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Question: The force (but not the power) required to tow a boat at constant velocity is proportional to the speed. If a speed of 3.3 km/h requires 6.6 kW, how much power (in kilowatts, kW) does a speed of 8.8 km/h require?
You rub an inflated balloon on the carpet andit acquires a potential that is 1500 V lower than its potential before it became charged. If thecharge is uniformly distributed over the surface of the balloon andif the radius of the balloon is 13.0 cm..
Wire 1 and 2 are made of the same metal. What is the ratio p2/p1 of the resistivities of the two wires
What gauge pressure must a pump produce to pump water from the bottom of the Grand Canyon (elevation 730 ) to Indian Gardens (elevation 1370 )
A circular coil enclosing an area of 180 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 9.0 ?, what is the average current in the coil during that time
An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10.0°C. Determine the specific heat of the unknown sample
A 150g copper bowl contains 220 g of water, both at 20.0degrees C. A very hot 300g copper cylinder is dropped intothe water, What is the original temperature of the cylinder
An Electronic lift can raise a 216 kg mass a distance of 25.7 m in 5.0 seconds. What was the work done by the lift
An uncharged capacitor and a resistor are connected in series to a source of EMF. If E = 3.63 V, C = 19.6 uF, and R = 119 ohm, Calculate the maximum charge on the capacitor
The air around a spinning 142g baseball (below) of radius 3.55cm experiences a faster speed on the left than the right side, determine the pressure difference between the right and left sides of the ball
A 36.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
A light bulb is wired in series with a 133-? resistor, and they are connected across a 120-V source. What are the two possible resistances of the light bulb
A ball thrown horizontally at 28 m/s travels a horizontal distance of 55 m before hitting the ground. From what height was the ball thrown
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