2kg
m2 = 2kg
R = 2.5 m ⇒ R^2 = 6.25
F = 6.67 × 10^−11 ( 2 * 2) / 6.25
⇒ F = 6.67 × 10^−11 (4) / 6.25
⇒ F = 2.668e-10 / 6.25
∴ F = 4.2688e-11
The radius of a planet is three times that of Earth and its mass is nine times that of Earth. The acceleration due to gravity on this planet is _________g.
Answer:
9.836 ms^-2
Explanation:
If
r= 3re
m= 9me
But
g= Gm/r^2
G= 6.67 × 10^-11
me= 6 × 10^24 Kg
re= 6.38 × 10^6 m
g= 6.67 × 10^-11 × 9×6 × 10^24/(3 ×6.38 × 10^6)^2
g= 9.836 ms^-2
An electron remains suspended between the surface of the Earth (assumed neutral) and a fixed positive point charge, at a distance of 5.3 m from the point charge. Determine the charge required for this to happen.
This question is not complete, the complete question is;
An electron remains suspended between the surface of the Earth (assumed neutral) and a fixed positive point charge, at a distance of 5.3 m from the point charge. Determine the charge required for this to happen. The acceleration due to gravity is 9.8 m/s² and the Coulomb constant is 8.98755 x 10⁹ N.m²/C². Answer in units of C.
Answer: the charge required for this to happen is 1.7415 × 10¹⁹ C
Explanation:
Given the data in the question;
we know that gravitational force on electro = M×g
mass of electron m = 9.10938356 × 10⁻³¹ kilograms
charge of electron e = 1.60217662 × 10⁻¹⁹ coulombs
given that distance r = 5.3m and the Coulomb constant = 8.98755 x 10⁹ N.m²/C²
g = 9.8 m/s²
Now for the electron to be suspended, This will happen only if the electrostatic force is equal to weight of electron;
[ (1/4πε0) × q × e] / r² = m × g
so we substitute
8.98755 x 10⁹ × q × 1.60217662 × 10⁻¹⁹/[5.3]² = 9.10938356 × 10⁻³¹ × 9.8
q = 8.9271 × 10⁻³⁰ / 5.1262 × 10⁻¹¹
q = 1.7415 × 10¹⁹ C
Therefore the charge required for this to happen is 1.7415 × 10¹⁹ C
[1.43996 × 10⁹ × q] / 29.09 = 8.92719 x 10⁻³⁰
1.43996 × 10⁹ × q = 2.5969 × 10⁻²⁶
q = 2.5969 × 10⁻²⁶ / 1.43996 × 10⁹
q =
Two astronauts, A and B, both with mass of 60Kg, are moving along a straight line in the same direction in a weightless spaceship. Relative to the spaceship the speed of A is 2 m/s and that of B is 1 m/s. A is carrying a bag of mass 5 Kg with him. To avoid collision with B A throws the bag with a speed v relative to the spaceship towards B catches it. Find the minimum value of v.
Answer:
[tex]V=14m/s[/tex]
Explanation:
From the Question we are told that
Mass of A and B is 60kg
Speed of A=2m/s
Speed of B=1m/s
Mass of bag =5kg
Generally the momentum of the astronaut A and bag is mathematically given as
[tex]M_A=(60+5)*2[/tex]
[tex]M_A=130kgm/s[/tex]
Generally to avoid collision the speed of astronaut be should be less than or equal to that of astronaut A with the bag
Therefore for minimum requirement speed of astronaut A should be given by astronaut B's speed which is equal to 1
Therefore
[tex]130=(60*1)=(5*v)[/tex]
[tex]V=14m/s[/tex]
To avoid collision with B, A throws the bag with a speed of 26 m/sec.
Given-
The mass of the two astronauts A and B is 60 kg.
The mass of astronaut A is 65 kg with the box.
The speed of astronaut A is 2 m/sec.
The speed of astronaut B is 1 m/sec.
The mass of the bag is 5 kg.
The momentum of a body is the product of its mass and velocity. Thus the momentum of astronaut A is,
[tex]M_{A} =m_{a} \times v_{a}[/tex]
[tex]M_{A} =(60+5)\times2[/tex]
[tex]M_{A} =130[/tex]
To avoid the collision with B, A throws the bag with a speed v. For this the momentum after the trough must be equal to the momentum of A. Therefore,
[tex]M_{A} =5\times v_{r}[/tex]
[tex]130 =5\times v_{r}[/tex]
[tex]v_{r}= \dfrac{130}{5}[/tex]
[tex]v_{r}=26[/tex]
Hence, to avoid collision with B, A throws the bag with a speed of 26 m/sec.
