Physics 210 - Final Extended

Ideal gas

100

1. At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?

446.7 K

200

1. 1.009 mol H2 produces a pressure of 1.015 atm in a 5.00 L container at −211.76 °C. What will the temperature (in °C) have to be if an additional 1.041 mol H2 are added to the container and the pressure increases to 3.015 atm?

89.75 K

300

Container A holds N2 gas with a mass of 2.006 mol and is 4.4 times the volume of container B, which holds argon (Ar) gas at the exact same temperature and pressure. How many moles of Ar are within container B?

0.5 mol

400

QUICK - find make groups of threes! Odd men out have a punishment…

Punishment = 5 I‘M A STAR!!

Thermo

100

1. A 20 kg steel sword is cooled from 500C˚ to 90C˚ by dipping it in 20 kg of water that is at 70C˚. If the specific heat of the steel is 502 J/KgC˚ and the specific heat of water is 4187 J/KgC˚, what will be the temperature of the water after the steel has cooled?

119.2 C˚

200

QUICK- Do ten air squats- last one has a punishment!

Punishment- yell I LOVE PHYSICS with jazz hands

300

A patient’s leg was put into traction, stretching the femur from a length of 0.46m to 0.461m. The femur has a diameter of 3.05cm. If the Young’s modulus of 1.6 x 1010 in tension, what force was used to stretch the femur?

25412.75 N

400

A steel beam is 7.0m long at a temperature of 25CK. On a hot day, the temperature reaches 38C˚. What is the change in the beam’s length due to thermal expansion, given that the thermal expansion coefficient for steel is 1.2 x 10-5?

0.00109 m

Ideal fluids

100

1. What is the net force on a ball of mass 15kg and volume of 0.2m3 when it is submerged under water? g = 10m/s2, and the density of water is 1.0g/mL

2000 N

200

1. Water is flowing in a fire hose with a velocity of 1.0 m/s and a pressure of 200000 Pa. At the nozzle the pressure decreases to atmospheric pressure (101300 Pa), there is no change in height. Use the Bernoulli equation to calculate the velocity of the water exiting the nozzle. The density of water is 1000 kg/m3 and gravity g is 9.8 m/s2. Pay attention to units!

14 m/s

300

QUICK - High five 7 people! Last one has a punishment!

Punishment - you get to explain the next problem for us!

400

1. In a pipe that has a cross-sectional area of 0.5m2 and a flow rate of 1.5m3/s, what is the average speed of the fluid carried by the pipe?

3 m/s

Oscillations

100

QUICK - stand on one foot for 30 seconds. Last one standing wins!

Punishment- all losers will have to share their best pig noise at the same time!

200

1. One end of a light spring with spring constant 10 N/m is attached to a vertical support, while a mass is attached to the other end, as shown. The mass is pulled down and released, and exhibits simple harmonic motion with a period of 0.2pi. Find the mass of the object.

9.74 Kg

300

1. A simple pendulum has a period T on the earth. What is the period T of this same pendulum on the moon, where the acceleration due to gravity is 1/6 that of the earth?

Square root 6 x T

400

1. A simple pendulum of length 0.6m  with a block of mass 5 kg attached has a maximum velocity of 1.2m/s. What is the maximum height of the block?

0.007m

Sound

100

A sound source with a frequency of 790 Hz moves away from a stationary observer at a rate of 15m/s. What frequency does the observer hear?

756.9 Hz. 

200

QUICK - look up the fastest speed that a warthog can run. First one wins!

34 miles per hour

Punishment- give the person next to you a compliment!

300

1. A fire truck emits an 880 Hz siren. As the truck approaches an observer on the sidewalk, he perceives the pitch to be 950 Hz. Approximately what pitch does he hear after the truck passes and is moving away?

819.61 Hz

400

QUICK - Find the nearest water bottle you have and hold it up high! Loser has a punishment

Punishment - Give us your best trick shot!