If the distance between the two charges is doubled, the attraction or repulsion becomes weaker, when the distance between the two charges is halved, the force is increased four times.
What do you mean by force?An object with mass feels a push or pull, which modifies its velocity. An agent with the ability to change a body's resting or moving condition is known as an external force.
Briefing:As stated, the distance between them that is divided in half is equal to r/2.
Let [tex]F_{\prime}[/tex] be the force when the distance is cut in half between the charges.
It is possible to express the force between the two charged particles as
where, q1 and q2 are the charges, r is the distance, is k constant of proportionality(Coulomb's constant), F is the force between the charges.
Calculation of the force at a halving of the distance between the charges
The force is reduced by half when the distance is:
[tex]F=\frac{k q_1 q_2}{r^2}[/tex]
[tex]F \prime=\frac{k q_1 q_2}{\left(\frac{r}{2}\right)^2}[/tex]
[tex]F /=\frac{4 k q_1 q_2}{r^2}[/tex]
[tex]F_{\prime}[/tex] = 4F
As a result, when the space between the two charges is cut in half, the force is multiplied by four.
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onur drops a basketball from a height of 10\,\text{m}10m10, start text, m, end text on mars, where the acceleration due to gravity has a magnitude of 3.7\,\dfrac{\text{m}}{\text{s}^2}3.7 s 2 m 3, point, 7, start fraction, start text, m, end text, divided by, start text, s, end text, squared, end fraction. we want to know how many seconds the basketball is in the air before it hits the ground. which kinematic formula would be most useful to solve for the target unknown?
The time the ball spend on the air before reaching the ground is 2.325 seconds.
The kinematic formula would be most useful to solve for the target unknown is
H = ut + ½gt²
Basket ball is drop from height
H=10m
It is dropped on planet mass
And the acceleration due to gravity on Mars is given as
g= 3.7m/s²
Time taken for the ball to reach the ground
Initial velocity of the body is zero
u=0m/s
Using equation of motion: free fall
H = ut + ½gt²
10 = 0•t + ½ × 3.7 ×t²
10 = 0 + 1.85t²
10 = 1.85t²
Then, t² =10/1.85
t² = 5.405
t = √ 5.405
t = 2.325seconds
So the time the ball spend on the air before reaching the ground is 2.325 seconds.
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Onur drops a basketball from a height of 10 m on Mars, where the acceleration due to gravity has a magnitude of 3.7 m/s². We want to know how many seconds the basketball is in the air before it hits the ground.
Which kinematic formula would be most useful to solve for the target unknown?
Answer: Δy = v0t - ½ at²
If 500j of energy were added to 1kg of each of these samples, which would expiernce the least temperature increase?
If 500J of energy was added to one each sample of Aluminum, Brass, Copper, and Platinum, Aluminum will experience the least temperature increase.
This can be explained with the concept of Specific heat. Specific heat may be defined as the heat required to raise the temperature of a unit mass of a substance by 1°C.
Now the relation between Heat and temperature change can be given by:
Q=mSΔT; where m is the mass of the given substance, S is the specific heat capacity and ΔT is the temperature change.
Since the mass of all the samples is the same and the same amount of energy is added to them then the temperature change is inversely proportional to Specific heat capacity.
ΔT∝1/S
Out of all the samples' given Aluminum has the highest Specific heat.
Thus, the temperature change is least for aluminum.
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Complete Question:
If 500j of energy were added to 1kg of each of these samples of Aluminum, Brass, Copper and Platinum then which would experience the least temperature increase?
Give me 5 examples of High heat vaporization
Answer:
ironing clothes, process of sweating, line drying clothes, melting a glass of ice, drying of wet towels
Explanation:
Answer:
Water is vaporized when it is boiled on the stove to cook some pasta, and much of it forms into a thick steam. Water evaporates – Water evaporates from a puddle or a pool during a hot summer’s day.
Explanation:
hope this helps♡
A satellite is in uniform circular motion around the Moon. What happens to the direction of the acceleration vector during one full orbit?
(1 point)
O The acceleration vector oscillates back and forth.
O The acceleration vector always points inward.
O The acceleration vector always points outward.
O The acceleration vector always points in the direction of motion.
