Which element makes up earth's atmosphere?

a. hydrogen

b. carbon

c. oxygen

d. nitrogen

Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a wrench from 3.00 m above the ground and measure that it hits the ground 0.

How does the size of the sun compare to the sizes of other stars?

A car slows down at - 5.00 m/s^2 until it comes to a stop after travelling 15.0 m. How much time did it take to stop?

What is the net force when a pair of balanced forces acts on an object?

A powered winch is used to pull a sailboat to shore. The winch uses a 900 W motor. If the motor is used for 30 s, how much work does it do? (Power: P = W/t) 0.03 J 30 J 960 J 27,000 J

A less-massive object is moving in the same direction as a more-massive object, but with a higher speed. They experience an inelastic collision. Describe the speed of the more-massive object after the collision.

At a given location in space, the magnetic field in an electromagnetic wave is increasing. How is the electric field changing at that same location? a. The electric field is increasing. b. The electric field is decreasing. c.

What determines the properties of an object

If you hit a wall, will the force that you exert on the wall be greater than, or less than, or equal to the force that the wall exerts on you. Explain your answer.

Which waves can u see