An object weighs 300 N. If the gravitational constant G were half of what it is currently, what would the weight of the object be?
a. 300 N
b. 150 N
c. 75 N
d. 600 N
e. 450 N
b
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2.9x107 is the same as
a. 2.9 thousand b. 29 thousand c. 290 thousand d. 2.9 million e. 29 million
Venus' high surface temperature is due to the ________ effect
Fill in the blank(s) with correct word
Mass on a Spring: A 2.0-kg block on a frictionless table is connected to two springs whose opposite ends are fixed to walls, as shown in the figure. The springs have force constants (spring constants) k1 and k2. What is the oscillation angular frequency of the block if k1 = 7.6N/m and k2 = 5.0 N/m?
A. 2.5 rad/s B. 3.5 rad/s C. 0.40 rad/s D. 0.56 rad/s
Magnetic fields are produced by
a. constant electric currents. b. electric currents that vary sinusoidally with time. c. time-varying electric fields. d. all of the above. e. only (a) and (b) above.