The work done by a spring force is expressed as potential energy. Select one: True False
A conservative force is one for which Select one: 1. the work done is independent of path. 2. the work done is dependent on path. 3. frictional forces are involved. 4. potential energy stored can not be recovered as kinetic energy. Question 2 Hooke's law relates the distance a spring stretches or compresses to Select one: 1. the energy stored in the spring. 2. the velocity of the spring. 3. the force exerted on the spring. 4. the work done...
a) To determine the work done, one can always just simply multiply force time distance. True False b) A conductor in electrostatic equilibrium must be entirely at the same potential. True False c) The electric field is always tangent to an equipotential surface. is always perpendicular to an equipotential surface. makes an angle to an equipotential surface that depends on the amount of charge. always bisects an equipotential surface. d) The electron-volt is an alternative unit for electric potential. electric...
Question 1 The change in electric potential energy is the negative of the work done by the electric force. the work done by the electric force. the negative of the electric force. the electric force. . Question 2 The electric potential difference is . the same as the change in the electric potential energy. the change in the electric potential energy times the charge. the charge divided by the change in the electric potential energy. the change in the electric...
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Quiz#4 Name: 1). Energy is defined as an ability of doing work a) True b) False c) Can's say 2). 1 Jule of energy corresponds to the work done a) 1 Nm b) 3 Nm c) 5 Nm 3). According to physics, does the earth do any work on moon a) No c) Can't say b) Yes 4). When we drop an object from a maximum height, initial kinetic energy is zero a) True b) False c) Undetermined...
The work done by the spring's restoring force on the free end of a spring while it is compressed (by a person) from its relaxed configuration to a certain final configuration is given by 1.The spring force times the distance the spring is compressed at its final configuration. 2.The spring's elastic energy in the initial configuration. 3.The opposite of the spring's elastic energy in the final configuration. 4.The spring's elastic energy in the final configuration. 5.The opposite of the spring's...
Select all of the following statements that are true about potential energy and conservative forces. Potential energy is the energy associated with the configuration of a system. It is only possible to have potential energy if there are 2 or more objects in the system that interact with each other through internal, conservative forces. Absolute values of potential energy have no meaning: only changes in the potential energy are physically meaningful. There is only one kind of potential energy: gravitational...
Potassium channels open first following stimulation leading to an action potential Select one: True False The concentration of sodium ions are highest in the cytoplasm of neurons Select one: True False
Consider the force-displacement graph for a spring shown. Determine the spring constant, the potential energy stored when the spring is stretched from x = 0 to x = 4.0 cm. the change in the potential energy stored in stretching the spring from x = 1.0 cm to x = 4.0 cm. A cart having a mass M = 180 g on a friction free horizontal surface is accelerated from rest by the launching spring of problem 2. What is the...
The force constant of a spring is 550 N/m. How much elastic potential energy is stored in the spring if the spring is compressed a distance of 1.2 cm? What is the force being used to compress the spring?