At what angle (relative to the horizontal) should a curve 52.0 m in radius be banked if no friction is required to prevent the car from slipping when traveling at 11.6 m/s? (g = 9.80 m/s2)
a. 0.264°
b. 1.30°
c. 14.8°
d. 2.59°
c
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A cart is moving with a constant horizontal velocity of 5.00 m/s
A small pebble is launched from the front of the cart with a velocity of 8.00 m/s at 60.0° above the horizontal as measured relative to the cart (see figure) and experiences no significant air resistance. Just as the pebble returns to the level from which it was launched, its distance from the front of the cart is closest to A) 2.83 m. B) 4.60 m. C) 5.66 m. D) 9.19 m. E) 11.3 m.
The energy radiated by a star, such as the Sun, results from
A) beta decay. B) alpha decay. C) fission reactions. D) fusion reactions. E) gravitational collapse.
How many times bigger is the Local Group of Galaxies in which the Milky Way resides than the Milky Way Galaxy itself?
a) it isn't bigger than the Milky Way b) about 10 times bigger c) about 1040 times bigger d) about 1010 times bigger e) about 1 million times bigger
The star Vega rises today at 6:40 A.M. Tomorrow it will rise at ________.
A. 6:32 A.M. B. 6:44 A.M. C. 6:40 A.M. D. 6:44 P.M. E. 6:36 A.M.