A 5.00 kg object has a moment of inertia of 1.20 kg 
What torque is needed to give the object an angular acceleration of 2.0 
A. 2.4 N•m
B. 2.6 N•m
C. 2.8 N•m
D. 3.0 N•m
E. 3.2 N•m
A. 2.4 N•m
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A ball is thrown straight up with an initial speed of 30 m/s. What is its speed after 4.2 s?
A. 72 m/s B. 42 m/s C. 30 m/s D. 11 m/s
What makes Mimas a distinct moon?
A) It suffered a huge meteorite impact that must have nearly shattered it. B) It helps maintain a wide apparent gap in Saturn's rings, known as Encke's Division. C) It has a rich atmosphere that may resemble that of the early Earth. D) It is the largest of Saturn's moons. E) The leading hemisphere is very dark, while the back side is bright ice.
A super train is moving along a track at a speed close to the speed of light. You are watching the train from the ground. You observe lightning to strike in two places along the track, a mile apart, at precisely the same time
What would someone on the train say? A) The two bolts of lightning struck at different times, and they struck at places that are more than a mile apart. B) The two bolts of lightning struck at the same time, and they struck at places that are less than a mile apart. C) The two bolts of lightning struck at different times, and they struck at places that are precisely a mile apart. D) The two bolts of lightning struck at different times, and they struck at places that are less than a mile apart.
Galileo's early telescopes revealed the four large moons of Jupiter, the rings of Saturn, and its large moon Titan
Indicate whether the statement is true or false