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The speed of light in air is 3*10^8 (m/s). If a certain led emits red light of wavelength 650nm, how fast would it have to be moving in order for the light to appear yellow that is 600nm? Would it need to move toward or away from the observer?
The surface is frictionless. The mass m has a velocity 6.12 m/s. When it strikes the very light plate that is attached to the spring with force constant k = 23.1 N/m, the spring is compressed a distance s = 5.69 cm. Find the mass m in grams. Warni..
An image of a 5 centimeter tall object is formed on a screen 20 centimeter away from a thin lens. Obtain how far away from the lens is the object
Determine the thermal energy dissipated from brakes in a 1600 kilogram vehicle that descends a 20 degree hill
White light is shone on a very thin layer of alcohol (n = 1.36), and above the alcohol layer, interference maxima for two wavelengths (and no other in between) are seen: one violet wavelength of 410 nm, and one red wavelength of 670 nm. What is the t..
A lab technician uses laser light with a wavelength of 640 nm to test a diffraction grating. How many lines per millimeter does this grating have
Structure Polar's acquisition problem as a decision tree and solve (using EMV criteria) for the optimal decision strategy for Polar.
Determine the enthalpy change and internal energy change of ammonia in J/mole, as it is heated from 350 K to 600 K, using the ideal gas heat capacity given by the Shomate Equation.
Imagine that you have a solid cylinder (M = 2 kg, R = 0.1m, I =12MR2) and have wound a very light wire around it many times. You then attach a block of mass m = 1kg to the end of the wire, and allow the block to fall (starting from rest), unwinding t..
You are eating lunch at your favorite café and you friend calls and says he wants to meet you. how long will your friend be driving before he meets you
In a needle biopsy, a narrow strip of tissue is extracted from a patient using a hollow needle. Rather than being pushed by hand, to ensure a clean cut the needle can be fired into the patient's body by a spring. Find the maximum speed of the needl..
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 405. When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 90 dB. What sound intensity level..
a laser positioned on a ship is used to communicate with a small two man research submarine resting on the bottom of a lake. How far is the submarine from the side of the ship
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