You use a pulley system to lift a fallen tree. You apply a force of 50 N and the pulley pulls on the tree with a force of 1300 N what is the mechanical advantage of the pulley?

A glass of ice at 0°C changes to a glass of water at 0°C. What caused the ice to change to water

the figure shows an initially stationary block of mass m on a floor. A force of magnitude 0.500mg is then applied at upward angle θ = 20∘.

How does a particle of air move as the sound of wave passes

What is the astronaut impact on the future of the united states?

The fm station kdul broadcasts music at 99.1 mhz. find the wavelength of these waves (c = 3.0 * 108m/s).

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?