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A cube of ice is taken from the freezer at -8.5°C and placed in a 104 g aluminum calorimeter filled with 309 g of water at room temperature of 20°C. The final situation is observed to be all water at 16°C. What was the mass of the ice cube?
When a person inhales, air moves down the windpipe at 15 cm/s. determine the pressure drop of the constriction
A solenoid made out of 3500 turns of a fine silver wire about a tube 1cm in radius has a potential drop of 3.2V at a current of 2A in the lab. What is the cross-sectional area of the wire
A mass m1 = 4.7 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string. What is the tension in the string as the block falls
Compare the Boltzmann distribution, the Bose-Einstein distribution, and the Fermi-Dirac distribution.
An object placed 2.6 meters in front of a mirror produces an inverted image of one half the size. find Is it convex or concave
A perfect negative index lens is used with a single molecule. How long time will it take to form a perfect image of themolecule with the ideal lens, and why?
An airplane reaches a velocity of 71.0m/s when it takes off. What is should its acceleration be if the runway is 1-km long.
Calculate the semimajor of a moon on a synchronous orbit around Mars. Express your answer in martian radii (Rmars) from the center of the planet. compare this distance with the orbits of phobos (at 2.76 Rmars) and Deimos (at 6.9 Rmars).
A projectile of mass m is fired from the surface of the earth at an angle a from the vertical, where a = 0.75 radians. Calculate the maximum height that the projectile will reach
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
A swimming pool 2.6 m by 1.0 m has a uniform depth of 2.0 m, What is the absolute pressure at the bottom of the pool
A piece of string 5.30 m long has a mass of 15.5 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120.0 cm.
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