If one star has a parallax ten times larger than another's, the first star is ________ than the second
A) ten times closer B) five times closer C) ten times further D) five times further
A
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A small boat is moving at a velocity of when it is accelerated by a river current perpendicular to the initial direction of motion. If the acceleration of the current is 0.750 m/s2, what will be the new velocity of the boat after
A) 25.3 m/s at 82.4° from initial direction of motion B) 25.3 m/s at 7.59° from initial direction of motion C) 640.1 m/s at 82.4° from initial direction of motion D) 640.1 m/s at 7.59° from initial direction of motion
A 15-kg mass, attached to a massless spring whose force constant is 2500 N/m, has an amplitude of 4 cm. Assuming the energy is quantized, find the quantum number of the system, n, if En = nhf
a. 1.5 × 10^33 b. 3.0 × 10^33 c. 4.5 × 10^33 d. 5.4 × 10^33 e. 1.0 × 10^33
For an FCC crystal, which of the following x-ray (hkl) diffraction peaks is not present?
(a) (100) (b) (111) (c) (131) (d) (200)
Consider a point on a bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. Compare the linear and angular displacements of the point
a. Both are zero. c. Only the linear displacement is zero. b. Only the angular displacement is zero. d. Neither is zero.