A mass of 2.0 kg hangs from a spring with a force constant of 50 N/m. An oscillating force F = (4.8 N) cos[(3.0 rad/s)t] is applied to the mass. What is the amplitude of the resulting oscillations? Neglect damping
A)
0.15 m
B)
0.30 m
C)
1.6 m
D)
2.4 m
E)
0.80 m
A
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If the Earth's rotational axis were to be perpendicular to the ecliptic, seasonal variations on the Earth would
a. be non-existent. b. remain the same as they are at now. c. have the same severity but each season would last twice as long. d. be much more severe.
Extrasolar planetary systems are similar to our solar system in all of the following ways, EXCEPT:
A) that planetary orbits are relatively coplanar. B) for the presence of hot Jupiters in some systems. C) that planets orbit in the same direction that their parent star rotates. D) that the systems contain interplanetary debris, such as comets or asteroids. E) None of these are dissimilar to our solar system.
A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is 10 m/s2
a. True b. False Indicate whether the statement is true or false
Isaac Newton's contributions to physics include
a. the laws of motion. b. the law of universal gravitation. c. invention of the calculus. d. the invention of the reflecting telescope. e. all of the above.