A net force of 125 N is applied to a certain object. As a result, the object accelerates with an acceleration of 24.0 m/s2. The mass of the object is

A) 3000 kg.
B) 2880 kg.
C) 144 kg.
D) 0.200 kg.
E) 5.20 kg.


E

Physics & Space Science

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All the following statements about Mars are true. Which one might have led to a significant loss of atmospheric gas to space?

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At its current rate of consuming hydrogen, the Sun can stably shine for ________

Fill in the blank(s) with correct word

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A hobbyist launches a projectile from ground level on a horizontal plain. It reaches a maximum height of 72.3 m and lands 111 m from the launch point. Assume no air. What was the angle of launch if g = 9.80 m/s2?

A) 69.0° B) 67.4° C) 22.6° D) 44.8°

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The half-life of 131I is 8.04 days. Three days after it was prepared, its activity was 0.50 ?Ci. How many curies (in ?Ci) were initially prepared?

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