Why it is not appropriate to use a rubber protection on high voltage cables that exceeds a transmission voltage of 120000V
It is not appropriate to use a rubber protection on high voltage cables that exceeds a transmission voltage of 120000V, because the high voltage transmitted in these lines can cause heating effect on the lines which can melt the rubber used to the coat the lines.
What is high voltage transmission?
High voltage transmission lines deliver electricity over long distances
This high voltage transmission lines transmit power at very high voltage.
The high voltage rating of these transmission lines often cause heating effect on the lines or wires.
The heating effect of the transmission lines can melt rubbers, hence it is not advised or required to use a rubber to cover these high transmission lines.
Thus, it is not appropriate to use a rubber protection on high voltage cables that exceeds a transmission voltage of 120000V, because the high voltage transmitted in these lines can cause heating effect on the lines which can melt the rubber used to the coat the lines.
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An car is brought to rest in a distance of 484 m using a constant acceleration of -8.0 m/s2. What was the velocity of the car when the acceleration first began?
The initial velocity of the car was 88m/s
The pace at which an object's direction changes as it is traveling, as observed from a particular viewpoint and as quantified by a certain unit of time, is known as its velocity.
Any object exposed to forces will accelerate. The object's velocity is altered as a result of this acceleration. The speed of the entity prior to the change imposed on by acceleration is therefore known as the initial velocity.
Given:
Final velocity, v = 0m/s
Acceleration, a = -8 [tex]m/s^2[/tex]
Distance covered, d = 484m
To find:
Initial velocity, u = ?
Formula:
[tex]v^2 - u^2 = 2ad[/tex]
Calculations:
Initial velocity, u = [tex]\sqrt{v - 2ad}[/tex]
u = [tex]\sqrt{0 - 2 (8) (484)}[/tex]
u = 88m/s
Result:
The initial velocity of the car was found to be 88m/s.
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the smallest unit of charge is −1.6×10−19 c,−1.6×10−19 c, which is the charge in coulombs of a single electron. robert millikan was able to measure the charge on small droplets of oil by suspending them between a pair of electrically charged plates.
Since an electron cannot be fractionalized, any number that is a multiple of 1.6 is true. Therefore, the appropriate options are -3.2x10-19C, -4.8x10^-19C and -8.0x10-19C.
Why -1.2x10^-19C is not possible?Matter's electric charge is what gives it a force when it's in an electromagnetic field, which is its physical property.
Protons and electrons, which act as charge carriers, frequently carry both positive and negative electric charges. Charges moving around in a system produce energy.
-1.2x10^-19C in choices is incorrect even if it is a multiple of 1.6 since it has a fraction of one electron because its charge is less than that of a single electron.
Consequently, the values of 1.2x10-19, 5.6x10-19, and -9.4x10-19 are wrong because they contain fractions of electrons that are impossible to exist.
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Two gases are contained in gas bulbs connected by a valve. Gas a is present in a 1 liter bulb at a pressure of 818 torr. Gas b exerts a pressure of 328 torr in a 1 liter bulb. The valve is opened and the two gases come to equilibrium. What is the partial pressure of gas a expressed after equilibrium?.
The partial pressure of gas expressed after equilibrium is 409 torr.
Which gas is used for bulbs?Incandescent light bulbs are usually filled with argon, which is a common gas. It prolongs bulb life by keeping the tungsten filaments from decaying too quickly. Lighting also makes use of other gases like helium, neon, nitrogen, and krypton.Incandescent lights are what gas lamps are. They generate heat by burning fuel like propane, white gas, or kerosene, and the heat drives light production from the mantles. The mantles, which are made of a ceramic mesh, contain the lantern's flame.The first kind of gas employed, argon, is a gas that is typically found in incandescent light bulbs. Nitrogen may occasionally be added to argon gas. Halogen or xenon gas can be found in some light bulbs. Some light bulbs also include krypton gas.What is the partial pressure of gas expressed after equilibrium:
1. Write out the units given.
V1= 1 L
Ptot= 818 torr
PPB= 328 torr
V2= 1L
2. Remember= PaVa= PtotVtot
3. Add together volumes for total volumes.
1 L + 1 L= 2 liters
4. Plug in values and solve for PP of gas A.
PPA= Ptot x VA/Vtot
818 torr x 1/2 L= 409 torr
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The change in internal energy for a given system is –325 j. The system loses 155 j of energy as heat at the same time that it expands from an initial volume of 15. 0 l at 1. 00 atm of pressure. What is the final volume of the system in liters?.
