True or false:

in a compressional wave the matter in the medium moves back and forth at right angles to the direction that the waves travel.

If the weight of an object is greater than the weight of the water that it displaces, which is true? 1. the object will float because the gravitational force is greater than the buoyant force. 2.

A gram molecule of a gas at 127 ° expands isothermally until its volume id doubled. find the amount of work done and heat absorbed

He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the table by moving the magnet. This demonstrates that A. gravitational forces are contact forces. B.

The cable is drawn into the motor with an acceleration of 7 m/s2 determine the time needed for the load at b to attain a speed of 10 m/s, starting from rest.

As a substance is changing from a liquid to a gas, the distance between its molecules A. increases, and the temperature of the system remains the same. B. increases, and the temperature of the system decreases. C.

If 2 grams of element X combine with 4 grams of element Y to form compound XY, how many grams of element Y would combine with 46 grams of X to form the same compound?

How do positive and negative charges interact with each other?

What is electricity

What happens to the density as one progresses through the layers of the earth from the lithosphere toward the inner core

What is tiny holes on the surface of a plant?