For more about the velocity, find the link below-
https://brainly.com/question/862972
whats 100+50+89+2000☹️
Answer:
2239
Explanation: Stack addition
Answer: 2,239
Explanation: do 2OOO + 1OO + 5O + 89, that will give you 2,239.
4. Mr. Ames is dragging a box full of books from his office to his car. The box and books together have a
combined weight of 134 N. If the coefficient of static friction between the pavement and the box is 0.55, low hard
must Mr. Ames push horizontally on the box in order to start it moving?[74N]
Answer:
F = 73.7 N = 74 N (rounding off)
Explanation:
In order to get the box to start moving, Mr. Ames must push it with a force equal to the frictional force acting on it. Therefore, this force can be calculated through the following formula:
[tex]F = frictional force = \mu R[/tex]
where,
μ = coefficient of friction = 0.55
R = Normal Force on Box = Weight of Box with books = 134 N
Therefore,
[tex]F = (0.55)(134\ N)\\[/tex]
F = 73.7 N = 74 N (rounding off)
Help please
Stress is a ______________ that's created when we react to particular events.
Flag this Question
Question 2 5 pts
What signals the adrenal glands to produce more of the hormones adrenaline and cortisol and release them into the bloodstream?
Group of answer choices
hyperextension
hypothalamus
hypodermis
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Question 3 5 pts
When the adrenal glands produce more of the hormones adrenaline what are two of the body’s reaction to these additional hormones:
Group of answer choices
heart rate slows down and pupils constrict
blood pressure and metabolism decrease
heart rate speeds up and sweat is produced
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Question 4 5 pts
Match the following terms with their appropriate definitions.
Group of answer choices
the stress response
the events that provoke stress
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Question 5 5 pts
The article talks about building up your resilience to cope with stress. What does resilience mean?
Group of answer choices
the capacity to recover quickly from difficulties
incapable of change
not good in stressful situations
Flag this Question
Question 6 5 pts
What are two ways that you can control stress?
Group of answer choices
compulsiveness and pesim
Answer:
This doesn't seem to really be a physics problem:
In physics stress is usually defined as Young's Modulus or Bulk Modulus
In the case of Young's Modulus Y would be defined as
Y = Stress / Strain or Force / Area
So the stress would be the force acting on some particular area: in the case of a wire the area is merely the area of the wire where the force is applied.
So maybe, they mean that stress would be an increase in blood pressure or some other physiological reaction due to an externally applied force.
A coil with 25 turns of wire is moving in a uniform magnetic field of 1.5 T. The magnetic field is perpendicular to the plane of the coil. The coil has a crosssectional area of 0.80 m2
. The coil exits the field in 1.0 s.
Find the induced emf.
Given that,
Number of turns, N = 25
Magnetic field, B = 1.5 T
The coil has a crosssectional area of 0.80 m2
The coil exits the field in 1.0 s.
To find,
Induced emf in the coil.
Solution,
The induced emf in the coil is given by :
[tex]\epsilon=\dfrac{-d\phi}{dt}\\\\=\dfrac{dB}{dt}\\\\=\dfrac{NBA}{t}\\\\=\dfrac{25\times 1.5\times 0.8}{1}\\\\=30\ V[/tex]
So, the induced emf in the coil is 30 V.
No work is done by an object at rest because.
1) no force is acting on the object.
2) no distance is moved.
3) heat is not produced.
4) friction is acting on the object
Answer:
no distance is moved as w=f×d
What causes the different colors of visible light in the electromagnetic spectrum?
Answer:
The color of the light is determined by the frequency of the light wave. Red, is lowest, frequency and violet is the highest.
The wavelengths of visible light split into the rainbow's hues as it passes through a prism because each color has a unique wavelength.
What is the electromagnetic spectrum?The range of all EM radiation types is known as the electromagnetic (EM) spectrum. The light source from a bulb in your home and electromagnetic frequency from a radio station are two examples of electromagnetic radiation. Radiation refers to the energy that moves and disperses as it does.
