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A resistor and an inductor are connected in series across an AC voltage source oscillating at 60 Hz . The rms voltage across the resistor is 15 V and the rms voltage across the inductor is 20 V. What is the rms voltage of the source? Please explain/show work.
A cannon is fired horizontally with a velocity of 35.0 m/s from a height of 10 meters. With what total velocity does it strike the ground
2.00 moles of an ideal gas is at a pressure of 1.50 atmospheres, What is the average kinetic energy per particle in the gas
In a cathode-ray tube electrons are projected horizontally at 1.5x10^6m/s and travel a horizontal distance 11.0cm across the tube. How long are the electrons in flight? Find the vertical distance the electrons fall (under the influence of gravity) du..
You're listening to a loudspeaker with an initial output of 50 watts, and someone turns it up to 100 watts. Will the music sound more than, less than, or exactly twice as loud as before?
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 60 cm above the ground at an angle of 80' with respect to the vertical. Is ball on its way-up or down when the ball strikes the wall?
The aluminum cable of a high-voltage transmission line carries a current of 600 A. What is the power lost to Joule heating in this cable
A spherical metallic Christmas tree ornament has a diameter of 6.20 cm. If Saint Nicholas is by the fireplace, 1.41 m away, where will he see his reflection in the ornament
Antennas for radio transmission and reception are particularly effective if they're about a half-wavelength long. What's the appropriate length for an FM antenna
A construction company is trying to select a concrete brand for laying down a foundation. Which brand of concrete can withstand the higher stress level
An electromagnetic wave in vacuum has an electric field amplitude of 405 V/m. Calculate the amplitude of the corresponding magnetic field
A box of sand, initially at rest, is to be pulled across a floor by means of a cable in which the tension cannot be allowed to exceed 1100N. What should be the angle between the cable and the box in order to pull the greatest mass of sand
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. How far apart are the clock tower and the building
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