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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?
A capacitor is connected across the terminals of an ac generator that has a frequency of 424 Hz and supplies a voltage of 26 V. Find the capacitance of the second capacitor
A 600 gram particle (initially at rest at the origin) is subjected to a force of F=15i+20j (N) which pushes the particle along a track with a displacement described by s=3i+4j (m). calculate the average power produced by this force
An excellent laboratory vacuum has a pressure of 5.00 multiply.gif 10-18 atm, ow many gas molecules are there per cubic centimeter in such a vacuum at 290 K
A wedge of mass m=36.1 kg is located on a plane that is inclined by an angle ?=21.3 degrees with respect to the horizontal. A force F=302.3 N in the horizontal direction pushes on the wedge. The coefficient of kinetic friction between the wedge and t..
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
A Federation starship ( 2.10×106kgkg ) uses its tractor beam to pull a shuttlecraft ( 2.10×104kgkg ) aboard from a distance of 15.0kmkm away. The tractor beam exerts a constant force of 4.0×104N4.0 \times 10^{4}\;{\rm N} on the shuttlecraft. Both spa..
You are asked to design a spring thatwill give a 1050kg satellite a speed of 2.00 m/s relative to anorbiting space shuttle. What must the force constant of the spring be
You're driving at speed V0 when you spot a stationary moose on the road, a distance 'd' ahead. Find an expression for the magnitude of the acceleration you need
A ray of red light in air , 650nm, is incident on semicircular block of plastic n=1.51, Determine angle of reflection at first interface
A converging lens with a focal length of 88.0 cm forms an image of a 3.20cm -tall real object that is to the left of the lens. Where are the object and image located in relation to the lens
An empty capacitor is connected to a 11.9-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (κ = 2.2) is inserted between the plates. Find the magnitude of the amount by which the potenti..
When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.
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