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Two concentric metal spheres are found to have a potential difference of 646.0 V when a charge of 2.816·10-8 C is applied to them. The radius of the outer sphere is 0.188 m. What is the radius of the inner sphere?
A brick of mass 1.05 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.46 m. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can ha..
A hydraulic jack is made with a small piston 1.4 cm in diameter that is used to move a large piston 5.8 cm in diameter. how heavy a load can he lift with the jack
A cannon ball is fired at a wall located 450 meters away. The initial horizontal component of the balls velocity is 90 m/s and it's initial angle is 24 degrees. How long does it take for the ball to reach the wall
The transformer in the power supply for a computer's 500-GB external hard drive changes a 120-V input voltage, what is the current in the primary and secondary when the drive is in operation
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. How long will the melting take
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). How far is the object from the converging lens
A particular heat engine has a useful power output of 4.40 kW and an efficiency of 30.0%. The engine expels 7200 J of exhaust energy in each cycle. Find the energy taken in during each cycle
A golfer takes two putts to get his ball into the hole once he is on the green. What displacement would have been needed to get the ball into the hole on the first putt
A point charge q is situated between two infinate grounded parallel plates, at a distance x from one and a-x from the other. calculate the force on a charge q in the form of an infinite series
A sea breeze advects moist air over an area where atmospheric conditions are T = 20 degrees C and r = 0.70, and the surface is T = 5 degrees C. At what temperature will fog form?
q1. a power supply passing through a resistor is supposed to deliver 22-v dc at a max current of 150ma. the
A 40 ohm resistor and a 60 ohm resistor are connected in series to a 12 volt battery. What is the voltage difference across each resistor
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