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A 550- resistor, and uncharged 1.50-µF capacitor and a battery with an emf of 6.18 V are connected in series.
1) What is the initial current? in mA
2) What is the RC time constant? in s
3) What is the current after one time constant? in mA
4) What is the voltage on the capacitor after one time constant? in V
When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air, What laser beam intensity will produce such a field
A block of wood (Mblock = 5.2 kg) rests on a horizontal surface for which the coefficient of kinetic friction is 0.32. find the initial velocity of the bullet before impact
You have three light-bulbs in series. The first is 60W the next is 120W and the last is 240W. They are all at 120v. Which light-bulb has the highest resistance. I use the equation.P=I^2R and found the 240W to be the highest. This is wrong. Which ligh..
The nucleus of an atom consists of protons and neutrons (no electrons). A nucleus of a carbon-12 isotope contains six protons and six neutrons.
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. Find the size and the nature of the image
A 1.0 kg stone is being whirled at constant speed of 12 m/s in a circle, held on a frictionless horizontal surface with a steel wire which is horizontal. The wire is 4.0 m long and its radius is 1.0 mm. Discover the strain in the wire.
two converging lenses each of focal length 15.2cm are placed 40.9 cm apart and an object is placed 30.0 cm in front of
How long must a 0.60-mm-diameter copper wire be to carrya 0.50 {\rm A} current when connectedto the terminals of a 1.5 {\rm V} flashligh tbattery? What is the current if the wire is half the length inpart A?
a billiard ball moving at 5.60 ms strikes a stationary ball of the same mass. after the collision the first ball moves
The nonconservative wind and lift forces take the balloon up, doing +9.70 104 J of work on the balloon in the process. Illustrate at what height above the surface of the earth does the balloon have a speed of 7.20 m/s?
Tarzan swings through the jungle by hanging from a vine. Immediately after he steps off the branch, Find the Tarzan acceleration is zero or nonzero
A horizontal slingshot consists of two light, identical springs (with spring constants of 90 N/m) and a light cup that holds a 1-kg stone. Determine the system's total mechanical energy
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