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When a resistor is connected across the terminals of an ac generator (112 V) that has a fixed frequency, there is a current of 0.500 A in the resistor. When an inductor is connected across the terminals of this same generator, there is a current of 0.400 A in the inductor. When both the resistor and the inductor are connected in series between the terminals of this generator, what are a) the impedance of the series combination and b) the phase angle between the current and the voltage of the generator.
You take the elevator to the roof of a midtown skyscraper that is 100 meters high. How far from the side of the buliding will it land
A block slides upward on a rough, vertical wall at constant velocity when a force F of 60 N acts on it at an angle ? = 60? to the horizontal. Determine the force of kinetic friction on the block
in what direction must storm now sail to reach. The car is uniformly accelerated during the entire time. What net force is exerted on it.
a hot-air balloon is ascending at the rate of 11 ms and is 59 m above the ground when a package is dropped over the
When a mass is suspended from a spring, the equilibrium length is increased by 50mm. Find the period and amplitude of the resulting oscillations
The corners of an equilateral triangle lie on a circle that has a radius of .25m. What is the length of a side of the triangle
Point charges q1 = -4.10 nC and q2 = -4.10 nC are separated by distance 3.00 mm, forming an electric dipole. What is the direction fo the dipole moment
an infinitely long line of charge has a linear charge density of 4.50times10-12. a proton is at distance 15.5 from the
The place you get your hair cut has two nearly parallel mirrors 7.00 apart. As you sit between these mirrors in the chair, your head is 2.50 from the mirror in front of you. How far away does the back of your head appear to be
A space heater, operating from a 120V line, has a hot resistance of 14Ω. At what rate electrical energy transfered into heat
A winter hiker's body generates heat at a rate up to an utmost value of 126 W. She is hiking on a brisk day in which the outdoor temperature is 9 °C, whilst wearing a jacket with goose down insulation.
A scaffold supports a weight of 500 lbs. If the force in one end support is 150 lbs, how much force is supported by the other end
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