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Three 15-? resistors are connected in parallel. This arrangement is connected in series with a 10-? resistor. The entire circuit is then placed across a 45-V battery.
a) What is the effective resistance of the parallel portion of the circuit?
b) What is the effective resistance of the entire circuit?
c) What is the current in the entire circuit?
d) What is the voltage drop across the 10-? resistor?
e) What is the voltage drop across the parallel portion of the circuit?
f) What is the current in each branch of the parallel portion of the circuit?
A total of 26 bright and 26 dark Newton's rings (not counting dark spot at the center) are observed when 540 light falls normally on a planoconvex lens resting on a flat glass surface.How much thicker is the center than edges.
on turning a corner ,a motorist rushing at 44m/s find a child on road 100m away. he applies the brakes so as to stop the motorcar within 1m of child. calculate the time required to stop.
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign.
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
Which physical parameter, more than any other, most probably controlled the early evolution of the planetary system and dictated the characteristics of the planets that eventually formed?
The satellite has an orbital period around the Earth that is the similar as that of the Moon, 27.3 days. How far away from the Earth must this satellite be placed.
A Geiger counter consists of a tube of radius r and legnth L centered around a positively charged filament of equal length. What answer do you get for the linear charge density of the filament if you approximate its length to be infinite
An apple is dropped from a 25m cliff. At the similar time, a person at the bottom of the cliff fries an arrow up towards the apple. The arrow sticks the apple 0.450 seconds later.
An x-ray tube is operated at 45000 V. Find the minimum wavelength of the radiation emitted by this tube
A ball of mass 2.4 kg hangs at the end of a string 1.4 m in length from the ceiling of a room. What is the gravitational potential energy of the ball relative to the floor
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