The wavelength of visible light affects its color. These lengths span the spectrum, from 700 nm at the red end to 400 nm at the violet. The only electromagnetic fields that we can perceive are visible light waves. These waves represent the rainbow's colors to us.
The wavelengths divide into the rainbow's hues as the whole visible light spectrum passes through a prism because each color has a unique wavelength.
More about the electromagnetic spectrum link is given below.
https://brainly.com/question/23727978
#SPJ6
Estimate the volume of a typical home (2420 ft^2 in size and 10 ft tall) Answer in units of m^3
Answer:
volume = 683.53 [tex]m^{3}[/tex]
Explanation:
From the given question,
area = 2420 [tex]ft^{2}[/tex]
height = 10 ft = 3.048 m
But,
1 [tex]ft^{2}[/tex] = 0.092903 [tex]m^{2}[/tex]
So that,
2420 [tex]ft^{2}[/tex] = 224.8254 [tex]m^{2}[/tex]
Volume = area x distance
= 224.8254 x 3.048
= 683.5262
volume = 683.53 [tex]m^{3}[/tex]
the total positive charge is QQQ = 1.62×10−6 CC , what is the magnitude of the electric field caused by this charge at point P, a distance ddd = 1.53 mm from the charge
Answer:
6.1 × 10^9 Nm-1
Explanation:
The electric field is given by
E= Kq/d^2
Where;
K= Coulombs constant = 9.0 × 10^9 C
q = magnitude of charge = 1.62×10−6 C
d = distance of separation = 1.53 mm = 1.55 × 10^-3 m
E= 9.0 × 10^9 × 1.62×10−6/(1.55 × 10^-3 )^2
E= 14.58 × 10^3/2.4 × 10^-6
E= 6.1 × 10^9 Nm-1
Running at 2.0 m/s, Burce, the 45.0 kg quarterback, collides with Max, the 90.0 kg tackle, who is traveling at 7.0 m/s in the other direction. Upon collision, Max continues to travel forward at 1.0 m/s. Draw or describe simply the diagram before and after collision including objects, mass, velocity, and velocity vectors.
Answer:
max
Explanation:
because its right 90/7
a device that consist audio information in electrical signal is
Answer:
Electromechanical transducer,
Explanation:
this is the answer I hope u got it
Answer:
yes it is a correct answer
Which of the following remains constant during the motion of a projectile fired from a planet?
A. Momentum
B. Kinetic energy
C. Horizontal component of velocity
D. Vertical component of velocity
Answer:
C. Horizontal component of velocity
Explanation:
Object in motion stays in motion,
nothing works against its motion in the horizontal direction, unlike in the vertical direction, gravity pulls object down.
A naked, male corpse was found at 8AM on Tuesday, July 9.The air temperature wasalready 26.7˚C (81˚F). The body exhibited some stiffness in the face and eyelids and had a body temperature of 34.4˚C (93.9˚F). Livor mortis was not evident. Approximately how long ago did the man die? Justify your answer. Would clothing on the body have made a difference in determining the actual time of death in this case? Why or why not?
Answer:
x = 9.87 hours ago.
Further explanation is present below.
Explanation:
Data given:
Air Temperature = 26.7°C (81°F)
Body temperature = 34.4°C (93.9°F)
We are given that, Livor mortis was absent. Secondly, The body exhibited some stiffness in the face and eyelids.
So, it can be concluded that, body must have died recently, as Livor mortis was absent plus the presence of stiffness in the face and eyelids. Furthermore,
The normal body temperature = 37°C
Body temperature in our case = 34.4° C
Difference = 37 -34.4 = 2.6°C
And Air temperature = 26.7°C
Which is a very low difference, in addition, it has not acquired the air temperature so, all this evidence certifies that body died recently.
Now, we have to calculate, how recently it died.
Formula:
0.78 . x = difference of body temperature and air temperature
Where, x = number of hours = time required,
0.78 . x = (34.4 - 26.7)
0.78 . x = 7.7
x = 7.7/0.78
x = 9.87 hours ago.
It means that, naked male corpse was died 9.87 hours ago.
Now, we are asked to find out clothing on the body had made a difference or not.
