Mechanical waves form when a source of energy causes a medium to compress.

a. True

b. False

8. The velocity of a car reduces from 30 km/h to 5 km/h as the car approaches a stop sign. This is an example of (positive / negative) acceleration. (circle the correct answer from the parenthesis)

What is limiting friction

A 51-kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37.0° above the horizontal. If the tension in the rope is 115 N, how much work is done on the crate to move it 7.0 m?

For work to be done on the object the object has to

A G note has a frequency of 783.99 Hz. Calculate its wavelength in meters.

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?