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(a) What is the surface temperature of Betelgeuse, a red giant star in the constellation of Orion, which radiates with a peak wavelength of about 970 nm?
K
(b) Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature of Rigel's surface.
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
A diffraction grating has 3283 lines/cm. Light that contains all wavelengths between 480 and 659 nm shines on the grating
Explain how the process of "doping" a semi conductor can improve its overall efficiency. Why does "doping" require a clean room infrastructure
Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. Find the ratio of the wave speeds
Suppose we have a solid with a constant volume consisting of N particles. find the number of microstates
On a particular afternoon in Houston, the nitrogen (N2) molecules in the air have an rms speed of 511 m/s. What is the rms speed of the carbon dioxide (CO2) molecules
Household wiring made of aluminum wire with cross-section area 3.1 x 10^-6 m^2 carries a current of 4.5 A. what is the power loss over 5.2 m of wire
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the Empire State Building. Before the state legislature votes on funding for the project, they would like you to prepare a report on the benefits..
A wave has the following properties: amplitude = 0.37 m, period = 68 s, wave speed = 13 m/s. What is the mathematical expression (similar to one of the following equations) for the wave
Derive the speed of a satellite in a circular orbit of radius R about planet of mass M, show the connection between v and T (orbital period)
What is one experiment you could to show light is a particle. Clearly delineate how the results show it is a particle, and do not fit with the expectations of the experiment if it was a wave.
A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
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