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How many time constants must elapse for an initially uncharged capacitor in an RC series circuit to be charged to 98% ofits equilibrium charge?
A point charge q is situated between two infinate grounded parallel plates, at a distance x from one and a-x from the other. calculate the force on a charge q in the form of an infinite series
Incident light in air impinges on a diamond. If the angle of the incident ray is 60°from the normal find the angles of the reflected and refracted rays. The speed of light in adiamond is 1.23932x108m/s.
A 890 kgcar is at the top of a 30m-long, 2.5degreeincline. Its parking brake fails and it starts rolling down the hill. find the speed of the joined cars at the bottom of the incline
A 35.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 430 N. Find the child's speed at the lowest point
A 25-kg child is sitting on the seat of a swing 10 m long. Her father pulls the swing back until the swing makes an angle of 37 degrees with the vertical. The gain in potential energy of the child at this point is?
a a physicist on a planet orbiting the star zog measures the intensity of the radiation reaching her to be 1370 wm2. if
A typical capacitor in an MP3 player has C = 5 ?F. If a charge ±37 ?C is placed on the plates, what is the voltage across the capacitor?
An LR circuit is hooked up to a battery as shown in the figure, with the switch initially open. The resistance in the circuit is R=120Ω, the inductance is L=4.10H, and the battery maintains a voltage of E=49V. At time t=0 the switch is closed.
Net horizontal force due to rolling friction
A 0.250 kg ball attached to a string s being swung in a vertical circle, like a roller coaster doing a loop-de-loop, with a radius of 1.15 m. What is the minimum speed at the top of the circle to keep the string from going slack
A piece of aluminum with a mass of 2.0 kg and density of 2700kg/m^3 is suspended from a string and then completely immersed in acontainer of water. Determine the volume of the piece of aluminum
Find the minimum diameter of an l = 16.3 m long steel wire that will stretch no more than 7.39 mm when a mass of 343 kg is hung on the lower end
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