Un libro del peso di 12 N è in equilibrio su un tavolo. Sapendo che il coefficiente di attrito statico vale 0,5, la forza di attrito quanto vale?

Retrieving information is the same as intentional learning. True False

When should you use a piece of pipe as a leverage extension on the handle on a wrench? a. As necessary to increase torque to loosen a stuck bolt or nut. b. Only on approved torque multiplying wrenches. c.

Which term below describes a measurement of how hard an object pushes against a surface? A. Heat B. Density C. Temperature D. Pressure

What will not affect strength of a electromagnet?

The bending of waves due to a change in speed is called a. reflection. b. refraction. c. diffraction. d. interference.

Mechanical work is done an object when a force displaces the object in the direction of the force or a component of the force. True or false?

Electric current can best be induced in a wire by a. stretching the wire. b. moving a magnet up and down near the wire. c. setting the wire near a magnet. d. rotating the wire. E. none of the above

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon

Which of these describes how heat is transferred by radiation? A.) Warm air rises and takes heat with it; eventually it cools and sinks. B.) Sunlight travels through space without the aid of fluids or solids. C.

A body is moving with a velocity of 12m/s and it comes to rest in 2 minutes, what was the acceleration?