Mixtures are separated in a centrifuge
according to their densities
Greater speed and mass require
greater centripetal force
Traveling in a circular path with a smaller radius of curvature requires
a greater centripetal force
The velocity of the object after 4.0 seconds is 8.0 m/s
Explanation:
The motion of the object is a uniformly accelerated motion (constant acceleration), therefore we can use the following suvat equation:
where
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time
For the object in this problem, we have:
u = 0 (it starts from rest)
is the acceleration
t = 4.0 s is the time elapsed
Solving for v, we find the final velocity:
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If you soak this egg shell in vinegar (which is about 4% acetic acid), you start a chemical reaction that dissolves the calcium carbonate shell. The acetic acid reacts with the calcium carbonate in the egg shell and releases carbon dioxide gas that you see as bubbles on the shell.
(A) -10m/s^2
(B) the average acceleration in the specified time in interval Δt = tb - ta =2.0sis
The rate at which the velocity changes is referred to as average acceleration. To determine the average acceleration of something, we divide the change in velocity by the amount of time that has passed.
For instance, the average acceleration of a crazy ball would be 20 cm/s/s if its velocity increased from 0 to 60 cm/s in 3 seconds. The marble's velocity will therefore rise by 20 cm/s per second as a result.
As a result, we can see that the definition of average acceleration is the ratio of change in velocity to change in time for a certain interval. The average acceleration is calculated over a given period of time and contrasted with instantaneous acceleration. The final velocity less the starting velocity divided by the total time is the average acceleration.
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Choice (3) would be one of the objects because when its stretching its waiting to release the energy. Then choice (1) would be the other object because when it rolls the energy stored in the ball would be released when stopped. Therefore there storing the energy until released.
