Question

1. Calculate the number of moles in an ideal gas trapped in a cylinder of diameter .7 cm and a height of 10 cm, when pressure is at 1555 N/m2 at 6600 K.

a) 7.9 x 10-17

b) 6.2 x 10-23

c) 1.09 x 10-7

d) 1.2 x 10-2

2. Convert 1700 degrees Fahrenheit to the Kelvin temperature scale.
a) 1200 K
b) 973 K
c) 838 K
d) 644 K

3. How much power is generated when a 78 kg diver jumps from 8 ft in 0.5 seconds?
a) 12.2 kW
b) 3.7 kW
c) 18.0 kW
d) 1.87 kW

4. Given that ω = 25 rad/s on a merry-go-round of radius .08 km, calculate your speed.
a) 174 m/s
b) 2000 m/s
c) .277 m/s
d) 4.05 m/s
e) 20 m/s

5. How much work is done when a ping pong ball of mass .40 kg speeds up from 6 m/s to 10 m/s in 45 seconds and travels 14 km?

a) 5 x 10-2 J

b) 5 x 102 J

c) 5 x 10-4 J

d) 5 x 104 J

Answer 1