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Questions in physics

[Done] Velocity v. Time The displacement of an object is equal to the area under a velocity-time graph. True or False?

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] Select the best answer for the question. 12. The molecules in a material need to move with more energy for the material to change from a A. gas to a solid. B. liquid to a solid. C. liquid to a gas. D. gas to a liquid.

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] To determine the change in the x-component of the velocity of an object, subtract the x-component of the initial velocity from the x-component of the final velocity. True False

[Done] Describe the four main types of resistance forces.

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] Which object would have the most momentum? A. a 500-pound car moving at 20 miles per hour B. a 200-pound car moving at 60 miles per hour C. a 100-pound car moving at 80 miles per hour D. a 50-pound car moving at 100 miles per hour

[Done] How does increasing the amount of charge on an object affect the electric force it exerts on another charged object? A. The electric force increases because the amount of charge has an indirect relationship to the force. B. The electric force increases because the amount of charge has a direct relationship to the force. C. The electric force decreases because the amount of charge has an indirect relationship to the force. D. The electric force decreases because the amount of charge has a direct relationship to the force.