Which of the following is not a vector quantity?
A) velocity
B) speed
C) acceleration
D) all are vector quantities
E) none are vector quantities.
Answer: B
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One of the results of wave refraction is that
A) wave energy is concentrated at headlands that project into the water. B) wave energy is concentrated in the recessed parts of the coast between headlands. C) sediment is deposited in the vicinity of headlands, making them larger. D) wave energy is dissipated before the waves reach the shoreline.
Nebulae that scatter light are bluer than the stars that illuminate them. Earth's sky is bluer than the Sun. Is this a coincidence? Explain why or why not
What will be an ideal response?
Two equal mass objects (which are in thermal contact) make up a system that is thermally isolated from its surroundings. One object has an initial temperature of 100°C and the other has an initial temperature of 0°C
What is the equilibrium temperature of the system, assuming that no phase changes take place for either object? (The hot object has a specific heat capacity that is three times that of the cold object.) A) 23°C B) 19°C C) 75°C D) 50°C E) 25°C