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I take 1.0 kg of ice and dump it into 1.0 kg of water and, when equilibrium is reached, I have 2.0 kg of ice at 0°C. The water was originally at 0°C. The specific heat of water = 1.00 kcal/kg×°C, the specific heat of ice = 0.50 kcal/kg×°C, and the latent heat of fusion of water is 80 kcal/kg. The original temperature of the ice was:
Sunlight, with an intensity of 681 W/m2, strikes a flat collecting surface perpendicularly and is totally absorbed. What is the force in micronewtons that acts on the surface
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 80 MW and lasts 4.1 ns. what is the total energy of the pulse
A gyroscope slows from an initial rate of 32.0 rad/s at a rate of . How many revolutions does it make before stopping
Two negative point charges are separated by 16 and feel a mutual repulsive force of 1.55. The charge of one is three times that of other.
A tube of radius 5cm is connected to tube of radius 1 cm as shown above. Water is forced through the tube at a rate of 10 liters/min. The pressure in the 5 cm tube is 1×10^5 Pa. The density of water is 1000kg/m3. Suppose that the water is no visco..
An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. how big should she try to make the nucleus
What does it means when I say that a light truck and a heavy truck have the same momentum, What is renewable energy
A car speeds past a stationary police officer while travelling 115km/h. The officer immediately begins pursuit at a constant acceleration of 10.20 km/h/s (note the mixed units), just as the driver passes the officer.
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. Find the index of refraciton for violet light in plastic
If linear momentum is conserved when there is no external force applied, how is angular momentum conserved
An RLC circuit is set up with a 350 mH inductor, a 6.8 mF capacitor and a 550 W resistor. Sketch the phasor diagram for this circuit
question1the pilot of the aircraft wishes to fly due west in a 48.5 kmh wind blowing toward the south. the speed of an
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