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...
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 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?
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...
as the sound from one bird. explain?
Choose a compound machine that is composed of at least two simple machines. Explain what it does and how it works.
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?
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. gravitation has been the hardest force to unite with electroweak and strong nuclear interactions. b. until we can detect gravitational waves, it will remain a mystery. c...
Dart hits wheel. In terms of m, M, v0, and R (of wheel), find: A) angular speed of wheel B) ratios of initial and final kinetic energies
PLease provide a detailed explanation. 1) Suppose that the net external force (push minus friction) exerted on a lawn mower is 51 N parallel to the ground.The mass of the mower is 24kg...
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 be one...
a. They were able to observe their tracks in cloud chambers. b. Scientists were confident in the law of Conservation of energy. c. They were able to calculate exactly how much mass...
A police car is driving past an observer sitting by the side of the road, what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes away...
Because of friction pendulum clocks need a small driving force, if accidentally it was too large of a driving force and caused a bit too large of an angle of oscillation to be formed what would happen...
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...
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.
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.