A mass vibrates back and forth from the free end of an ideal spring (k = 20. N/m) with an amplitude of 0.25 m. What is the maximum kinetic energy of this vibrating mass?
A) 2.5 J
B) 1.3 J
C) 0.63 J
D) 5.0 J
E) It is impossible to give an answer since kinetic energy cannot be determined without knowing the object's mass.
Question 2A dinosaur like a Brontosaurus with a small head and a large body would be expected to have an Encephalization Quotient (EQ) of
A) exactly 1
B) less than 1 but greater than zero
C) zero
D) greater than 1
Question 3A capacitor is connected to an AC power supply. In this circuit, the current
A) leads the voltage by 90.
B) is in phase with the voltage.
C) lags the voltage by 45.
D) lags the voltage by 90.
E) leads the voltage by 45.
Question 4The far point of a normal human eye is infinity.
Indicate whether the statement is true or false
Question 5How does the surface temperature and atmospheric pressure on Venus compare with the Earth?
A) higher temperatures and pressures
B) lower temperatures but higher pressures
C) lower temperatures and pressures
D) higher temperatures but lower pressures
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