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A 12µF capacitor is connected by a switch to a 100 volt DC supply via a 20? resistor. Assume the capacitor is initially uncharged. Calculate:
a. The TIME constant
b. The INITIAL current at the moment of closing the switch
c. The TIME for the current to fall to 3 amps
d. The TIME for the voltage of the fully charged capacitor to fall to 70 volts. (The capacitor is discharged through a 20 ? resistor)
e. Sketch the growth of voltage across the capacitor against time
two narrow slits 0.328 mm apart are illuminated by light of wavelength 600. nm. the light falls on a screen 1.58 m
Oppositely charged parallel plates are separated by 5.26 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field strength between the plates?
For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 11.3 m/s, How high will be the highest point of trajectory
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the orbital period of the faster planet, in years
Estimate the boiling point of a 0.6 molal solution of NaCl in water, What is the osmotic pressure of a 100 mL of toluene solution that contains a total of .005 moles of a polymer dissolved in it at 25°C
The magnetic field of an electromagnetic wave has a peak value of 5.0 × 10-10 T. What is the intensity of the wave? (c = 3.0 x 108 m/s, c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, u0 = 8.85 × 10-12 C2/N ? m2)
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
The box of a well-known breakfast cereal states that one ounce of the cereal contains 128 Calories (1 food Calorie = 4186 J). what is the heaviest barbell that could be lifted a distance of 2.08 m
By how much does the air pressure in a house increase if the house is sealed and the air temperature increases from 12.2° C to 19.1° C
A ball on the end of a string is revolved at a uniform rate in a vertical circle of a radius 72.0 centimeter. Find the tension in the string when the ball is at the bottom of its path
A 354.7 gram rubber ball is dropped from a height of 26.17 meter and undergoes a perfectly elastic collision with the earth. Find what is the earth speed after the collision
A satellite with a mass of 310 kg moves in a circular orbit 3.00 107 m above the Earth's surface. What is the gravitational force on the satellite
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