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Charging a capacitor In a lab, a student is charging a capacitor over a resistor as given in the figure with R=8x105 W, ?=12 V and C=5 mF. The student closes the switch and measures the charge stored in capacitor and the current on resistor as a function of the time. What values (the charge on the capacitor and the current on resistor) the student will measure at t=2 s?
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.50 m/s and an acceleration of +1.20 m/s2. How much time elapses before h..
If the microstrip patches described above are arrayed as a 100 × 100 array of patches, calculate the gain of the array and the maximum power density at a distance of 10 km
A small coin is placed on a flat, horizontal turntable. The turntable is observed to make three revolutions in 3.14s. What is the speed of the coin when it rides withoutslipping at a distance of 5.0 cm from the center of theturntable
If the car had been going 10m/s but had stopped in the same d = 167m distance, what would its acceleration have been.
What is its speed just before it strikes the ground and how long does the ball take to reach the ground?
An inductor, a capacitor, and a 64.0-? resistor are connected in series with an AC generator; the generator produces an RMS voltage of 90 V. what is the average power output of the generator
A 32.0 µF capacitor is connected to a 45.0 omegacap.gif resistor and a generator whose rms output is 30.0 V at 60.0 Hz. compute The phase angle for the circuit
The intensity of light from a 100-watt light bulb is about 1 =32/ad2. Find an expression for the sum of intensities of light from a 100-watt bulb and a 60-watt bulb.
A basketball (m = 0.64 kilogram) is dropped from rest. Just before striking the floor, the ball has a momentum whose magnitude is 3.3 kg•m/s. Find at what height was the basketball dropped
A 19.6 kilogram block is dragged over a rough, horizontal surface by a constant force of 75.7 Newton acting at an angle of 27.1o above the horizontal. Determine the magnitude of the work done by force of friction
A car travels due east with a speed of 48.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain with respect to the following reference frames
Assume that the earth is a uniform sphere and that its path around the sun is circular. Calculate the kinetic energy that the earth has because of itsrotation about its own axis. For comparison, the total energy used in the United States in one yea..
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