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Two identical batteries of emf ε = 9.17 V and internalresistance r = 0.279 Ω are to be connected to an external resistance R, either in parallel (Fig.27-52) or in series (Fig. 27-53). If R = 0.251Ω, what is the current i (in A) in the external resistance in the (a) paralleland (b) in the series arrangements?
An airplane travels a distance 270 m down the runway before taking off. If it starts from rest, moves with a constant acceleration, what is its speed when it takes off
q1. while exploring a cave a spelunker starts at the entrance and move the lowing distances. she goes 75.0m north 250m
A neutron star is composed of neutrons and has a density that isapproximately the same as that of a nucleus. What is the radius of a neutron star
If the balls are released from a height where the bottom of the basketball is at 0.781m above the ground, what is the absolute value of basketball's momentum just before it hits the ground.
A motor is designed to operate on 131 V and draws a current of 12.2 A when it first starts up. What is the resistance of the armature coil
The two hot-air balloons in the drawing are 48.2m and 61.0 m above the ground, What is the horizontal distance x between the two balloons
A 10-cm length of wire carries a current of 3.0 A. What is the magnitude and direction of the force on this segment of wire
A cubical box is 0.82m on a side. What is the volume of the box, as measured by this observer
assess the benefits brought about by the application of lean techniques at wiremold. explain your answer by describing
A layer of oil, with a refractive index of 1.40798, 0.97483 mm thick, How many wavelengths are contained in the light wave passing back and forth through the oil
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 790-kg car traveling with a velocity of +2.40 m/s. What is the final velocity of each vehicle
A high powered 20.0 megawatt laser of beam diameter 6.00cm hits 100% absorptive, find how far the disk moves before the laser momentarily stops its motion
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