a. 4.86x10-7 m b. 3.54x10-8 m c. 2.43x10-7 m d. 4.86x10-5 m
a. 4.86x10-7 m b. 3.54x10-8 m c. 2.43x10-7 m d. 4.86x10-5 m
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds] What are the following for this system:...
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.
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?
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?
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
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...
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...
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...
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.
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...
A commuter train travels from Baltimore to Washington DC and back in 1 hour and 45 minutes. The distance between these two stations is about 40 miles. a.) What is the average velocity of...
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?
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...
Using the correct relationship between temperature in Celsius and Fahrenheit, what one temperature has the Fahrenheit value equal the Celsius value?
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...