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when gasoline is burned it gives off 46000 jgram of heat energyif an automobile uses 16 kg ofgasoline per hour with an
a ball of mass 0150 kg is dropped from rest from a height of125m it rebounds from the floor to reach a height of 0960m
a paperweight when weighed in air has a weight of w 69nwhen completely immersed in water however it has a weight of
a 270 n sphere 020 m in radius rollswithout slipping 60 m down a ramp that is inclined at 31deg with the horizontal
an object moving in simple harmonic motion has an amplitude of005 m and a maximum acceleration of40 ms2 what is the
a rocket is launched straight up from the earths surface at aspeed of 16times104 ms what is its speed when it is very
a 5 gram bullet traveling in 20 0c air at 300 msstrikes a flat steel plate and stops what is the final temperatureof
a cart of mass 250 g is placed on africtionless horizontal air track a spring having a springconstant of 90 nm is
if a large lake is held back by a dam that is equallylong and equally deep compared to another body of water but is
while standing at a crosswalk you hear a frequency of540 hz from an approaching police carafter the police car passes
an aircraft carrier has a speed of 130 ms relative to thewater a jet is catapulted from the deck and has a speed of670
a 30-m-long ladder leans against a frictionless wall the coefficient of static friction between the ladder and the
a large turntable rotates about a fixed vertical axis makingone revolution in 800 s the momentof inertia of the
a 60 cm diameter horizontal pipe gradually narrows to 40 cmwhen water flows through this pipe at a certain rate the
two identical mandolin strings under 200 n of tension are soundingtones with frequencies of 455 hz thepeg of one string
a girl and her bicycle have a total mass of 35 kg at the topof a hill her speed is 5 ms the hill is 14 m high and 100
the bottom of a flat bottom aluminum boat has an area 4 msquared and the mass of the boat is 80 kg if two fishermen
mars is 228 x 1011 m from the sun on average at what minimum speed would it escape from the sun
the mysterious planet x has a radius of 550 x 106 mand an acceleration due to gravity of 130 ms2 at its surface
the position of a hydrogen atom m17x10-27 isknown to within 20x10-6m what is the minimumuncertainy in the atoms
a car drives straight off the edge of a cliff that is58 m high the police at the scene ofthe accident note that the
in 2000 nasa placed a satellite in orbit around an asteroidconsider a spherical asteroid with a mass of 700times1015 kg
a 0360 kg pendulum bob passes throughthe lowest part of its path at a speed of 380 msa what is the tension in the
in the reaction given below for every 12 molecules of aluminum oxide consumed how many molecules of oxygen are produced
calculate the molarity of a sodium hydroxide solution if a 07216 g sample of khp was dissolved in 50 ml of water and