Question 1 of 10
2 Points
A piece of ice absorbs heat and melts. Which statement best describ...
Physics, 16.06.2020 14:57 Anikarenee
Question 1 of 10
2 Points
A piece of ice absorbs heat and melts. Which statement best describes the
changes in the ice as it melts?
A. The kinetic energy of the particles increases as the temperature
increases.
B. The potential energy of the particles increases as intermolecular
forces are overcome.
C. The potential energy of the particles increases as the temperature
increases.
D. The kinetic energy of the particles increases as intermolecular
forces are overcome.
Answers: 1
Physics, 22.06.2019 00:00
Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.
Answers: 2
Physics, 22.06.2019 03:50
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
Physics, 22.06.2019 16:30
Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)
Answers: 1
Physics, 22.06.2019 20:00
Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
Answers: 3
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