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A thermos contains 154 cm3 of coffee at 93.5 °C. Tocool the coffee, you drop two 12.7-g ice cubes into the thermos.The ice cubes are initially at 0 °C and melt completely. What is the final temperature of the coffee in degrees Celsius? Treatthe coffee as if it were water.
given a sargent ideal gas cycle. All process ar quasi-static, and the heat capacities are constant. Prove that the thermal efficiency of an engine performing a cycle
Find out h orizontal angle of projectile
A cube of unknown material which is 1 m on a side is observed to float in fresh water with 30% of the cube exposed above the water line. how much of the cube (in percent) is above the water line
A sample containing carbon, oxygen, and an unknown element isplaced in a mass spectrometer. What is the mass of the unknown element
Explain the changes in acceleration, velocity, and net acceleration Of a man jumping off a plane in a parachute. Describe the changes with valid scientific principles.
A 10.0 g lead bullet at 23 degrees C slames into a stone wall. Assuming no loss of energy to the environment, how fast must the bullet be traveling
The left end of a long glass rod is 8.00 cm in diameter, with an index of refraction of 1.60, is ground, Find the position of the image of the arrow formed by paraxial rays incident on the concave surface
Leigh is doing a knee extension exercise using a 100 N weight strapped to her ankle 40 cm from her knee joint. For this position, what torque is created by the dumbbell about her knee joint axis
A potter's wheel having a radius 0.45 m and a moment of inertia of 11.4 kg · m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 74 N. Find the effe..
a 2598.79 lbs. go cart and driver rounds a curve. If the centripetal force on the go cart and driver is 1250 lbs. What is the radius of the curve
Two identical 0.11 kg blocks (labeled 1 and 2) are initially at rest on a nearly frictionless surface, connected by an unstretched spring, how far did the center of mass of the real system move
The centers of a 11.0kg lead ball and a 150g lead ball are separated by 7.00cm. What gravitational force does each exert on the other
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