A sled is moving at a constant speed down a surface inclined at 45 degrees with the horizontal and travels 30meter in 4 seconds. calculate the vertical velocity of the self at the end of 4 seconds

What word describes the forces acting on the car

A 24-gauge copper wire has a diameter of 0.51 mm and is used to connect a speaker to an amplifier. The speaker is located 7 m away from the amplifier.

Producing a current by moving a wire through a magnetic field is called induction.

The energy that is produced by the Sun is made by A) fusion. B) fission. C) friction. D) burning fuels.

The total momentum of a group of objects is conserved unless

A solar eclipse occurs when positions of the sun, moon, and earth are such that one of these objects is between the other two. during a solar eclipse, which object is between the other two? a. sun c. earth b. moon d. none of the above

One tuning fork vibrates at 440 Hz, while a second tuning fork vibrates at an unknown frequency. When both tuning forks are sounded simultaneously, you hear a tone that rises and falls three times per second.

A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 2.0 cm. What will be the compression if the same block collides with the spring at a speed of 2v?

How does work get affected when a object is lifted up instead of using a ramp

Choose the correct statement. a. Usually, when one form of energy is converted to another, no energy is wasted. b. The total amount of energy in the universe is gradually decreasing. c. This statement illustrates the first law of thermodynamics. d.