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A 60-W light bulb consumes 60 W of electrical power. It radiates almost all of this power, some of it in the form of visible light and some of it in the form of heat. Find the intensity (W/m2 ) of the total radiated energy (light and heat) at a distance 4.1 m from the light bulb.
A 20kg box slides up a 12m long incline at an angle of 30 degrees with the horizontal. What is the change in gravitational potential energy
A certain ideal gas has a molar specific heat at constant volume CV = 7R/5. What is its molar specific heat at constant pressure
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 150 pm. What is the change in the electron's energy
To treat a burn on your hand, you decide to place an ice cube on the burned skin. How much heat is absorbed by the ice cube and resulting water
The distance from the center of a Ferris wheel to a passengerseat is 9 m. What centripetal acceleration does a passenger experience
A gymnast of mass 55.0kg hangs from a vertical rope attached to the ceiling. Calculate the tension T in the rope if the gymnast hangs motionless on the rope
A 60.0-kg runner expends 335 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
Some forms of cancer can be treated using proton therapy in which proton beams are accelerated to high energies, then directed tocollide into a tumor, killing the malignant cells. Suppose a protonaccelerator is 7.3 m long andmust accelerate proton..
How many conduction electrons are there in a 3.50 mm diameter gold wire that is 50.0 cm long
A musician plays a string on a guitar that has a fundamental frequency of 330.0 Hz. The string is 65.2 cm long and has a mass of 0.268 g. At what speed do the waves travel on the string
The sound level, ß, measured at a radius r = 11.00 meters from a point sound source that is emitting sound equally in all directions is 95.17 dB, what is the sound power emitted by the source
four balls each of mass m are connected by four identical relaxed springs with spring constant k. the balls are
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