What is the approximate weight of a 20-kg cannonball on earth?

a. 2 n

b. 20 n

c. 200 n

d. 2000 n?

In transverse waves, the medium : Group of answer choices vibrates in a direction perpendicular to the direction of motion of the wave. doesn't vibrate; the disturbance just moves through the medium. vibrates in the same direction the wave is moving.

Paul is driving his car on a sunny afternoon. Which glasses should he ideally wear while driving

You have just installed a new sound card in your system, and Windows says the card installed with no errors. When you plug up the speakers and try to play a music CD, you hear no sound. What is the first thing you should do? The second thing? a.

The temperature of a system drops by 30°F during a cooling process. Express this drop in temperature in K, R, and °C.

The energy obtained by an object when it gains or loses electrons is what?

Most of an atom is empty space. a. True b. False

Two ice skaters, Skater X and Skater Y, are at rest on a horizontal surface made of ice. The friction between the ice and the skaters is negligible.

Hiker goes distance of 4km east start time 9:00am end time 9:45am. what was hike rs velocity

A hot saucepan is placed on a cold bench. Heat will flow from the saucepan to the bench until ... A. the bench is as hot as the saucepan was. B. the saucepan and bench are at the same temperature. C. the saucepan has lost all of its heat. D.

Temperature measures: a. the kinetic energy of the random motion of molecules in an object. b. the kinetic energy of the average motion of molecules in an object. c. the potential energy of an object. d. the motion of an object.