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

Calculate the number of moles in an ideal gas trapped in a
cylinder of diameter .7 cm and
height .9 cm, when pressure is at 1500 N/m2
at 6600 K.
a) 7.9 x 10-17 N/m2
b) 7.37 x 10-9 N/m2
c) 6.23 x 10-23 N/m2
d) 1.2 x 10-2 N/m2

10. 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
11. Convert 4π/3 radians to degrees.
___________________________.
12. A physics textbook is dropped from 20 m and has a mass of 14
kg. What is its kinetic energy 5/9 of...

QUESTION 4
A thick cylinder of inner radius 10 cm and outer radius 50 cm
rolls at 4 m/s without slipping. If the cylinder has a mass of 10
kg, what is its moment of inertia?
a.
1.30 kg m^2
b.
3.00 kg m^2
c.
1.25 kg m^2
d.
1.20 kg m^2
QUESTION 5
A thick cylinder of inner radius 10 cm and outer radius 50 cm
rolls at 4 m/s without slipping. What is the rotational (angular)
speed of...

What is the change in length of a metal rod with an original
length of 4 m, a coefficient of thermal expansion of 0.00002/ ° C,
and a temperature change of 30° C?
1.
2.4 mm
2.
12 mm
3.
1.2 mm
4.
24 mm
Determine the number of electrons passing through a point in the
wire in 8 minutes when the current is 10 A.
a.
3 * 1016 electrons
b.
none of these
c.
4,800 electrons
d.
1.6...

1 a- A thick cylinder of inner radius 10 cm and outer radius 50
cm rolls at 4 m/s without slipping. If the cylinder has a mass of
10 kg, what is its linear kinetic energy?
Optional Answers:
1. 80 J
2. 41.6 J 3. 121.6 J 4. 0 J
b- A thick cylinder of inner radius 10 cm and outer radius 50 cm
rolls at 4 m/s without slipping. If the cylinder has a mass of 10
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1. Which of the following facts best explain why it is hotter in
the summer and colder in the winter?
a) Kepler’s laws
b) Newton’s universal law of gravity
c) the Earth has an elliptical orbit around the sun
d) the Earth’s axis is tilted
2. Planet X has three times the mass of the Earth and half the
radius. What is the acceleration of an object in free fall on
Planet X?
a) 14.7 m/s2
b) 29.4 m/s2
c)...

1) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg
and length 50.0 cm pivoted about its center and at rest. How fast
is the rod spinning after 4.25 s?
a. 32.6 rad/s
b. 8.16 rad/s
c. 97.9 rad/s
d. 24.5 rad/s
2) A torque of 1.20 N m is applied to a thin rod of mass 2.50 kg
and length 50.0 cm pivoted about one end and at rest. How fast is...

Steam enters a horizontal 14-cm-diameter pipe as a saturated
vapor at 5 bar with a velocity of 10 m/s and exits at 4.5 bar with
a quality of 95%. Heat transfer from the pipe to the surroundings
at 291K takes place at an average outer surface temperature of 400
K. For operation at steady state, determine
(a) the velocity at the exit, in m/s.
(b) the rate of heat transfer from the pipe, in
kW.?
(c) the rate of entropy...

Steam enters a horizontal 14-cm-diameter pipe as a saturated
vapor at 5 bar with a velocity of 10 m/s and exits at 4.5 bar with
a quality of 95%. Heat transfer from the pipe to the surroundings
at 291K takes place at an average outer surface temperature of 400
K. For operation at steady state, determine
(a) the velocity at the exit, in m/s.
(b) the rate of heat transfer from the pipe, in
kW.?
(c) the rate of entropy...

A tank contains one kilomole of a monatomic ideal gas, argon,
and has a pressure of 1 atm and a temperature of 300 K. The mass of
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b.) Calculate the average energy per atom in eV. (1eV = 1.602 x
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