According to internal energy, the final volume is 19.75 liters.
We need to know about internal energy to solve this problem. For a closed system, with matter transfer excluded, the changes in internal energy are due to heat transfer and due to thermodynamic work done by the system on its surroundings. It can be determined as
ΔU = Q - W
where ΔU is the change in internal energy, Q is heat and W is work done.
From the question above, we know that
ΔU = -325 J
Q = 155 J
Vo = 15 L = 0.015 m³
P = 1 atm = 1.01 x 10⁵ Pa
By substituting the given parameter, we can calculate the work done
ΔU = Q - W
-325 = 155 - W
W = 480 joule
Find the final volume
W = P . (Vi - Vo)
480 = 1.01 x 10⁵ (Vi - 0.015)
Vi = 0.01975 m³
Vi = 19.75 liters
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Haru always wanted to be a marathon runner and he set his first goal to run five miles in 50 minutes, but while he was trying to meet his objective, he
noticed that he is a really fast sprinter and would have greater success in short races. What behavioral trait BEST describes Haru's personality?
Short races trait is the BEST describes Haru's personality . and to run a marathon, you have to run 26.2 miles by foot , it is not easy.
MarathonThe word "marathon" originates in a Greek myth. According to the myth, a gallant soldier sprinted from the Marathon battlefield all the way to Athens, Greece, to inform everyone that the Greeks had defeated the Persians. It is claimed that he covered the entire distance, which is equivalent to a current marathon, without pausing.A marathon requires a lot of effort. It requires perseverance, practice, and hard effort. After all, you must run 26.2 miles on foot to complete a marathon! Consider it like this: 26.2 miles is equivalent to more than 460 times around a football field.To learn more about Marathon refer:
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How might a servant leaders gender, age, or ethnicity influence how he or she is perceived by followers?
Answer:
Servant leaders use persuasion – rather than their authority – to encourage people to take action. They also aim to build consensus in groups , so that everyone supports decisions. There are many tools and models that you can use to be more persuasive, without damaging relationships or taking advantage of others.
Explanation:
A cannonball is shot from level ground with a velocity of 240.0 m/s at an angle of 32 degrees. How long does the ball take to hit the ground?
The time of flight is obtained as 25.9 seconds
What is the time of flight?The time of flight is the time taken to move the object that have been projected along the parabolic path. In this case, we have a cannonball that have been fired from level ground with a velocity of 240.0 m/s at an angle of 32 degrees.
We know that from the question
T = 2usinθ/g
T = time of flight
u = initial velocity
θ = angle of projection
g = acceleration
T = 2 * 240.0 m/s * sin 32 degrees/9.8 m/s^2
T = 25.9 seconds
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The gray cube has a density of 4.5 g/cm3. the density of the green cube is _________ that of the gray cube?
The density of the green cube is higher than the density of the gray cube.
What is density?Density can be defined as a ratio of mass to the volume of a physical object such as a metal, gray cube, or tennis ball. Mathematically, the density of a gray cube can be calculated by using this formula:
Density = M/V
Where:
M represents the mass of a physical object.V represents the volume of a physical object.By critically observing the image (see attachment) of these cubes on the scale, we can reasonably and logically deduce that the green cube has a larger mass than the gray cube on the scale, which ultimately implies that its density (mass/volume) ratio is higher.
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Complete Question:
The gray cube has a density of 4.5 g/cm³. Is the density of the green cube the same, lower than, or higher than that of the gray cube? (2.7)
There are different colors of visible light because
Answer:
he wavelengths separate into the colors of the rainbow because each color is a different wavelength. Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength,
hop this helps
We see different wavelengths of light as different colors because they are associated to different wavelength, which activates different cells in the retina.
There is a car traveling 36 Km/h to the west. The concert is 12Km away. How 1 point
long would it take them to get there?
