A body of mass 50kg is raised to a height of 2 meters above the ground. What is its potential energy? If the body is allowed to fall, find its kinetic energy just before impact with the ground?

What is best at transferring electrons?

What are the effects of noise?

Metallic bonding is similar to ionic bonding because? A. electrons are transferred between atoms. B. electrons are shared between atoms. C. the lattice that forms contains anions and cations. D.

A hoop with mass m and radius R is rolling without slipping on a horizontal surface with its center moving at a speed v. The rotational inertia of the hoop about its center is mR2. What is its total kinetic energy

What are the advantage of using every judiOusby

In an energy pyramid, the total energy available for consumption from one trophic level to the next one it is A. reduced B. Conserved C. multiplied D. Evenly distributed

Astronauts in orbit are not truly weightless.

Which of the following statements is true regarding the nature of light? Straight line motion is a particle property of light. Straight line motion is a wave property of light. Straight line motion is not a property of light.

A particle that is composed of two up quarks and one down quark is a (1) meson (3) proton (2) neutron (4) positron

Car headlights have both low beams and high beams. The high beams may be necessary when it is very dark outside. If the power for the high beam is 60.0 watts and the current is 5.0 amps, how much voltage is required?