An orange of mass 40g falls freely from a tree to the ground through a distance of 2.5m. Calculate the velocity just before it hits the ground.

What conditions are required for nuclear fusion? A. high temperature and low pressure B. high temperature and high pressure C. low temperature and high pressure D. low temperature and low pressure

In a first-class lever with a fixed load the amount of effort is dependent upon the position of the

Object Z passes object Y after how many seconds?

Which statement is true about how objects appear to bend that are partially submerged in water? They appear to bend at the surface due to reflection. They appear to bend at the surface due to refraction.

We push a 38.4-kg box across the floor at constant velocity. If we are pushing a horizontal force of 238 N, find the coefficient of kinetic friction between the box and the floor.

Which possible discovery would be attributed to an inorganic molecule? a protein that contains more energy than lipids a fireproofing spray used in firefighting a new energy-efficient fuel source a synthetic polymer that resists degrading

A light beam in air strikes the surface of water at an angle of 26° with the normal. When it enters the water it bends toward the normal, making an angle of 19° with it. The velocity of light in air is approximately 300,000 km/s.

Which best explains the relationship between the speed of sound and the medium through which it passes?

g The magnetic force on a charged particle A. depends on the sign of the charge on the particle. B. depends on the velocity of the particle. C. depends on the magnetic field at the particle's instantaneous position. D.

How fast must a 1000 kg car be moving to have a kinetic energy of 1.0 kWh