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When a charged particle moves in an electric field, the field exerts a force that can do work on the particle. The work can be expressed in terms of electric potential energy. Electric potential energy depends only on the position of the charged particle in the electric field.
GCSE Physics: Physics Test 1 - Energy (Foundation) Questions 2021. 2021 ASSESSMENT MATERIALS.
This test covers Work, mechanical energy, kinetic energy, potentialenergy (gravitational and elastic), Hooke’s Law, Conservation of Energy, heat energy, conservativeand non-conservative forces, with some problems requiring a knowledge of basic calculus.
Potential Energy is energy of position. An object gets potential energy from height, mass and gravity. An object with potential energy has the potential to do work. This potential is only released when the object falls. Kinetic Energy is energy of motion. An object gets kinetic energy from its mass and velocity.
At one point in space, the electric potential energy of a 15 nC charge is 45 uJ. a. What is the electric potential at this point? b. If a 25 nC charge were placed at this point, what would its electric potential be? Prepare: The connection between potential energy and potential is given by Equation 21.4: V Uq= /. Solve: (a) If . q =15 nC. and ...
Elastic potential energy = 0.5 × spring constant × (extension)2 A particular spring has a spring constant of 25 N/m. Calculate the energy stored when the spring is extended by 15 mm.
a. What is the kinetic energy if a 1 kg ball is thrown into the air with an initial velocity of 30 m/s? b. How much potential energy does the ball have when it reaches the top of its ascent? c. How high into the air did the ball travel? 12. What is the velocity of a 500 kg elevator that has 4,000 J of energy? 13.
