A couch is pushed with a horizontal force of 80 N and moves the couch a

distance of 5 m across the floor. How much work is done on the couch?

How much ice can you meltheat with 1000 calories of heat?

The atmosphere is made up of several layers of air. The bottom two layers are the troposphere and the stratosphere. How does the troposphere differ from the stratosphere? A. The troposphere is much warmer than the stratosphere. B.

Before radiant energy can be converted to thermal energy, it must be changed to what

A hard material is easily scratched. True False

What is the speed of a proton that has been accelerated from rest through a potential difference of - 1300 v?

On a weather map places that have the same temperature are joined with lines called

Which of the following generally speed up a reaction? A. increasing the activation energy B. removing any catalysts C. adding more heat D. shaking the container holding the reaction

Cual es el peso de 5L de un fluido que tiene una densidad 3.5 veces mayor que la del agua?

A flask containing neon gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where the prevailing pressure is 745 torr. The mercury level in the open arm is 50.

1. f= 2. v= 3. 2 = 4. T= 8 m/s 8 sec 8 Hz 8 m Match the letters with the measurements