Blog

The outer shell electrons in metals are not tightly bound to the nuclei of their atoms. They are free to roam throughout the material, moving from atom to atom. These materials are good ____.

The bolts on a car wheel require tightening to a torque of 90 N∙m.  If a 30 cm long wrench is used, what is the magnitude of the force required when the force is perpendicular to the wrench?

True or False: The acceleration of gravity experienced by objects located near to (and far from) from the earth depends upon the mass of the object.

A 5.0-kg cart is moving horizontally at 6.0m/s. In order to change its speed to 10.0m/s, the net work done on the cart must be:

A 9000-N automobile is pushed along a level road by four students who apply a total forwardforce of 500 N. Neglecting friction, the acceleration of the automobile is

A crane operator lowers a 16, 000-N steel ball with a downward acceleration of 3m/s2. The tension force of the cable is:

Do 100 J of work in 50 s and your power output is A)

A 0.50 kg mass attached to the end of a string swings in a horizontal  circle (radius = 2.0 m)  at 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?

True or False: Electric forces between two charged objects increase with increasing separation distance.

Wherever the is an action force, there must be a reaction force which