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AnRL circuit has an emf source of 13V, a resistor, a 20 H inductor,and a switch. If the emf across the inductor is 80% of its maximum13V 3 s after the switch is closed, what is the value of the resistor?
A hospital orderly pushes horizontally on two boxes of equipment ona rough horizontal floor, as show in figure 4.38. Make a free-bodydiagram of each box if the force applied to the 50lb boxis 115N and each box experiences frictional forces of 8.2N.
A basketball star covers 2.6 m horizontally in a jump to dunk the ball. His motion through space can be modelled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02m when he leaves the floor. It reaches a..
A 20,000 ohm resistor and a capacitor are connected in series and then a 15v potential differnce is suddenly applied across them. what is the capacitive value of the capacitor
suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of 2.70 pc.a what percentage of the
A long string is wrapped around a 6.60 diameter cylinder, initially at rest, that is free to rotate on an axle. The string is then pulled with a constant acceleration of 1.70 until 1.30 of string has been unwound. If the string unwinds without slippi..
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 . Ignore air resistance. A flea jumps straight up to a maximum height of 0.520 . What is its initial velocity as it leaves ..
A steady current 1.5 amps flows in a wire out of the page. A small +4 uc point charge is 5 can away from wire, What is the magnetic force acting in the charge
In order to convert a tough split in bowling, it is necessary to strike the pin a glancing blow, Calculate the final speed of the pin
A luggage lock, like the one shown above, has a 3-digit combination set with 3 dials, each of which has 10 settings (0-9), What is the probability of dialing the correct combination in one try by chance?
A circular wire loop of radius 0.50 m lies in a plane vertical to a uniform magnetic field of magnitude 0.40 T. If in 0.10 s the wire is reshaped from a circle to a square, but remains in the plane, what is magnitude of the average induced emf in t..
for a particle in a cubical box and in its ground state given an accurate estimate of the probability for finding the
What is the greatest mass that can be accelerated upwards at 2.9 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, that is 2.2 108 Pa.
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