A spaceship, which has length 35 m and width 16 m when at rest, is moving in a direction along its length at a speed where its length contraction results in a 28-m length measured by a stationary observer. What would the measured width be in this case?
a. between 18 and 20 m
b. 16 m
c. 13 m
d. less than 13 m
e. 20 m
b
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4.00 kg mass is connected to a spring with a spring constant of 9.00 N/m. The velocity is given by the expression v(t) = 8.00 cm/s sinWhat is the maximum velocity of the simple harmonic motion?
A. 41.0 cm/s B. 32.8 cm/s C. 24.5 cm/s D. 20.5 cm/s E. 12.8 cm/s
Evidence that tidal interactions and collisions of galaxies may make ordinary galaxies active is that
a. many active galaxies are distorted. b. some active galaxies have companions. c. many active galaxies are distorted and some active galaxies have companions. d. active galaxies are neither distorted nor have companions.
Most astronomers agree to interpret ________ Law to mean that the present day universe is expanding
Fill in the blank(s) with correct word
Power: A force produces power P by doing work W in a time T. What power will be produced by a force that does six times as much work in half as much time?
A. 12P
B. 6P
C. P
D. P
E. P