1-a 4 hz continuous wave travels on a slinky.
if the wavelength is 0.5m, what is the speed of...
Physics, 03.07.2019 01:20 ruinmylife
1-a 4 hz continuous wave travels on a slinky.
if the wavelength is 0.5m, what is the speed of waves on the slinky in ms-1?
2-a wave with oscillations perpendicular to the direction of propagation is called:
3-the only way to make sound travel faster in air is to change the air's
4-what is the rms of a signal with the waveform?
v(t) = 20.5 sin(4t)
5-what is the peak to peak amplitude (in volts) of a signal with the waveform
v(t) = 20.5 sin(4t)
6-the wavelength of a 40 000 hz ultrasound wave is measured to be 0.868cm.
find the air temperature (in oc)
7-a wave travelling 80m/s has a wavelength of 3.2m.
what is the frequency of the wave in hz?
Answers: 3
Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 06:30
Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)
Answers: 1
Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
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