Captain Kiddo is trapped into her car, a 1967 DeTomaso Mangusta, windows rolled up, which sinks deep down into the ocean.

A) Will she have a better chance to escape by the window or the door? Why?

Captain Kiddo is on cargo ship that travels from the Atlantic Ocean to the Amazon River.

B) Will the ship sink or rise with respect to the waterline as it moves from the ocean to the river water? Why?

A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point 11.6 m below the water level. Assume the tank is large so the velocity of the water at the top of the tank is zero. The rate of flow from the leak is 2.53×10−3 m3/min.

(a) Determine the speed at which the water leaves the hole.

(b) Determine the diameter of the hole (in millimeters).

Thank you!

I assume it is some kind of quantity. Google only made things more confusing.

I get that it has something to do with circuits.

I also get what a discrete charge is. In fact, I thought charges were, by definition, discrete - because each individual proton/electron/hole contributed one unit of charge.

Jason takes off from rest across level water on his jet-powered skis. The combined mass of Jason and his skis is 75 kg(the mass of the fuel is negligible). The skis have a thrust of 200N and a coefficient of kinetic friction on water of 0.10. Unfortunately, the skis run out of fuel after only 48s. What is Jason's top speed?

A) 81 m/s

B) 48 m/s

C) 130 m/s

D) 13 m/s

In the figure, a T bar ski tow pulls a skier up a hill inclined at 10 degrees above horizontal. The skier starts from rest and is pulled by a cable that exerts tension T at an angle of 30 degrees above the surface of the hill. The mass of the skier is 60kg and the effective coefficient of kinetic friction between the skis and the snow is 0.100. What is the maximum tension in the cable if the starting acceleration is not to exceed 0.400g ?

A charge of -1.0 µC is located at the origin, a second charge of 1 µC is located at x = 0, y = 0.1 m, and a third charge of 11 µC is located at x = 0.2 m, y = 0. Find the forces that act on each of the three charges.

(values for q=-1 is correct but all other values are wrong please show all work)

If you take a boat from earth and put it on a planet with twice earth’s gravity, what would

happen if you tried to float it in water? Hint: Think about the buoyancy force formula. (5

points)

2. You drop a cube of mass 1 kg into a cup of water. It sinks with an acceleration of 2

m/s^2.

a. What is the buoyancy force of the water? (4 points)

b. What is the density of the water if the volume of the cube is 30 cm^3 (4 points)

Two infinite planes of charge lie parallel to each other and to the yz plane. One is at x = -2 m and has a surface charge density of ϝ = -3.2 µC/m2. The other is at x = 3 m and has a surface charge density of ϝ = 4.0 µC/m2. Find the electric field for the following locations.

(a) x < -2 m = N/C (i hat)

(b) -2 m < x < 3 m = N/C (i hat)

(c) x > 3 m = N/C (i ha)t

What does the Schechter function describe? Describe the significance of each of the two fitting parameters. What does the de Vaucouleurs law describe? Describe the significance of each of the two fitting parameters.

You pour 100 g of cold milk (T_m=5 degrees C) into your 500 g hot coffee (T_c=80 degrees C) and mix them together. Assume this is an isolated system in which no heat is lost to the cup or surrounding air. Specific heat of milk: c_m= 3.97 J/(g°C), specific heat of coffee: c_c= 4.184 J/(gºC)

a. What is the final temperature of your drink after the milk and coffee are in thermal equilibrium?

b. What happened to the temperature of the milk? What happened to the temp of the coffee?

please answer both parts of the question!

An RLC series circuit has a 2.60 Ω resistor, a 200 µH inductor, and an 82.0 µF capacitor.

(a) Find the circuit's impedance (in Ω) at 120 Hz.

________Ω

(b) Find the circuit's impedance (in Ω) at 5.00 kHz.

________Ω

(c) If the voltage source has V_rms = 5.60 V, what is I_rms (in A) at each frequency?

I_{rms, 120 Hz}= _______A

I_{rms, 5.00 kHz}= _______A

(d) What is the resonant frequency (in kHz) of the circuit?

________kHz

(e) What is I_rms (in A) at resonance?

________A

1. How much heat energy is required to cool 450 grams of water at 20°C into ice at -20°C?

Given a liter of water just at boiling, how much energy does it take to boil it all?

A large boat with 91.44 m in length and 42.672 m in width is carrying 1,360,777.11 kg of coal along the river with a 2.7432m draft (the height from waterline to bottom of the boat). What is the draft and weight of the boat when the boat is empty (no coal)? What is the draft and weight of the boat if the boat hits a wave and looses 10 tons of coal? Treat the boat as a rectangular cylinder. Use university introductory physics techniques.

A 40.0-cm diameter disk rotates with a constant angular acceleration of 3.00 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time.
(a) At t = 2.45 s, find the angular speed of the wheel.

(b) At t = 2.45 s, find the magnitude of the linear velocity and tangential acceleration of P.
What is the linear velocity?
What is the tangential acceleration?   

(c) At t = 2.45 s, find the position of P (in degrees, with respect to the positive x-axis).
what is the answer ° counterclockwise from the +x-axis?