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A certain lightbulb has a tungsten filament with a resistance of 19.5 ? when at 20.0°C and 142 ? when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here. Find the temperature of the hot filament.
A ball swings in a vertical circle at the end of a rope 1.40 m long. When the ball is 36.3° past the lowest point on its way up, Determine the magnitude of its radial acceleration
Space invaders land on earth. On the invaders' temperature scale, the ice point is at 25°I (I = invader), and the steam point is at 153°I.
An unknown nucleus has twice the volume of a nucleus with 62 nucleons. What is the atomic mass number of the unknown nucleus
A television set connected to a 120 outlet consumes 73 of power. How much current flows through the television
A mass m = 14 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.09, for a distance d = 7.9 m. What is the work done by tension before the block gets to the incline
The cable lifting an elevator is wrapped around a 1.0-m-diameter cylinder that is turned by the elevator's motor. How long does it take for the elevator to stop
The equation of a transverse wave traveling on a string is given by y = A sin(kx - ?t) . Data: A=11 mm, k=73 rad/m, ?= 280 rad/s. What is the amplitude? What is the frequency? What is the wave velocity? What is the wavelength? For the same wave, f..
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
A molecule consists of two atoms. How far from the first atom is the center of mass of the molecule
In a double-slit interference experiment, the wavelength is 477 nm, What is the linear distance between adjacent maxima on the screen
A dry cell does 7.5. J of work through chemical energy transfer 5 C between terminals of the cell. What is the electric potential between the two terminal.
A cyclist has a speed of 5.0 m/s when she begins to coast down a hill, Calculate the work done by gravity on the cyclist
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