The next moon likely to be broken up into a ring is
A) Triton. B) Mimas. C) Io. D) Ganymede. E) Charon.
A
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While a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its horizontal component of velocity
A) increases. B) remains unchanged. C) decreases.
If a star appears to move back and forth relative to other stars over a six-month period, this motion is due to the star's
A) transverse motion. B) radial motion. C) parallax shift. D) Doppler shift. E) true space motion.
What mass of 14C (having a half-life of 5730 years) do you need to provide a decay rate of 280.0 Bq? (1 u = 1.6605 × 10-27 kg)
A) 1.70 × 10-12 kg B) 5.38 × 10-19 kg C) 3.84 × 10-20 kg D) 8.68 × 10-13 kg
A 1000-kg car is moving at 15 km/h. If a 2000-kg truck has 23 times the kinetic energy of the car, how fast is the truck moving?
A) 51 km/h B) 72 km/h C) 61 km/h D) 41 km/h