So, Yes it would definitely make a difference. As body would have more warmer than being naked. and it would result in a calculation of a different time of death. (body temperature would have > 34.4°C)
A car has a mass of 1,000 kilograms. The weight of the car is
newtons. Use g = 9.8 N/kg for gravity.
Answer : The weight of the car is 9800 N
Explanation :
It is given that,
The mass of the car, m = 1000 kg
We have to find the weight of the car. The weight of an object is defined as the force acting on it under the action of gravity. The mass of an object is the amount of matter present in it.
Using second law of motion :
W = m g
Where
m is the mass of the car
g is the acceleration due to gravity g = 9.8 N/kg
W = 1000 kg × 9.8 N/kg
W = 9800 N
So, the weight of the car is 9800 N.
Hence, this is the required solution.
Answer: The weight of the car in newtons is 9800N/kg
Explanation:
Find the inequality represented in the graph
Answer:
8
10th classpepar2021
Answer:
y ≤ 1x-1
Explanation:
line is not dotted = ___ than or equal to
shaded area below line = less than
so: ≤
--
y=mx+b
y intercept -1 (line intersects y line on -1)
y=mx-1
points (1,0) (0, -1)
find slope
---
in conclusion, y ≤ 1x - 1
hope this helped ya :-)
what heavy element was the chernobyl nuclear accelarators supposed to make?
Answer
plutonium
Explanation:
brainliest please
A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.0 cm wide and 5.00 m long. Between the sheets is a mica strip of the same width and length that is 0.0225 mm thick. What is the maximum charge?
This question is incomplete, the complete question is;
A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.0 cm wide and 5.00 m long. Between the sheets is a mica strip of the same width and length that is 0.0225 mm thick. What is the maximum charge?
(The dielectric constant of mica is 5.4, and its dielectric strength is 1.00×10⁸ V/m)
Answer: the maximum charge q is 716.85 μF
Explanation:
Given data;
with = 3.0 cm = 0.03
breathe = 5.0 m
Area = 0.03 × 5 = 0.15 m²
dielectric strength E = 1.00 × 10⁸
∈₀ = 8.85 × 10⁻¹²
constant K = 5.4
maximum charge = ?
the capacitor C = KA∈₀ / d
q = cv so c = q/v
now
q/v = KA∈₀ / d
q = vKA∈₀/d = EKA∈₀
we substitute
q = (1.00 × 10⁸) × 5.4 × 0.15 × 8.85 × 10⁻¹²
q = 716.85 × 10⁻⁶ F
q = 716.85 μF
the maximum charge q is 716.85 μF
= 16ou kg x 9.8/m 15 xrom
7.ů5 X 105 Ek gained = 7.05x10
5. Calculate the 'efficiency of the roller coaster if the vertical height of the rollercoaster at point B is 90.0 m, the mass of the coaster is 1600 kg and the velocity the coaster at point Fis 37.0 m/s
Answer:
efficiency can be expressed in terms of power.
If so, power=force*velocity
P= (mass×gravity)*velocity
p= 1600×9.81×37
p=580752
2)To reach an absolute pressure of 3atm, you must dive down (in water) to depth of approximately 20m.Why might someone think that the answer was 30m
Answer:
Someone might think the answer is 30 m when the person cannot distinguish between absolute pressure and gauge pressure.
Explanation:
Given absolute pressure at a depth of 20 m = 3 atm.
When you drive down 30 m in water, the gauge pressure experienced is calculated as;
P = ρgh
Where;
ρ is density of water = 1000 kg/m³
g is acceleration due to gravity, = 9.8 m/s²
h is the depth of water = 30 m
P = (1000)(9.8)(30)
P = 294000 Pa
in atm = [tex]\frac{294000}{101325} = 2.9 \ atm[/tex] ≅ 3 atm.
Thus, someone might think the answer is 30 m when the person cannot distinguish between absolute pressure and gauge pressure.
Someone might think the height (depth) is 30 meters, if he or she is unable to distinguish between gauge pressure and absolute pressure.
Given the following data:
Atmospheric pressure A = 3 atm.Height (depth) A = 20 meters.Height (depth) B = 30 meters.Scientific data:
Acceleration due to gravity = 9.8 [tex]m/s^2[/tex]Density of water = 1000 [tex]kg/m^3[/tex]To calculate the gauge pressure at a depth below the surface of a water:
Mathematically, gauge pressure is given by this formula:
[tex]P = \rho gh[/tex]
Where:
g is the acceleration due to gravity.h is the height (depth) of water.Substituting the given parameters into the formula, we have;
[tex]P = 1000 \times 9.8 \times 30[/tex]
Gauge pressure = 294000 Pa
Next, we would convert the value in Pascals to atmosphere.
