What does a machine change to make work easier?

What is the role of MnO2 in a dry cell?

7. What determines whether a charged object gains or loses electrons? 8. Which is more likely to generate static electricity-rubbing Teflon and styrene or rubbing styrene and rabbit fur? Explain. 9.

The star Betelgeuse is about 600 light-years away. If it explodes tonight, -we'll know because it will be brighter than the full Moon in the sky. -we'll know because debris from the explosion will rain down on us from space.

An object with a mass of 0.5 kilogram is swung by a string in a horizontal circle of radius 1 meter at a speed of 2 meters per second. as the speed of the object increases, the force needed to keep it in a circular path will

Which projectiles will be visibly affected by air resistance when they fall? Balloon, Leaf, brick or rock?

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