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An ac series circuit has an impedance of 192Ω, and the phase angle between the current and the voltage of the generator isφ=-75 degrees. The circuit contains a resistor and either acapacitor or an inductor. Find the resistance R and the capacitivereactance XC or the inductive reactance XL,whichever is appropriate.
A 54kg sprinter, starting from rest, runs 60m in 7.0s at constant acceleration. What is the magnitude of the horizontal force acting on the sprinter? What is the sprinter's average power output during the final 2.5s
An LR circuit is constructed using a (10.0 +/- 0.1) ohm resistor and a (330 +/- 3) mH inductor. Determine the value of the time constant from the exponential fit
A light wave has a 660nm wavelength in air. Its wavelength in a transparent solid is 440nm. What is the speed of light in this solid
an electron is released from rest at a perpendicular distance of 8.2 cm from a line of charge on a very long
A fugitive tries to hop on a freight train traveling at a constant speed of 4.8. What is the distance traveled to reach the box car
A meter stick is supported on a fulcrum at the 39 cm mark. A 0.50 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
(a) What must the initial speed of the ball be if the pitch is to arrive at the batter exactly 1.00 m above the ground? (b) How long does it take the ball to reach the batter? (c) If there were no gravity, at what angle would the pitch have to be ..
two football players interact on the field. one moving toward the right is carrying the ball and wants to cross the
A typical scuba tank has a volume V of 10 liters. When fully charged, it contains compressed air at a pressure of 200 bars, or 2.0 x 10^7 Pa. What is the uncompressed volume of the air
The fundamental frequency of a closed pipe is 108 Hz. Find the next higher harmonic for this tube
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
A refracting telescope has an objective lens with a focal length of 2.30 m and an eyepiece with a focal length of 3.50 cm. by what factor is the angular size of an observed object reduced
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