At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from the stage would you need to be to hear the concert at 90 dB?
At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from the stage would you need to be to hear the concert at 90 dB?
Doubling the intensity of sound: a. Doubles the sound level. b. Increases sound level by factor of √2 . c. Increases sound level by 3 dB.
Two unequal masses of iron both have the same Internal energy, which of the following is true? a. The larger mass is hotter b. The smaller mass is hotter c. The have the same...
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...
2.50 moles of an ideal monatomic gas are compressed from 315,000 Pa to 175,000 Pa at 0.0300 m3. What is the change in internal energy in this isochoric process?
How does energy transmit from the tuning fork to the string of the sonometer?
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...
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...
Suppose a car merges into freeway traffic on a 200 long ramp. If its initial velocity is 10 m/s and it accelerates at 2m/s2, how long does it take to travel 200 m up the ramp? Please provide a...
a. 8.0 cm b. 12 cm c. 20 cm d. 16 cm
On a phase diagram there is a triple point, where solids liquids and gasses all exist at the same temperature and pressure. If I decrease the temperature but increase the pressure from this triple...
If a contained ideal gas decreases the volume by a factor of two and then triples the temperature, what happens to the pressure? a. It goes up by a factor of 2 b. It goes up by...
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency...
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency, and what harmonic...
If one wanted to help insulate their house, by replacing their windows made of the same material, would it be better to have, smaller windows (say let A = ½ original) or thicker glass (say twice...
If a tank has 2.50 g of N2 (nitrogen atom has 14 nucleons) and a volume of 1950 cm3 and it is held at 142 0 C, what is the pressure?
Using the correct relationship between temperature in Celsius and Fahrenheit, what one temperature has the Fahrenheit value equal the Celsius value?
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...
I think a) is (b-y)^2 + x^2 = L^2; the second derivative of this can be taken to get the actual accelerations. I can't get b) though. Have been stuck on this for a while! Thank you!...
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...