Is this a SPEED or VELOCITY problem?
The Time to get there is 3 hours
The Speed(s) of a car traveling is = 36 km/h west
Distance(d) to the concert is = 12km
Time to get there = t hours
The formulae used are
Speed(s) = Distance(d) / Time(t)
⇒Time(t) = Distance(d) / Speed(s)
⇒ t = 36 / 12
⇒ 3 hours
Hence, the time for the car to get to the concert with a speed of 36km/hr was 3 hours. This is a VELOCITY problem because it involves direction too along with the speed of the car.
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What solution has a pH is closest to neutral?
Hand soap
Chicken soup
Milk
Saliva
Answer:
Saliva
Explanation:
Bob and carol are both observing the moon at exactly the same time. However, bob is in miami and carol is in los angeles. Bob observes the moon in the first quarter phase. In what phase will carol observe the moon to be?.
Bob and Carol are both observing the moon at exactly the same time. However, bob is in Miami and carol is in Los Angeles. Bob observes the moon in the first quarter phase. Carl will also observe the moon in the first quarter phase.
The moon cycle consists of four primary and secondary phases.
The four primary phases are New Moon, First Quarter, Full Moon, and the Last Quarter.
However, people living in different hemispheres see the contemporary phase of the moon from different angles.
The secondary phases of the moon are waxing crescent, waxing gibbous, waning gibbous, and waning crescent.
If a person travels from the southern hemisphere to the northern hemisphere, he will see that the moon is in the same phase as it was at home.
Thus Bob and Carol, living in different cities, will also observe the moon in the same phase i.e. the first quarter phase.
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a cannonball is shot from a cannon at a launch angle of 63 degrees and an initial velocity of 147 m/s what is the horizontal component of this initial velocity?
The horizontal component of this initial velocity is 26.8 sec
Vy = V sin theta = 147 * sin 63 = 131 m/s
Time to reach zero vertical speed tu= 131 m/s / 9.8 m/s^2 = 13.4 sec
Time for the ball to fall to the original speed
td = 131 m/s 9.8 m/s^2 = 13.4 sec
Total time in air = tu + td = 13.4 s + 13.4 s = 26.8 s
Or 2 * sin 63 * 147 / 9.8 = 26.7 sec
The pace at which an object travels a distance is known as speed, and it is a scalar quantity. The distance (a scalar quantity) per time ratio is the average speed. Speed disregards direction. The instantaneous speed is the upper limit of the average speed as the duration of the time interval approaches zero. The average speed of an item in a period of time is the distance traveled by the object divided by the duration of the period. The meter per second (m/s), the SI unit of speed
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a plane accelerates from rest at a constant rate of along a runway that is long. assume that the plane reaches the required takeoff velocity at the end of the runway. what is the time needed to take off?
The time required to take off is 26.84 s
SOLVING THE EQUATION :
First of all, we can find the velocity at which the plane takes off, using the equation :
v ²-- u² = 2ad
where
v is the take-off velocity
u = 0 is the initial velocity
a is the acceleration
d = 1800 m is the distance covered
Solving for v,
v = √2ad
= √2(5)(1800)
= 134.3 m/s
The time needed to reach this velocity can be found by using
v = u+at
And solving for t,
[tex]t = \frac{v-u}{a} \\\\ = \frac{134.2-0}{5}[/tex]
= 26.84 s
Time needed to take off is = 26.84 s
Kinematics Problems:An interesting scenario when describing the kinematic of a body (or system of bodies) is its motion under constant acceleration. Quantitative calculations for this type of motion require the use of kinematic equations, which relate the quantities that describe the motion of the body. the acceptable kinematic equation to be used depends on whatever motion quantities are given in the problem
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A reconnaissance
plane flies 584 km away
from its base at 940 m/s, then flies back to its
base at 1410 m/s.
What is its average speed?
Answer in units of m/s.
The average speed of the plane is 1128m/s.
The entire distance covered by the object in a specific amount of time is its average speed. Average speed exists as a scalar quantity. The magnitude serves as its representation, and it lacks direction.
Given:
Distance one way = 584km
Speed from its base = 940m/s
Speed back to base = 1410m/s
To find:
Average speed, Avg = ?
