Physics, 19.12.2020 01:00 blacklifewed
A rock is thrown straight up from the surface of the Earth. Which one of the following statements describes the energy
transformation of the rock as it rises? Neglect air resistance.
a) The total energy of the rock increases.
b) The kinetic energy increases and the potential energy decreases.
c) Both the kinetic energy and the potential energy of the rock remain the same.
d) The kinetic energy decreases and the potential energy increases.
e) Both the potential energy and the total energy of the rock increase.
Answers: 3
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Write down two additional questions about earth's magnetic field that will make your presentation more informative.
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Physics, 23.06.2019 00:30
Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?
Answers: 1
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Aprotein molecule in an electrophoresis gel has a negative charge.the exact charge depends on the ph of the solution, but 30 excesselectrons is typical. what is the magnitude of the electric forceon a protein with this charge in a 1500 n/c electric field?
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Physics, 23.06.2019 17:00
Select the correct answer. what happens to the acceleration of an object if the net force on it increases? a. the acceleration increases. b. the acceleration decreases. c. the acceleration becomes zero. d. the acceleration remains the same
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A rock is thrown straight up from the surface of the Earth. Which one of the following statements de...
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