Conversion:
1 atm = 101325 Pa
X atm = 294000 Pa
Cross-multiplying, we have:
[tex]X = \frac{294000}{101325}[/tex]
X = 2.90 ≈ 3.0 atm.
Read more on absolute pressure here: https://brainly.com/question/10013312
A hockey player applies an average force of 80.0 N to a
0.25 kg hockey puck for 0.10 s. What is the impulse
experienced by the hockey puck ?
Answer:
[tex]Impulse = 8.0Ns[/tex]
Explanation:
Given
[tex]Force = 80.0N[/tex]
[tex]Mass = 0.25kg[/tex]
[tex]Time = 0.10s[/tex]
Required
Determine the impulse
The impulse is calculated as follows:
[tex]Impulse = Force * Time[/tex]
Substitute values for Force and Time
[tex]Impulse = 80.0N * 0.10s[/tex]
[tex]Impulse = 8.0Ns[/tex]
Hence, the impulse experienced is 8.0Ns
Assume that John Travoltage and the carpet are neutral to start. After he rubbed his foot on the carpet on took negatives, what charge is on the carpet and why
Answer:
Same charge, positive.
Please see below as the answer is self-explanatory.
Explanation:
Due to the principle of conservation of the charge, if both the man and the carpet were neutral to start, any negative charge transferred to the man by the carpet, must have its positive counterpart on the carpet, so the system man + carpet can keep neutral as required by this principle, due charge can't neither created nor destroyed.Which three statements about electrical circuits are true?
A.
They provide a way of transferring electrical energy.
B.
They cause electrons to flow downhill.
C.
When closed, they allow electrons to flow in a loop.
D.
They allow electrons to flow toward a positively charged area.
Answer:
A.
Explanation:
which quantity is a vector quantity?
At a depth of 1030 m in Lake Baikal (a fresh water lake in Siberia), the pressure has increased by 100 atmospheres (to about 107 N/m2). By what volume has 1.0 m3 of water from the surface of the lake been compressed if it is forced down to this depth
Answer:
the volume that has 1.0m^2 of water from the surface of the lake is 4.3
Explanation:
The computation of the volume is as follows;
The Bulk modulus is
= K = 2.3 × 10^9 Pa
K = - V dP ÷ dV
dV = - V dP ÷ K
dV = - (1 × 101.3 × 1000) ÷ 2.3 × 10^9
= - 4.3 × 10^-3 m^3
So the volume that has 1.0m^2 of water from the surface of the lake is 4.3
Hence the same is relevant and considered
The current shape of the solar system is *
1. A spiral or flat swirling disk with the Sun in the center
2. A spherical, with the objects in the solar system orbiting the sun in all directions
3, There is not logical order or shape in our solar system
4. A flat swirling disk with the Earth in the center
Which best describes pitch?
A) the amount of time taken for a longitudinal wave to produce one cycle
B) the number of cycles per second perceived by the human ear
C) the amplitude of a wave when the natural frequency is matched
D) the distance between two corresponding parts of a transverse wave
Answer:
B) the number of cycles per second perceived by the human ear
Explanation:
The best expression that describes pitch is that it is the number of cycles per second perceived by the human ear.
For a wave train, the number of cycles per second is frequency. Whereas the period is the amount of time taken for a longitudinal wave to produce one cycle.
The distance between two corresponding parts of a transverse wave is its wavelength.
A high pitch will correspond to a high frequency of waves perceived. A low pitch corresponds to a low frequency of waves.A toy car attached to a rope is traveling around in a circle. It makes 4 laps in 12s.What is the angular velocity of the toy car?
Answer:
2.09 rad/s
Explanation:
Given that,
A toy car makes 4 laps in 12 s.
We need to find the angular velocity of the toy car. We need to find the angular velocity of the toy car.
4 laps = 25.13 rad
So,
[tex]v=\dfrac{25.13\ rad}{12\ s}\\\\v=2.09\ rad/s[/tex]
So, the angular velocity of the toy car is 2.09 rad/s.