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Model the tungsten filament of a lightbulb as a black body at temperature 2 900 K. (a) Determine the wavelength of light it emits most strongly. (b) Explain why the answer to part (a) suggests that more energy from the lightbulb goes into infrared radiation than into visible light.
define the term linear mass density. also what is implied if it is assumed that the linear mass density of an object
Assume that sunlight at the surface of Earth has an average intensity of 1.15E+3 W/m2. Calculate the rms value of the magnetic field in the sunlight
Estimate the electric field needed to pull an electron out of an atom in a time comparable to that for the electron to go around the nucleus.
a cat is laying in front of a convex lens in such a way that his body is aligned to the optical axis of the lens its
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. obtain the work done on the jet by the catapult
q1. an aluminum pot cal 0.22 calg.k is heated to 320c. then an 80g ice cube at 0c isplaces in the pot it melts and is
A hot air balloon is ascending straight up at a constant speed of 5.70 m/s. When the balloon is 11.0 meter above the ground, Compute how far above ground level are these places
A 2800 kg car has 4 springs fitted into the front bumper, each with a spring constant k=10^5 n/m. The car slidess on an icy road and collides at 3m/s with a heavy tree and stops. The maximum acceleration felt by the seat-belted driver in terms of a..
A 0.80 kg framed picture hangs by a light wire on a nail. The 50 cm long wire is attached to both ends of the 40 cm wide picture frame, What is the tension in the wire
a jogger runs with a speed of 3.25 m s i. a direction. of 30.0 degrees above the x axisa. find the x and y components.
In a Mass Spectrometer, ions of a precisely selected speed are sent into a uniform magnetic field where they move along a semicircle, What is the mass of the ion
questiona status newtons first law of motion. b a 2-kg object is affecting horizontally with a speed of 4 ms. how much
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