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
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What is meant by reversible heat transfer?
What will be an ideal response?
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
Gravity acts over a limited distance range
a. True b. False Indicate whether the statement is true or false
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