A physics student is riding on a train traveling north. Having read about inertia, the student performs an experiment with a golf ball. He reaches over the aisle and drops the ball from rest. Instead of hitting the floor directly below the student's hand, it hits to the north, i.e., forward of that position. Which of the following might be the cause for this to happen?
a. The train is moving at constant velocity. b. The train is speeding up.
c. The train is slowing down. d. Whatever the cause, it cannot be any of the answers given.
c
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Why does Titan have such a nitrogen-rich atmosphere?
A) It was formed that way in the solar nebula. B) The nitrogen comes from the breakup of ammonia (NH3 ) by solar radiation and subsequent thermal escape of the hydrogen. C) The nitrogen was formed from the chemical reaction of sulphuric acid with surface rocks. D) Through the impact of nitrogen rich comets during the early solar system. E) The nitrogen was created through a chain of fusion reactions in Titan's core.
Most comets are discovered when their coma develops, giving them a fuzzy appearance instead of stellar such as asteroids
Indicate whether the statement is true or false
Which is more dangerous, touching a faulty 120-V light fixture, or a Van de Graaff generator charged to 100,000 V?
A) light fixture B) generator C) both equally
The fourth planet from the Sun is ______________
Fill in the blank(s) with correct word