If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is

A. mg/2

B. mg

C. 2mg

D. 4mg

Ball A has mass 5.0 kg and is moving at - 3.2 m/s when it strikes stationary ball B, which has mass 3.9 kg, in a head-on collision. If the collision is completely inelastic, what is the common velocity of balls A and B?

Which are examples of resonance? Check all that apply. the volume on a stereo being turned up a note being played on a saxophone an opera singer breaking a glass with her voice a person pushing a swing at the rate it naturally oscillates back and

Two skaters collide and grab on to each other on frictionless ice. One of them, of mass 77.0 kg, is moving to the right at 4.00 m/s, while the other, of mass 66.0 kg, is moving to the left at 2.50 m/s.

Why dose the weight of an object change with increasing elevation on earth

The heat added to a thermodynamic system minus the work done is equal to which of the following? A. the heat lost from the system B. the internal energy C. the total heat added to the system D. the Carnot efficiency of the system E.

Mechanical weathering blank

A 0.40-kg cart with charge 4.0 x 10-5 C starts at rest on a horizontal frictionless surface 0.50 m from a fixed object with charge 2.0 x 10-4 C. When the cart is released, it moves away from the fixed object.

The fact that the sun rises and sets at different times during the day depending on the time of year is an example of a data trend. True or False

Which option most likely describes scientist (s) working in pure science? A quality assurance inspector examining the contents of large tanks used to make fermented products.

What type of organisms are made up of a cell that does NOT contain a nucleus? A.) fungi B.) protist C.) animals D.) bacteria