You pick up a 3.3 kg can of paint from the ground and lift it to a height of 1.4 m.
A. How much work do you do on the can of paint?
B. You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do this time?
C. Your friend decides not to use the paint, so you lower it back to the ground. How much work do you do on the can as you lower it?

Describe uniform velocity and variable velocity in short

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.