A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 24 meters above its point of release
The same dart is shot up a second time from the same gun, but this time the spring is compressed only half as far (compared to the first shot). How far up does the dart go this time? (Neglect friction and assume the spring is ideal and massless.) A) 6.0 m
B) 12 m
C) 3.0 m
D) 48 m
A
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Earth and Venus have more substantial atmospheres because they are larger and had more volcanic activity.
Answer the following statement true (T) or false (F)
The unusually bright centers found in some galaxies are called
A) active galactic nuclei. B) halos. C) supermassive black holes. D) starbursts.
A hydrogen atom is in the 6h state. Which one of the following numbers could be an orbital angular momentum quantum number ? for that state?
A) 5 B) 6 C) 7 D) 8 E) 9
Tensile stress is
A) the strain per unit length. B) the same as force. C) the ratio of the change in length. D) applied force per cross-sectional area.