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In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 33 500 V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.
A 100-W lightbulb has a resistance of about 12 ? when cold (20 ?C) and 140? when on (hot). Estimate the temperature of the filament
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 5900 V/m, Calculate the radius r of the path for a singly charged ion
For a series RLC circuit with resistance 5 KOhm, capacitance 100 picoFarad, and inductance 0.025 Henry, what are the natural and the free oscillation mode frequencies
Consider a heat pump which is used to cool down a home during the summer. Its coefficient of performance in cooling mode is 4.14. at what rate does it remove heat from the home
A 75.0 kg patient is running a fever of 105°F and is given an alcohol rub to lower the body temperature. determine the mass of alcohol necessary to lower the body temperature down to 102°F
A proton moves through a magnetic field at 25.9% of the speed of light. what is the magnitude of the magnetic force acting on the proton
The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. Find the peak magnetic field strength
A train is travelling up a 4.8^circ incline at a speed of 3.25m/s while the last car breaks free and begins to coast without friction.
Find the angle required to produce this alignment of . (Assume the pulleys are ideal.) Find out the magnitude of the force, that is applied to the femur in this case.
70 grams of water at 85°C are mixed with an equal amount of water at 15°C in a completely insulated container. How much heat is gained by the cold water
When driving west toward the Rocky Mountains, you see a peak 2.8 above the horizon. Your GPS gives your current elevation as 1500, Find the peak's elevation
A glass flask whose volume is 1000cm3 at a temperature of 0.500?C is completely filled with mercury at the same temperature. compute the coefficient of volume expansion of the glass
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