An object moves 10 m east in 30 s and then returns to its starting point taking an additional 70 s. If west is chosen as the positive direction, what is the average speed of the object?
a. 0.20 m/s
c. 0.50 m/s
b. –0.20 m/s
d. 0 m/s
A
Physics & Space Science
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One mole of an ideal gas with a volume of 4.00 liters and a temperature of 0
is mixed with one mole of an ideal gas with a volume of 2.00 liters and a temperature of 100
The volume of the mixture is 6 liters. What is the N/V of the mixture?
a. 
b. 
c. 
d. 
e. 
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A) NHP B) flife C) fciv D) fnow
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What is the length of a simple pendulum with a period of 2.00 s?
A) 19.6 m B) 0.994 m C) 1.22 m D) 1.62 m E) 0.873 m
Physics & Space Science