Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization...
Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization...
Kinetic theory a. What is the average kinetic energy of a monatomic gas at a temperature of 354 K? b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed...
If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?
Consider a common refrigerator in a standard home, where the temperatures are 22.0 C in the home and the refrigerator is kept slightly above freezing. If a 0.750 kg ice cube initially at 0.00...
If you want to find the latent heat of fusion, you take a cup with 0.755 kg of water at 30.00 C and drop 0.0850 kg of ice initially at 0.000 C and it all reaches an equilibrium temperature of...
Derive velocity of forward propagation = wavelength x frequency, probably deriving it from the formula for angular motion. 2 speakers, 1 behind the other, same hertz. Someone walking towards...
a. must have passed through the center of the lens b. parallel to the horizontal axis c. must have pass through the focal point on the opposite side of the lens d. vert...
Mass=100 kg Angle= 30 degree Distance= 20 meter Speed =?
Excluding stoppages the speed of a bus is 54km/hr and including stoppages it is 45 km/hr. For how many minutes the bus stop per hour.
I'm reviewing some practice thermodynamics questions for my upcoming physics exam but I can't figure out how to set these up properly. 1. If you mix two parts hot 80° C water with one...
b) The above piano is being pushed across the floor with an applied force of 283 N [forward] and a force of friction of 271 N [backwards]. If the normal force...
Hello, I'm taking a summer course in college physics and am reviewing some practice questions to prepare for my oncoming exam. I'd really appreciate some help on this question that I'm not...
Hello, I'm taking a summer course in college physics and am reviewing some practice questions to prepare for my oncoming exam. I'd really appreciate some help on this question that...
The electric potential increases from 72 V to 686 V from the bottom plate to the top plate of a parallel plate capacitor. What is the magnitude of the change in potential energy of a -3 X 10^-6 C...
Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and...
I was given this worksheet in class and my professor refuses to explain it to us. I need help!! For the given sample: Wooden cube (rectangular). Measure its mass in grams...
I have some difficulties solving the weak form of the PDE: The proof of the preceding statement is elementary. The weak form of the PDE ∇·(A(x)∇u)+ω^2*q(x)*u = 0 for all φ that vanish at ∂?. Could...
What is the mechanical advantage of a claw foot hammer having a handle with a length of 45 cm and head length of 10 cm? a. 1/9 b. 2/9 c. 2/5 d. 5/2 e. 9/2 f...
At a dilapidated playground, people have stolen the support bar to a merry-go-round leaving a flat disk that can rotate freely. While pondering conservation of angular momentum, a curious physics...
A long string of length 1.5 m is made of steel . The tension in it produces elastic strain of 1% . calculate its fundamental frequency ? 89 Hz 178 Hz 356 Hz ...