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The voltage across a 65uF capacitor is described by the equation vc=(18V)cos(200t), where t is in second.
a) What is the voltage across the capacitor at t=0.015 s? Please include appropriate units.
b) What is the capacitive reactance? Please include appropriate units.
c) What is the peak current? Please include appropriate units.
What does the term "disproportionate minority contact" mean? How does disproportionate minority contact play out in the juvenile justice system?
Presume that the range of output frequencies is from 68.5 Hz to 15.7 kHz for a pipe organ. Take 343 m/s for the speed of sound. What is the length (in units of m) of the longest pipe open at both ends and producing sound at its fundamental frequency?
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
A train is moving parallel and adjacent to a highway with a constant speed of 23 m/s. Initially a car is 57 m behind the train, What is the speed of the car just as it passes the train
The output voltage of an AC generator is given by Δv= 780 V sin (30πt). The generator is connected across a 0.900 H inductor.Find the following. frequency of the generator. rms voltage across the inductor. inductive reactance. rms current in the in..
A uniform rod (L= 3 m) and mass (M = 1 kg) is pivoted about a horizontal frictionless pin through one end. What is the angular speed of the rod when it passes through the vertical position
Water from a garden hose that is pointed 28 degree above the horizontal lands directly on sunbather lying on the ground 3.9 meter away in the horizontal direction. compute at what speed does the water leave the nozzle
A firefighter mounts the nozzle of his fire hose a distance 40.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. By what factor was the nozzle diameter changed
A 2kg box is released, from rest, at the top of a rough circular track of radius 10cm. calculate the work done by all resistive forces
A car traveling at a constant speed of 21.5 m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.10 m/s2. How long does it take the ..
An alert physics learner stands beside the tracks as a train rolls slowly past. obtain the speed of the train
An unknown element is found to have an absorption spectrum with lines at 3.0, 7.0, and 9.0eV, and its ionization energy is 10.0eV. If a 9.0eV photon is absorbed, what energies can the subsequently emitted photons have?
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