The restoring force of a spring is proportional to the displacement of the object at the end.

Indicate whether the statement is true or false.


Ans: True.

Physics & Space Science

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Carnot Engine: An ideal Carnot heat engine operates between reservoirs at 1740 K and 150 K. In each cycle, 260 J of heat energy is rejected to the low temperature reservoir. In each cycle, how much mechanical work W is performed by the engine?

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Consider the two inductors shown below (which are in independent circuits). The induced emf in each inductor is such that the inductor behaves like a battery with its positive end to the right. Which inductor carries the larger current?

A. Inductor 1 B. Inductor 2 C. The current or change in current is the same in both. D. One needs more information to answer the question.

Physics & Space Science

At time B, is the expansion of the universe accelerating, coasting, or decelerating?

What will be an ideal response?

Physics & Space Science

A tiny particle with charge + 5.0 ?C is initially moving at 55 m/s. It is then accelerated through a potential difference of 500 V. How much kinetic energy does this particle gain during the period of acceleration?

A) 1.0 × 104 J B) 2.5 × 10-3 J C) 100 J D) 2500 J

Physics & Space Science