If the temperature of the air in a certain region is increased by heating from the sun, does the air pressure at the ground increase or decrease?

A 380-g air track cart traveling at 1.25 m/s collides elastically with a 340-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the 340-g cart after the collision?

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m? What is the pebble's speed when it has fallen 29.4 m?

What is the diffrence between a primary wave and a surface wave?

Two vectors A and B have components (0,1) and (-1,3), respectively. What is magnitude of the sum of these two vectors? a) 3.2 b) 4.1 c) 3.9 d) 2.8

Who won the world record for swimming 800 meter Olympic games?

An electric force exists between which pair of objects? Check all that apply. a neutral object and a negative object two negative objects a neutral object and a positive object two positive objects a negative object and a positive object two neutral

What causes the acceleration to increase or decrease?

a glass rod obtains a positive chartge from being rubbed by silk. Is this due to the glass gaining protons, or losing electrons?

A calorimeter contains 195 g of water at 20.4 º C. A 37.8 g sample of an unknown metal is heated to 133 º C and placed into the water in the calorimeter. The final temperature of the metal and the water are 24.6 º C.

What is the acceleration of a 1000kg car subject to a 550N net force?