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51.
Which of the following quantities is a vector?
Explanation:
52.
According to Newton's third law of motion, for every action, there is an equal and opposite:
Explanation:
53.
What is the SI unit of heat energy?
54.
In a phase change from a solid to a liquid, at what temperature does the substance absorb heat without a change in temperature?
Explanation:
55.
What is the SI unit of electric capacitance?
Explanation:
56.
In an electrical circuit, what is the term for a device that stores and releases electric energy?
Explanation:
57.
What type of mirror is commonly used in rearview car mirrors to provide a wider field of view?
Explanation:
58.
What is the phenomenon where light waves combine and reinforce each other, resulting in a brighter light?
Explanation:
59.
When an object is in free fall near the surface of the Earth, what is the magnitude of the acceleration due to gravity?
Explanation:
60.
According to the law of conservation of energy, the total energy of a closed system: