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Consider an L-R circuit as shown in the figure. The battery provides 12.0 V of voltage. The inductor has inductance L, and the resistor has resistance R = 150 Ω. The switch is initially open as shown. At time t=0, the switch is closed. At time t after t=0 the current I(t) flows through the circuit as indicated in the figure.
What is the current I (t„) at a time after t=0 equal to three times the time constant?
A cannon fires a cannonball from the top of a wall at a speed of 91.05 m/s and an angle of 31.18 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
A ball is thrown straight up with a velocity of 18.0 m/s from the edge of the top of a building 30 meters tall. What is the balls velocity just before striking the ground
If the magnetic field in a traveling EM wave has a peak magnitude of 13.3nT, what is the peak magnitude of the electric field
two parallel plates have opposite charges and a distance between them measured to be 1.00 mm. the potential between the
If a 1.00 kg body has an acceleration of 8.29 m/s2 at 79° to the positive direction of the x axis, what is the net force in unit-vector notation
a load of 100lbs is applied to the lower end of a steel rod 3 ftlong and .20in in diameter. how much will the rod stretch
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. What is the ration of Energy before/Energy after
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
A race car starts from rest on the circular track of radius 455m. The car's speed increases at the constant rate of 0.480m/s2. At the point where magnitudes of the centripetal and tangential accelerations are equal.
Describe how you would construct two Gaussian surfaces to calculate the electric field: one outside the cylindrical shell, and the other between the shell and the wire, to apply Gauss'Law.
A 3.00-?F capacitor is fully charged by a 12.0-V battery. The two ends of this fully charged capacitor are then connected to the two ends of a 6.0-mH inductor, find the frequency of the resulting oscillations in the current
A sinusoidal wave of wavelength 1.67 m and amplitude 0.100 m travels on a string with a speed of 1.10 m/s to the right. Find the angular frequency for this wave
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