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An idealized voltmeter is connected across the terminals of a battery while the current is varied. Figure 25.34 shows a graph of the voltmeter reading Vas a function of the current I through the battery. Find
(a) The emf E and
(b) The internal resistance of the battery.
The displacement vectors 46.0 cm at 15.0° and 23.0 cm at 53.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
You use a sequence of ideal polarizing filters, each with its axis making the same angle with the axis of the previous filter, What is the angle between adjacent polarizers
Sam fields a baseball hit to him in the left field. He then throws the ball to third to force out the base runner, Mike. How high in the air does the ball go
A 3.1kg block of wood sits on a table. A 3.0g bullet, fired horizontally at a speed of 370m/s, What is the speed of the block immediately after the bullet exits
q1. a 19 kg box slides 4.0 rm m down the frictionless ramp shown in the figure then collides with a spring whose
A disk, initially rotating at 106 rad/s, is slowed down with a constant angular acceleration of magnitude 2.24 rad/s2. How much time does the disk take to stop
In Young's double slit experiment, 422 nm light gives a third-order bright fringe at a certain location on a flat screen. What is the longest wavelength of visible light
Four railroad cars, each of mass3.00 x 104 kg, are coupled together and coastingalong horizontal tracks at speed vi toward thesouth. How much work did the actor do
a proton is released in a uniform electric field and it experiences an electric force of 2.8 multiplied by 10-14 n
On an exo-planet, a 70-kg astronaut steps on a scale and finds that the scale reads 246 N. A survival pack is dropped a distance 85 m to the ground. How fast will the survival pack be moving just before it hits the ground
A spacecraft that is initially at rest turns its engine at t=0. Ifits mass is m=3000kg and the force from the engine is 45N, what is the acceleration of the spacecraft?
In trying to move across a slippery icy surface, a 175-lb man uses two ropes AB and AC. Knowing that the force exerted on the man by the icy surface is perpendicular to that surface, determine the tension in each rope.
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