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Ice at -10.0 °C and steam at 118 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 49.1 °C is present. Ignoring the container and the equilibrium vapor pressure of the liquid at 49.1 °C, find the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C°).
189.35 J of energy are transferred to a system in the form of heat while the internal energy decreases by 46.99 J
Two forces are applied to a car in an effort to accelerate it. The first force, F1 = 328 N, is applied at an angle α = 35° to the forward dashed line. The second force, F2 = 544 N, is applied at an angle β = 8° to the forward dashed line. (a) What is..
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 23 to 61 dB
A 430g football is lying on the ground, then is kicked and is moving at 25.00 m/s. If the period of the impact was 0.001 s, what was the average force on the ball.
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
What is the coefficient of kinetic friction
A heat engine runs in the cycle A to B to C and back to A. The pressure at C is 200 kPa. The volume at C is 20 liters.
A long wire is known to have a radius greater than 5.6 mm and to carry a current that is uniformly distributed over its cross section, What is the radius (in mm) of the wire
A 73.0 kg construction worker stands at the far end of the beam.What is the magnitude of the torque about the point where the beam is bolted into place .
A parallel plate capacitor (air filled) that is maintained at a 20.0 V potential difference between plates, Calculate the surface charge density, and the charge on each plate
A 6.50 g bullet moving at 726 m/s strikes a 590 g wooden block at rest on a frictionless surface. What is the speed of the bullet-block center of mass
A 99 kg man lying on a surface of negligible friction shoves a 71 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man need as a result.
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