Before beginning an experiment, Mrs. Wilson warns her science class not to drop the bar magnets on the floor. What is the most likely reason for Mrs. Wilson's warning?

What was the belief about earth's crust and landforms before the theory of plate tectonics?

Recall that the volume V of a sphere of radius r can be computed using the formula. If the radius of a spherical balloon is increasing at a rate of 5 cm/min, how fast is its volume increasing when the radius is 10 cm?

What controls the flow of electrons in a circuit?

In the presence of a dielectric, the capacitance of a electric field inside the plates now is: a) Less b) More c) Same as the electric field in absence of the dielectric d) Zero

How much work is done on an object if 10 newtons of force are applied to the object and it moves 2 meters? A. 0.2 J B. 5 J C. 8 J D. 20 J

Describe and apply Newton's Three Laws

If you do 1000j of work on a system and remove 500j of heat from it, what is the change in its internal energy

Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is 4.5 m long, its mass is 0.42 kg, and the force exerted on it by the children is 71 N.

An object will only change its motion if a force is directly applied to it. is this a true statement?

Janice has just measured the density of an object. Which value is possible? (Density: D = )