Simple Harmonic Motion: A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and a frequency of 875 Hz.(a) What is the maximum speed of that point in SI units?(b) What is the maximum acceleration of the point in SI units?
What will be an ideal response?
(a) 6.82 m/s (b) 3.75 × 104 m/s2
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A 1500-kg car traveling at 90 km/h toward the east suddenly collides with a 3000-kg car traveling at 60 km/h toward the south. The two cars stick together after the collision. What is the direction of motion of the cars after collision?
A) 53.1° S of E B) 53.1° E of S C) 36.9° E of S D) 36.9° S of E
If a nuclide has a half-life of 100 s, what is the corresponding mean lifetime?
A. 100 s B. 144 s C. 69 s D. 50 s E. 75 s
Planets found in the habitable zone of other stars:
A) are all rocky planets, like the terrestrial planets in our solar system. B) are all jovian planets. C) include some Earths and super-Earths. D) include hot Jupiters. E) have been demonstrated to be barren of all life.
A 2-m-tall person viewing his full-length image in a plane mirror requires a mirror that is at least
1) any visible size. 2) 2 m tall. 3) 1 m tall. The size of mirror required 4) depends on how far away from it he stands. 5) does not depend on how far away from it he stands.