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A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and the current is 0.18 A. What is the value of the external resistor R? What is the internal resistance r of the battery? What is the energy dissipated in the battery's internal resistance in 2.1 minutes? When a second identical battery is added in series and the external resistor is R = 20 Ohms what is the resulting current?
Four charges Aq,Bq,Cq, and Dq (q = 5 x 10-07C) sit in a plane at the corners of a square whose sides have length d = 80.0 cm. A charge, Eq, is placed at the origin at the center of the square.
If the lumberjack now trots toward the other end of the log with a speed of 2.7 m/s relative to the log, illustrate what is the lumberjack’s speed relative to the shore?
With what minimum speed must you toss a 160 g ball straight up to hit the 10 m high roof of the gymnasium if you release the ball 1.60m above the ground? Solve this problem using energy.
A stream of protons and electrons are shot horizontally (from the left edge of the page to the right) with a speed of 1.2 x 10^6 m/s, What is the radius of the curvature and the direction for the curvature that each of these particles undergoes
A 3 kg block slides along a frictionless surface at 1.0 m/s. A second block, sliding at a faster 5.0 m/s, What is the mass of the second block
Consider a pair of charged parallel plates, each having an area of 5cm^2. what is the magnitude of the electric field in the space
Assume the following parameters: projectile speed = 20 m/s, air resistance, drag coefficient = 0.5, What is the maximum range of the projectile along the horizontal in the simulation in m
One generator uses a magnetic field of 0.185 T and has a coil area per turn of 0.0405 m2, What magnetic field should be used in the second generator
An event occurs at x′ =60m, t′ =8×10-8 sec in a frame S′ (with y′ =0, z′ = 0). The frame S′ has a speed of 3c/5 in the x direction with respect to frame S. The origins of S and S′ coincide at t = 0, t′ = 0. What are the spacetime coordinates of th..
How fast must the bat fly, v_b, to hear a beat frequency of 205 rm {Hz}.
The driver of a car wishes to pass a truck that is travelling at a constant speed of 20 meters per second. Initially, the car is also travelling at 20 meters per second and its front bumper is 24 meters behind truck's rear bumper.
A circuit containing a 8 H inductor has an alternating current supplied to it. If Irms is 5.6 A and Vp is 25 V, find the frequency of the signal
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