A forklift raises a box above the floor and does 2,000 J of work. If the forklift motor consumes 3,000 J of electrical energy from the battery to raise the box, what is the efficiency of the lift?

Calculate the momentum of a 2500kg car with a velocity of 20 m/s

Water that is stored behind a dam is used to generate electrical energy. The process involves multiple transformations. For each step listed, determine the energy transformation that occurs. Lake water flows downward through tunnels.

The starter motor of a car engine draws an electric current of 123 A from the battery. The copper wire to the motor is 6.00 mm in diameter and 1.45 m long. The starter motor runs for 0.75 s before the car engine starts up.

Which statement is true about effective nuclear charge? a. Effective nuclear charge decreases as we move to the right across a row in the periodic tableb. Effective nuclear increases as we move to the right across a row in the periodic tablec.

Why Are Atoms Neutral? A. Protons Less Than Or Equal To Electrons B. Protons More Than Or Equal To Electrons C. Protons = Electrons

How do electric and magnetic fields interact to create electromagnets?

Select the correct answer from each drop-down Two magnets are placed as shown in the 00 В D between the poles B and . And the force of between the poles A and DIS Reset Next

Two main pieces of evidence support the big bang theory and the idea that our universe is continually expanding: Doppler shift and cosmic background radiation. Explain how these phenomena provide evidence of the expansion of the universe.

How was bohr atomic model similar to Rutherford's model

A rigid container filled with a gas is placed in ice. What will happen to the pressure of the gas? And what will happen to the volume?