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To empty a flooded basement, a water pump must do work (liftthe water) at a rate of 2.00 kW. If the pump is wired to a 240-Vsource and is 84% efficient,
(a) how much current does it draw, and
(b) what is it's resistance?
A guitar string is 90.0cm long and has a mass of 3.17 g. From the bridge to the support post (=l) is 60.0cm, What are the frequencies of the fundamental and first two overtones
one container is filled with helium gas and another with argon gas. Both containers are at the same temperature. Which molecules have the higher Rms speed
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology, What is the radius of the arc of the teardrop at the top
A satellite 589 km above the earth's surface transmits sinusoidal electromagnetic waves of frequency 94.6 MHz uniformly in all directions, with a power of 24.0 kW. what average force do these waves exert on the panel
Twenty particles, each of mass m0 and confined to a volume V, have various speeds: two have speed v, FIND the pressure they exert on the walls of the vessel
You go to the playground and slide down the slide, a 3.0 meter long ramp at an angle of 36 degrees with respect to horizontal. How long does it take you to reach the bottom of the slide
A pendulum sweeps out an angle of 12.5° during its motion. How far does the pendulum bob (the ball at the end of the rope) travel
A 560 turn solenoid, 25 cm long, has a diameter of 3.0 cm. A short 18 turn coil is wound tightly around the center of the solenoid. what will be the induced emf magnitude in the short coil during this time
How much is the spring compressed?
A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 30 degree angle from the horizontal, at what initial speed must he throw the ball so that it goes through the basket without striking the back..
The water system in a town is designed by a careless engineer. He places the new water tower at the top of an extremely tall hill, Calculate the minimum height of the water level in the tower
A resistor, capacitor and inductor are connected in series to an ac source with a frequency of 30 Hz and an rms potential of 40 V. What is the resonance frequency for this circuit
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