Which factors affect friction between two solid surfaces?

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?

Aluminum has 13 energy levels. How many electrons are found in the outermost energy level for this atom? Which energy level is the outermost?

To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole. A steel rivet 1.870 cm in diameter is to be placed in a hole 1.

A runner with a mass of 75kg runs 6m/s calculate the kinetic energy stored in the runner

Which of the following statements are true about gravity? Check all that apply. A. Gravity doesn't exist between two stars that are far far away from each other. B. Gravity exists only near Earth. C.

If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy (me) does it possess?

Which statement describes static equilibrium? A. The forces on an object are unbalanced. B. An object has balanced forces acting on it and constant velocity. c. The forces on an object are balanced and there is no motion. D.

What is the rate at which work is done in lifting a 35 kg object vertically at a constant speed of 5 m/s? 1 1700 W 2 340 W 3 180 W 4 7.0 W

The owner of a window treatment company wants to design Shades that will cover the windows of the house.

What direction of magnetic field lines inside my magnet