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A 7.0-m-diameter garden pond holds 6.4 × 103 kg of water. Solar energy is incident on the pond at an average rate of 400 W/m2. If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm from 15°C to 25°C?
Determine the capacitance of a Teflon-filled parallel-platecapacitor having a plate area of 1.90cm2 and insulation thickness of 0.0100 mm. What is the maximum voltage that can be applied to the capacitor?
A rectangular fish tank measures 30 cm by 65 cm by 40 cm high. What is the total force of the water on the bottom
The security alarm on a parked car goes off and produces a frequency of 1020 Hz. The speed of sound is 343 m/s. At what speed are you driving
A 70.0-kg ice hockey goalie, originally at rest, catches a 0.150-kg hockey puck slapped at him at a velocity of 35.0 m/s. what would their final velocities be in this case
A series ac circuit consists of a voltage source of frequency f=60 Hz and source voltage amplitude 345 volts, a resistor of resistance R=335 ohms, what is the current amplitude in the circuit
A 9.0 V battery and three resistors are all connected in series. What is the potential difference across the third resistor
A fireman d = 49.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of ?i = 27.0° above the horizontal, at what height will the stream of water strike the building
The upward normal force exerted by the floor is 700 on an elevator passenger who weighs 720. What is the reaction force to weight of the passenger
The Earth has an electric field that points toward the center of the earth and that has a magnitude of 150 N/C. How much charge is needed for it to be suspended in the air
Two coils are close to each other. The first coil carries a current given by I(t) = 4.70 e%u22120.025 0tsin(120%u03C0t), What is the mutual inductance of the coils
For the motion along the inclined plane, should the maximum kinetic energy of the cart be equal to the potential energy of the compressed spring (under ideal conditions)?
Two blocks A and B of mass D and E respectively are kept in contact on a frictionless table. what is the force exerted by the expirimenter on A
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