If the forces acting upon an object are balanced, then an object MUST

A. be beginning to slow down.

B. be accelerating.

C. be moving.

D. be moving at a constant velocity.

What is a material that restricts the flow of electricity or thermal energy

Jupiter takes 9.9259 hours to rotate on its axis and has a tangential speed of 12293 m/s. what is the radius of jupiter?

Which statement best explains why South Carolina temperature is cooler in winter than in summer.

What are the main muscle groups of the thigh?

Two masses, m = 3.31 kg and m = 7.29 kg, are connect by a string of negligible mass. The string passes over a frictionless pulley so that m and m hang down on opposite sides of the pulley. The whole system is released from rest.

David walks 3 km north, and then turns east and walks 4 km

In a Millikan oil-drop experiment, the charges on several different oil drops were as follows: - 5.92; - 4.44; - 2.96; - 8.88. The units are arbitrary.

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is the ball moving faster or slower when the train is moving than when it is standing still?

Determine which factors will increase the reaction rate and which factors will decrease te reaction rate.

Read the paragraph below from the section "An Object At Rest Has Potential Energy Potential energy is the energy an object rgy is the energy an object has because of its position. It is energy that is waiting to be released.