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a vw beetle goes from 0 to 990 mih with an acceleration of 390 ms2a how much time does it take for the beetle to reach
dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high
a 120 kg mass is attached to a light cord that is wrapped around a pulley of radius 365 cm which turns with negligible
a woman once survived a fall of over six miles without a parachute when her plane exploded suppose a hapless individual
a 30 mc point charge sits at the center of a spherical thin metallic shell of 50 cm radius the shell has a charge of
a sphere of radius r starts from rest and rolls without slipping along a curved surface dropping through a vertical
a a lightweight electric car is powered by ten 12-v batteries at a speed of 70 kmh the average frictional force is 1050
a car with a total mass of 152 103 kg has wheels of radius 335 cm and moment of inertia 0835 kg middot m2a find the
a box of mass m is released from rest and slides down a 3 m high frictionless chute at the bottom is a motionless box
three uniform spheres are located at the corners of an equilateral triangle each side of the triangle has a length of
three blocks with masses m15kg m210kg and m37kg are connected by two pieces of very light strings the system is being
a 40 g block of ice is cooled to -78degc and is then added to 550 g of water in an 80 g copper calorimeter at a
a suppose that you have a 390 a 780 and a 220 k resistor what is the maximum resistance you can obtain by combining
a student sits on a swivel seat initially the student is at rest holding a spinning bicycle wheel that has an angular
a the electric starter in an automobile equipped with a 12 v battery draws a current of 9000 a when in operation
a 460 kg block of ice at 0degc is added to an insulated container partially filled with 106 kg of water at 150degca
the density of charge-carrying electrons in copper is 85 times 1028 electrons m3 its resistivity is 172 times 10-8
an object is placed 126 cm in front of the cornea the cornea is thin ans has approximately parallel sides so that the
a satellites are placed in a circular orbit that is 364 times 107 m above the surface of the earth what is the
the cheetah can reach a top speed of 114 kmh 71 mih while chasing its prey in a short sprint a cheetah starts from rest
a 47-kg bungee jumper has fallen far enough that her bungee cord is beginning to stretch and resist her downward motion
a train 350 m long is moving on a straight track with a speed of 848 kmh the engineer applies the brakes at a crossing
runner a is initially 30 mi west of a flagpole and is running with a constant velocity of 30 mih due east runner b is
a car starts from rest and travels for 50 s with a uniform acceleration of 23 ms2 the driver then applies the brakes
a major-league pitcher can throw a ball in excess of 415 ms if a ball is thrown horizontally at this speed how much