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The current in an RL circuit drops from 0.80 A to 13 mAin the first second following removal of the battery from thecircuit. If L is 12 H, find the resistance R inthe circuit.
q1. a wheel 45.0 cm in diameter accelerates uniformly from 206rpm to 340 rpm in 7.0 s. how far will a point on edge of
the numerical value of the angular velocity of rotation of the earth should be rads in order to make the effective
A 400 ohm resistor and a 6.00 uf capacitor are connected in parallel to and AC generator that supplies a voltage of amplitude 310 V at an angular frequency 57.3 Hz. Find the current amplitude in the resistor.
A horizontal spring, with spring constant k, has a mass, m,attached to it and is vibrating horizontally on a friction less surface. Which one of the following statements is CORRECT?
A 22 child slides down a 2.4 -high playground slide. She starts from rest, and her speed at the bottom is 1.9 What is the change in thermal energy of the seat of her pants?
A rope exerts a constant horizontal force of 250N to pull a 60 Kg crate across the floor.
What is minimum important in returning blood to the heart? Negative intrathoracic pressure, valves and veins, the pumping action of skeletal muscles, or the pushing of blood by arterial system.
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
A potter's wheel is rotating at 3.2 rad/s in a counterclockwise direction when the potter turns it off and lets it slow to a stop. This takes 26 seconds. What is the average angular acceleration of the wheel during this time?
Driving home from school one day you spot a ball rolling out into the street. You brake for 1.10 s, How far did you travel while braking
Suppose a neutrino is created and has an energy of 49.0 MeV. (a) Assuming the neutrino, like the photon, has no mass and travels at the speed of light, find the momentum of the neutrino. (b) Determine the de Broglie wavelength of the neutrino.
A 64 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.15. What would be the magnitude of acceleration.
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