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A piece of nichrome wire is embedded into a 1-kg block of ice at -10°C. A current of 3.0 amperes and a voltage of 12 volts is maintained in the wire. How long will it take to separate the wire from the ice?
The heating coil of a hot-water heater has a resistance of 20.0 and operates at 210 V. If electrical energy costs $0.080/kWh, what does it cost to raise 290 kg of water in the tank from 15 °C to 74° C.
an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 3.00 cos 3t + ? divide by 4, Find the period and amplitude of the motion
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. How much work is done by the rope on the sledge
Water at 2 kg/s is the working fluid in the power cycle shown below. Saturated liquid at 10 kPa enters the pump, What is the overall efficiency of the entire cycle
The pressure of a monatomic ideal gas () increases by a factor of 2.15 during an adiabatic compression. What is the ratio of the final volume to the initial volume
A ball is launched straight up with a speed of 15.13 miles per hour. What is the maximum height reached in meters
assume with the tight-binding framework that we need to consider only 1 wannier orbital from each site. the energy
An unknown piece of material with a mass of 5.1 kg and density of 1422 kg/m3 is suspended from a string, Determine the volume of the piece of material
A spring with spring constant 15N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its the mass of the ball
Water is pumped into a storage tank from a welldelivering 23.0 gallons of waterin 35.0 seconds through a pipeof 1.00 in.2 cross-sectional area. What is theaverage velocity of the water in the pipe as the water is pumpedfrom the well?
A NASA satellite has just observed an asteroid that is on a collision course with the Earth. With what speed will it hit the Earth's surface
If a container has a water level 20 cm above the base and you punch a hole in the side 12 cm high
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