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A small AC resistive heater can withstand 12.5 A before it is damaged. If the resistance of the heater is 18.0 omega,
a) Determine the maximum rms voltage that we can apply to the heater,
b) Find the resistive power of the heater at that voltage.
A transformer is designed to step down the 209 volts to 30 volts. If there are 446 turns on the input coil, how many turns should there be on the output coil
the 2.0 cm diameter coil has 25 turns and has a current flowing through it of 5 A. The magnetic field strength is .4 T. What is the emf due to the change in flux
An airplane goes North with an average speed of 100m/s, What is the plane's velocity relative to the ground
A stone, initially at rest, is dropped from the roof of a building. After 2.00 second it is dropped, a second stone is thrown straight down with an initial speed of 25 m/s. Determine the speeds of the two stones just before they hit the ground
A 66 N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, how long will it take the wheel to make one revolution? The system is released from rest and accelerates under the weight of m2.
A 92-kg fullback, running at 5.0 m/s, attempts to dive directly across the goal line for a touchdown. What is the velocity of the football players after the collision
An observer stands 23.1 meter behind marksman practicing at a rifle range. Calculate how far does each bullet travel before the observer hears the report of the rifle
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 187 m. Find the magnitude of the total force on the port
The star Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. find the orbital period of the planet of Cancri
find the minimum thickness for constructive interference of visible light with a wavelength of 595 nm.
A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. How much nonconservative work was done on the boy
A hydraulic jack is made by a small piston 1.3 cm in diameter that is utilized to move a large piston 6.1 cm in diameter. If a man can exert a force of 360 N on the small piston, how heavy a load can he lift by the jack?
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