A lever is used to lift a heavy rock. The mechanical advantage of the lever is 4 and the lever applies a force of 800 N to the rock. What is the force applied to the lever?

An airplane flies due north at 100 m/s through a 30 m/s cross wind blowing from the east to the west. Determine the resultant velocity of the airplane.

Which is considered to be a scientific model? A) A hypothesis B) A guess based on conjecture C) An opinion based on fact or conjecture D) Mathematical algorithms of natural event

John runs for 10 mins at a uniform speed 9kn/h. At what speed should he run for the next 20mins so that theaverage speed comes to 12km/h.

What determines the ideal mechanical advantage of a pulley?

Qyjaśnij związek pomiędzy sakramentami i paschą jezusa (na obrazku jest zdjecie z dziecka ktore ksiadz chrzci, drugirysunek to jak ksiądz mieli się nad eucharyeucharystia a ana3 ajak ksiadz spowiada

How the properties of sound waves change as they spread out in a spherical pattern

If legos are plastic can they be recycled?

At an accident scene on a level road, investigators measure a car's skid mark to be 93 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35.

How does a shorter wavelength affect the frequency of a wave?

Which property of a filled balloon would be unchanged on the moon where there's no air and less gravity? A. mass B. weight C. volume D. density