1.
If a car horn honking that is 450 m is heard 1.3 seconds after it goes off, what is the temperature in degrees Celsius?
A) c. 56 °C
B) a. 25 °C
C) b. 34 °C
D) d. 12 °C
2.
A gas is taken through the cycle illustrated here. During one cycle, how much work
is done by an engine operating on this cycle?
A) PV
B) 3PV
C) 4PV
D) 2PV
3.
4.50 moles of an ideal gas is at 560K. Is the gas undergoes an adiabatic compression
and 3750 J of work is done on the gas, what is the final temperature of the gas?
A) b. 572 K
B) c. 2590 K
C) a. 627 K
D) d. 977 K
4.
 Using the standard form of a wave x = A cos(wt), for this wave: 2.5 cos(6.0 t) please
determine the following with the correct units: (Show the Work in determining the answers)
a. The amplitude.
b. The frequency.
c. The maximum and minimum speed
d. The maximum acceleration
5.
A 0.300 kg piece of metal is heated to 88°C and placed in a copper calorimeter with
mass 0.150 kg which contains 0.500 L of water that are both initially at 12.6°C. Over a short period
of time the mixture comes to an equilibrium temperature of 22.5°C, what is the specific heat of the metal?
A) a. 1250 J/(kg · °C)
B) c. 1500 J/(kg · °C)
C) b. 1075 J/(kg · °C)
D) d. 3400 J/(kg · °C)
6.
A CD with a diameter of 12.5 cm goes from rest to a tangential velocity of 5.6 m/s. If it does this
in 2.5 seconds, what is its angular acceleration?
A) b. 18 rad/s2
B) c. 24 rad/s2
C) a. 13 rad/s2
D) d. 16 rad/s2
7.
A piece of gold with a mass of 5.50 kg and density of 19300 kg/m3 is suspended from a
string and then totally immersed in a beaker of water. Using density of water is 1000 kg/m3
a) Determine the volume of the piece of gold.
b) Determine buoyant force on the gold when it is submersed.
8.
An object has a weight of 400 N when it is dry. When it is completely submerged in
water is has a weight of 150 N. What is the density of the material is the density of water is 1000 kg/m3?
A) c. 1200 kg/m3
B) a. 2300…