Based on the frequency with which we see comets from Earth, astronomers estimate the total number of comets in the solar system to be
A) 100 million.
B) 1 billion.
C) 10 billion.
D) 100 billion.
E) 1 trillion.
E
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A gas in which the pressure no longer depends on the temperature of the gas is said to be ____________________
Fill in the blank(s) with correct word
Two charges separated by one meter exert 1-N forces on each other. If the charges are pulled 3 meters apart, the force on each charge will be
A) 0.11 N. B) 0.33 N. C) 0 N. D) 3 N. E) 9 N.
A car is moving with a constant acceleration. At t = 5.0 s its velocity is 8.0 m/s and at t = 8.0 s its velocity is 12.0 m/s. What is the distance traveled in that interval of time?
A) 10 m B) 20 m C) 30 m D) 40 m E) 50 m
A spool of thread has an average radius of 1.00 cm. If the spool contains 47.5 m of thread, how many turns of thread are on the spool? "Average radius" allows us to not need to treat the layering of threads on lower layers
a. 15.1 b. 756 c. 149 d. 7.56