Which is heavier-warm air or cold air?

Pressure and volume changes at a constant temperature can be calculated using a. Boyle s law. c. Kelvin s law. b. Charles s law. d. Dalton s law.

How fast would the moon need to travel in order to escape the gravitational pull of Earth, if Earth has a mass of 5.98 X 1024 kg and the distance from Earth to the moon is 3.84 x 108 m?

a 1500.0 kg car is at rest on a level track. The driver gives the engine gas and the car begins to accelerate forward. The car moves from 0 m/s to 27 m/s in 8 s. What is the acceleration of the car. What is the force of the car moving forward?

The truck is described as travelling at 30mph to the west. The quantity described here is a (n)

A source of wave produces 20 crest sand 20 troughs in 0.4 sec. Find the frequency of the wave.

Woman pulls a 6.87 kg suitcase, initially at rest, with a 29.2 N force along the handle at 57.7º. Friction pulls back at 12.7 N, and the suitcase moves 5.93 m. What is its final speed? (Unit = m/s)

Suppose you know a golf ball's horizontal velocity and the time it has traveled through the air. how could you calculate how far the ball traveled

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m