The following quantities relate to the rate of change of position. Which pair will always have the same magnitude?

A. Average speed and average velocity
B. Average velocity and instantaneous velocity
C. Instantaneous speed and instantaneous velocity
D. Average speed and instantaneous speed


Answer: C

Physics & Space Science

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A platinum sphere has a radius of 1.20 cm. The density of platinum is 21.4×103 kg/m3. What is the mass of the sphere?

A) 37.0 g B) 38.7 g C) 69.3 g D) 21.4 g E) 155 g

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What is meant by reversible heat transfer?

What will be an ideal response?

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Helium fusion is sometimes referred to as the _______________ because three helium nuclei are needed to make a carbon nucleus, and because the helium nucleus is called an alpha particle

Fill in the blank(s) with correct word

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