1. Using the standard form of a wave x = A cos(t), for this wave: 2.5 cos(6.0 t) please determine the following with the correct units:

1. Using the standard form of a wave x = A cos(t), for this wave: 2.5 cos(6.0 t) please determine the following with the correct units:
a. The amplitude.
b. The frequency.
c. The maximum and minimum speed
d. The maximum acceleration
2. 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) b. 1075 J/(kg ∙ °C)
B) d. 3400 J/(kg ∙ °C)
C) c. 1500 J/(kg ∙ °C)
D) a. 1250 J/(kg ∙ °C)
3. 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) 24 rad/s2
B) 16 rad/s2
C) 18 rad/s2
D) 36 rad/s2
4. 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) b. 4500 kg/m3
B) a. 2300 kg/m3
C) c. 1200 kg/m3
D) d. 1600 kg/m3
5. 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) c. 2590 K
B) b. 572 K
C) d. 977 K
D) a. 627 K
6. 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.
7. A gas is taken through the cycle illustrated here. During one cycle, how much work is done by an engine operating on this cycle?
https://angel.grantham.edu/AngelUploads/QuestionData/8929264a-1fc0-4185-b77f-c8c3a64b7962/14.jpg#{A0CF7643-35A7-4205-A1E9-B6E16EC74FF6}
A) 3PV
B) PV
C) 4PV
D) 2PV
8. 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) d. 12 °C
D) b. 34 °C