Formula:
Avg = total distance / total time
Calculations:
Total distance = 584 + 584 = 1168km = 1168000m
Total time = (584000/940) + (584000/1410)
Avg = 1168000 / [(584000/940) + (584000/1410)]
Avg = (2 x 940 x 1410) / (1410 + 940)
Avg = 2650800 / 2350
Avg = 1128m/s
Result:
The average speed of the plane is found to be 1128m/s.
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A gamma ray of wavelength 1. 00 × 10–8 cm has enough energy to remove an electron from a hydrogen atom. True or false?.
A gamma ray of wavelength 1. 00 × 10–8 cm has enough energy to remove an electron from a hydrogen atom - True.
What are gamma rays?The electromagnetic radiation with the highest energy and shortest wavelength is called a gamma ray.
Since gamma-ray photons have energy greater than tens of millions of electron volts, their wavelengths are often smaller than a few tenths of an angstrom (1010 meter).
The disintegration of an atomic nucleus produces gamma rays, an ionizing form of electromagnetic radiation.
Gamma rays have such a strong penetrating force that they may need to be stopped by several inches of a thick substance, such as lead, or even by several feet of concrete.
Gamma-ray examples include lightning, nuclear explosions, and radioactive decay of naturally occurring radionuclides.
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PLS HELP!! WILL MARK BRAINLIEST
In 3-5 sentences, summarize the balanced forces that are present when a soccer ball is resting on the ground, and the unbalanced forces that are present when a soccer ball is kicked and moves through the air or rolls on the ground.
When the ball is kicked, there is now an unbalanced force that acts on the ball thereby impacting an acceleration.
What are unbalanced forces?We know that according to Newton's laws, an object would remain in its state of rest or a state of uniform motion unless it is acted upon by an external force. This is also known as the law of inertia.
As the ball is kept on the ground, there are two forces that act on the ball;
1) The weight of the ball that act downwards
2) The reaction force on the ball that acts upwards
The two forces are balanced hence the ball remains on the ground.
When the ball is kicked, there is now an unbalanced force that acts on the ball thereby impacting an acceleration.
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Answer:
When the ball is kicked, there is now an unbalanced force that acts on the ball thereby impacting an acceleration.
Explanation:
What are unbalanced forces?
We know that according to Newton's laws, an object would remain in its state of rest or a state of uniform motion unless it is acted upon by an external force. This is also known as the law of inertia.
As the ball is kept on the ground, there are two forces that act on the ball;
1) The weight of the ball that act downwards
2) The reaction force on the ball that acts upwards
The two forces are balanced hence the ball remains on the ground.
When the ball is kicked, there is now an unbalanced force that acts on the ball thereby impacting an acceleration.
How can you solve for m,meaning you have to isolate m?
Here in this question, the formula used is of The Simple Harmonic Motion.
Simple harmonic motion is the motion of a particle traveling in a straight line with an acceleration that is always directed toward the single point directly and whose value is related to the distance from the fixed point. Simple harmonic motion is a type of periodic motion. While basic harmonic motion is an oversimplification, it is nevertheless an excellent approximation. Simple harmonic motion is useful in research because it may be used to describe oscillations in wind generators and vibrations in automotive suspensions. A form of oscillating motion is simple harmonic motion. It is used to simulate numerous real-world scenarios in which a mass vibrates about an equilibrium position. A mass on the spring is one example of such a circumstance.
T = 2π√(m/k)
T²/4π² = m/k
m = k (T²/4π²)
Hence m is isolated from the question and is written as m = k (T²/4π²).
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There are no dangers when someone is underweight.
True
False
Question 2 (1 point)
Which of the following does NOT make up your body composition?
a
Muscles
b
Bones
c
Stomach Contents
d
Fat
e
Tissues
f
Organs
Question 3 (1 point)
A bathroom scale is the best measure of health.
True
False
Question 4 (1 point)
Which of the following is not true about being underweight?
a
Being underweight can lead to a lack of stored energy.
b
Being underweight can lead to lack of organ protection.
c
Being underweight can lead to infertiility.
d
Being underweight is healthy and there are no health issues.
Question 5 (1 point)
You cannot tell how healthy someone is by how they look on the outside.
