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kilograms of water are changeda from ice at 0c into liquid water at 0c andb from liquid water at 100c into steam at
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a student of weight 658 n rides a steadily rotating ferris wheel the student sits upright at the highest point the
in a head-on collision a car stops in 012s from a speed of 19ms the driver has a mass of 72kg and is fortunately
a vertical spring of spring constant 115nm supports a mass of 75kg the mass oscillates in a tube of liquid if the mass
a copper rod had an initial diameter of 40 mm and an initial cross-sectional area of pid24126 mm2 what was the rods
an object with mass 27 kg is executing simple harmonic motion attached to a spring with spring constant k280nm when the
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a man enters a tall tower needing to know its height he notes that a long pendulum extends from the ceiling almost to
a spring is hung from a ceiling and an object attached to its lower end stretches the spring by a distance d 680 cm
calculate the force of gravity on a 6929-kg mass at the earths surface the mass of the earth is 6e24 kg and the its
a gas is enclosed in a container fitted with a piston of cross-sectional area 0150 m2 the pressure of the gas is
the outer wall of a building is constructed from concrete blocks if the wall is 50 m long at 20 degrees celcius how
a 26 block of aluminum sits on the bottom of a tank of waterpart a how much force does the block exert on the bottom of
a circuit consists on an emf of 48 v a resistor with r 80 ohms an inductor with l 20 h and a switch all connected in
a weight lifter does a series of arm raises while holding a 750 kg weight her forearm including the hand starts out
a sealed tube 05 l in volume confines two moles of an ideal gas at a pressure of 2 atma what is the average kinetic
a traveling wave in a string of linear density 001 kg per meter is described by the wave function y 002 m sin50 radm x
a mass of 02 kg attached to a spring oscillates on a frictionless horizontal surface its motion is described by x 005
suppose 199 w of heat flows by conduction from the blood capillaries beneath the skin to the bodys surface area of 137
a heat engine produces 12000 w of power and operates at an efficiency of 21 what is the heat input to the
a horizontal magnetic field of 20times104 t is at an angle of 25 to the direction of the current in a straight
a the starter motor of a car engine draws an electric current of 420 a from the battery the copper wire to the motor is
a a d 440 mm diameter wire carries an electric current of i 134 a when the electric field is e 622times10-2 vm along