When using a pulley with a mechanical advantage of 1.5, a worker applies 250N to the pulley. The pulley is used to lift a heavy crate. How much force does the pulley apply to the crate

Use hubble's law to determine the distance to a galaxy which is moving away at a velocity of 3,500 km/s. (assume that h = 70 km/s/mpc)

What formula is used to find an objects acceleration

How does centripetal force act on a satellite in orbit? It exerts an unbalanced force on the satellite. It keeps the satellite spinning. It changes the direction of the satellite.

Where did Earth's water come from?, select the two competing scientific theories supported by evidence that explain the formation of the hydrosphere.

A car with mass 450 kg has a kinetic energy of 16,256 J. What is the speed of the car? A. 5.9 m/s B. 1.2 m/s C. 8.5 m/s D. 11.2 m/s

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? 1. location where they are formed 2. time they are formed 3. luminosity they are formed with 4. mass they are formed with 5.

What primarily involves heat transfer by convection?

Each of the following lists two facts. which pair can be used with newton's version of kepler's third law to determine the mass of the sun? each of the following lists two facts.

Which is the temperature at which a solid changes into a liquid?

What is the formula for velocity?