True
False
"Representing data is not an important part of scientific investigations." Describe why this statement is incorrect.
The reason why the given statement is incorrect is because representing data is an important part of scientific investigations.
A scientific investigation is a method of finding an answer to a question which no one has ever asked before. It is done using various research methods. For this lot of observations are done and then experiments are conducted.
Since a lot of observations and experiments are done, a lot of data is created. Usually more than one experiment is done, because the first one is most likely to be unsuccessful. But that does not mean that it is a waste. Because the mistakes from the first experiment is corrected / altered in the upcoming ones. Since a lot of experiments are done, keeping data of each experiment to alter data in further experiments is an important part of a scientific investigation.
Therefore, the given statement "Representing data is not an important part of scientific investigations" is incorrect.
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as a traffic light turns green, a waiting car starts with a constant acceleration of 1.99 m/s2 x. at the instant the car begins to accelerate, a truck with a constant velocity of 29.44 m/s x passes in the next lane. how much time does it take for the car to catch up with the truck again?
It will take 29.58s of time to for the car to catch up with the truck again.
What is the the relation between velocity and time?The distance an object travels in a certain length of time is measured as velocity. The link between separation, speed, and time is expressed by the following word equation: Distance traveled divided by journey time equals velocity.
As we know,
distance = velocity × time
Given,
acceleration = 1.99 m/s2
constant velocity = 29.44 m/s
d = v₀ × t + 1/2 × a × t²
for v₀ = 0,
v × t = 1/2 × a × t²
⇒ t = 2v / a
⇒ t = 2 × 29.44 / 1.99
⇒ t = 29.58s
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A 51.0 kg boy is standing near the edge of a raft that is floating in a lake. The boy jumps horizontally off the raft with a velocity
of 3.50 m/s. The raft moves in the opposite direciton with a velocity of -7.70 m/s. What is the mass of the raft? Ignore the
resistance caused by the water on the raft.
The boy jumps horizontally off the raft with a velocity of 3.50 m/s. The raft moves in the opposite direction with a velocity of -7.70 m/s.
What is the difference between Mass and Raft?The Department of Housing and Community Development funds the RAFT Program, which prevents homelessness (DHCD). RAFT offers low-income families who are homeless or in danger of homelessness short-term financial support. This force is 67° north of east and has a magnitude of 15 N. Find the x and y components of the raft's acceleration, ignoring any water resistance. The buoyant force on the raft is equal to the weight of the water displaced according to Archimedes' principle.
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1.
Which of the following numbers has two
significant digits?
A. 0.01
B. 0.010
C. 10
D. 10.00
Answer:The answer is B.
Explanation: the 1 and the 0 are the significant digits in 0.010
Toss a ball upward. What is the change in speed each second
on the way up? On the way down?
Answer:
-9.8m/s force of gravity
Explanation:
If gravity is the only force acting upon the ball, the ball will have a -9.8m/s acceleration.
Answer:
As you throw the ball up into the air, its direction is up, but the speed decreases due to the pull of gravity. The ball slows down, and at the very top of its flight, its velocity at that instant is zero.
On the way down, its speed increases by about 10 m/s each second.
Explanation:
it matter which configuration is used from the standpoint of how much force is conveyed to the indicated ‘ground’? answer yes or no from intuition. (b) find expressions that allow you to compare the power dissipated in the damper for each design. use a value of b for the damper, assuming linear damping
The transverse damper could also be used as a diagnostic tool by . A novel energy dissipation system that can achieve the amplified damping ratio.
What is damping ratio?An influence that reduces or prevents oscillation in an oscillatory system is known as damping. Processes that disperse the energy contained in the oscillation in physical systems lead to damping. Examples include viscous drag in mechanical systems, resistance in electrical oscillators, and absorption and scattering of light in optical oscillators. Viscosity of a liquid can impede an oscillatory system, causing it to slow down.
Other oscillating systems, like those found in biological systems and bicycles (for example, the suspension (mechanics) system), can benefit from damping that is not reliant on energy loss. Contrasted with friction, a dissipative force operating on a system, friction is not to be confused with. Dampening can be brought on by friction or contribute to it.
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