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A 117 V potential difference isapplied to a space heater that dissipates 500 W during operation.
(a) What is its resistance during operation?(b) At what rate do electrons flow through any cross section of theheater element?
A toy cork gun contains a spring whose spring constant is 10.02 N/m. The spring is compressed 5.0 cm and then used to propel a 6.00 g cork. The cork, however, sticks to the spring for 1 cm beyond its unstretched length before separation occurs. The m..
A balloon of volume 4.3 m3 contains argon gas at a pressure of 2.0 105 Pa and room temperature (20°C). What is the total internal energy of the gas
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
An ion has a mass of 3.74 x 10-26 kg and a charge of+6e. What is the magnitude of the electric field that will balance the gravitational force on the particle?
A truck starts out at position x = 2.7 mi and y = 5.4 mi and winds up at position x = 4.5 mi, y = 2.2 mi. The truck made the displacement in 11 minutes. Find the average velocity of the truck in miles per hour
Newton's law of gravity states that the force on an object by the Earth follows an inverse square law: 0 2 E g m m F G x ? ? where G is a constant (the universal gravitational constant), How much work is done moving the object from x ? ? to x ? R
What is the angular frequency in rev/s of combination.
A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?
Two long, parallel wires, each with the mass per unit length of 43 g/m, are supported in a horizontal plane by 6-cm long strings. Each wire carries the similar current, I, causing the wires to repel each other so that the angle, θ, between the sup..
What is the mass in kg of the air in a scuba tank that has an internal volume of 0.01 m3 and it is pressurized o that the density of the air in the tank is 240 kg/ m3
a cup of water is heated with a heating coil that delivers 10.36W of heat. in 14.89 minutes, what is the mass of the water
Four resistors 10 ohms , 16 ohms , 22 ohms , and 38 ohms are in parallel. Find the current in each resistor when the parallel combination is across a 6.0 V battery
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