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Three resistors in parallel have an equivalent resistance of 15. Two of the resistors have resistances of 30 and 40?.
What is the resistance of the third resistor?
Express your answer to two important figures and include the appropriate units.
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 29m/s, the block hangs vertically down. But when the van maintainsthis same speed around an unbanked curve (radius = 165 m), the block swings..
A box of mass 2.1 kilogram is on a horizontal surface. Find the speed of the box after it has travelled a distance of 2.3 meter
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Consider a ring of radius R with the total charge Q spread uniformly over its perimeter. What is the potential difference between the point at the center of the ring and a point on its axis a distance 2R from the center
a 1000 mw power plant is operated for a year. it has a thermal efficiency of 32 and a utilization factor of 0.8. assume
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Consider a small, conducting sphere of 0.0010 kg mass. Extra electrons are placed on this sphere, How many electrons must be added to each sphere
An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.6 kg moves up and to the left at an angle of ?1 = 19.0° above the –x axis with a speed of v1 = 27.8 m/s
A parallel-plate capacitor is made by placing polyethylene ( =2.3) between two sheets of aluminum foil. The area of eachsheet of aluminum foil is 410 cm2, and the thickness ofthe polyethylene is 0.5 mm.
A child is pushing a merry-go-round. The angle through which the merry-go-round has turned varies with time according to ?(t)=?t+?t3, What is the initial value of the angular velocity
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