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A person makes a quantity of iced tea by mixing 500g of hot tea (basically water) with an equal mass of ice at its melting point. Suppose the mixture has negligible energy exchanges with its environment. If the tea's initial temperature is Ti = 90 degrees Celsius, when thermal equilibrium is reached what are (a) the mixture's temperature Tf and (b) the remaining mass mf of ice? If Ti = 70 degrees Celsius, when thermal equilibrium is reached what are (c) Tf and (d) mf?
The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m at an angle of 20, B = 11.0 m at an angle of 90, C = 12.0 m at an angle of 35, and D = 17.0 m at an angle of 90. Determine the directional angle for the resultant tha..
A constant horizontal force moves a 50 kg trunk 7.0 m up a 26° incline at constant speed, What is the increase in the thermal energy of the trunk and incline
A particle rotates in a circle with a centripetal acceleration of 9.81 meters per second squared. what is the new centripetal acceleration in terms of the original value
Two objects moving toward each other collide and rebound. Determine the change in kinetic energy of the smaller object
Medical technicians use small centrifuges to isolate blood cells. How far are the test tubes from the rotation axis
A 44.7-kilogram object is pulled 7.5 meters along a horizontal surface with a 130-Newton force at 28o above horizontal. What is the net work done on the object
a demonstration gyroscope consists of a uniform disk with a 38-cm radius mounted at the midpoint of a light 59-cm axle.
A Polonium nucleus (m1 = 210 amu) at rest emits an alpha particle (m2 = 4 amu) to the right as a result the nucleus travels to the left at 350 km/s. What is the speed of the alpha particle
A box weighs 190 N on earth., What is its mass (kg) on Jupiter and What is its weight (N) on Jupiter where free-fall acceleration is 25.9 m/s^2
A small pistol fire a 1.5g bullet at 1000 m/s. The bullet strikes a 200g wooden block resting on a horizontal frictionlessl surface, What is the speed of the bullet &block system after the bullet had been embedded in the block
A simple harmonic oscillator takes 12.0 s to undergo six complete vibrations.
A wildlife biologist tracks an elk over flat terrain by following the emissions from a radio collar worn by the animal. If the elk travels 3.0km at an angle of 30 degrees East of North, followed by 2.0km at 40degrees West of North, and finally a 4..
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