If an unbalanced force of 8 N force acts on a 7-kg object, what is its acceleration?
a. 56 m/s2
b. 1.1 m/s2
c. 0.88 m/s2
d. 15 m/s2
e. cannot be determined
b
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If part of the full Moon passes through Earth's umbra, we will see a(n)
A) total lunar eclipse. B) penumbral lunar eclipse. C) partial lunar eclipse. D) partial solar eclipse. E) annular eclipse.
A 25.0kg propeller may be considered a 4.5m-long rod spun about its center. What final angular velocity does the propeller have if a torque of 1100Nm is applied for 1.2s?
A. 31 rad/s B. 26 rad/s C. 7.8 rad/s D. 2.6 rad/s
Velma is in a rocket ship moving north past Mort at half of lightspeed relative to Mort. She fires a laser beam forward from the front of her ship. Mort sees the laser beam move at
A) slightly faster than c. B) slightly slower than speed c [lightspeed]. C) 1.5c. D) c. E) 0.5c.
Draw the two structural isomers for propanol