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david is running at a constant speed of 60 meters per second when he passes cindy who is at rest when david is 50
earthquakes at fault lines in earths crust create seismic waves which are longitudinal p-waves or transverse s-waves
tarzan swings on a 300-m-long vine initially inclined at an angle of 300deg with the verticala what is his speed at the
a child and sled with a combined mass of 550 kg slide down a frictionless slope if the sled starts from rest and has a
a 44-kg pole vaulter running at 11 ms vaults over the bar her speed when she is above the bar is 10 ms neglect air
an electromagnetic wave of wavelength 450 nm is traveling in vacuum in the -z direction the electric field has
the g string on a violin has a fundamental frequency of 196 hz it is 330 cm long and has a mass of 0500 g while this
a man enters a tall tower needing to know its height he notes that a long pendulum extends from the ceiling almost to
the internal energy of a system increases by 100 j while 800 j of work are performed on it what was the heat flow into
a 5-kg fish swimming 1 ms swallows an absent-minded 1-kg fish swimming toward it at a velocity that brings both fish to
if a mack truck with a mass mt 20000 kg and a honda civic with a mass of mc2000 kg have a head on collision and force
a thermometer containing 010 g of mercury is cooled from 140deg c to 81deg c how much energy was lost by the mercury in
it is a damp chilly day in a new england seacoast town suffering from a power failure to warm up the cold clammy sheets
a rocket of total mass 3160 kg is traveling in outer space with a velocity of 120 ms to alter its course by 385 degrees
an ideal gas is heated at a constant pressure of 200 105 pa from a temperature of -730deg c to a temperature of 25deg c
a bowling ball has a mass of 33 kg a moment of inertia of 0076032 kg middot m2 and a radius of 024 m it rolls along the
a board of mass 20 kg and length 4 m is supported by two scales one a t the left end of the board and the other at 3 m
the masses of the pluto and charon are 131times1022 kg and 152times1021 kg respectively and their centers are separated
if a 25-gram bullet with a speed of 330 ms travels 15 cm into a tree before stopping whats the average force exerted to
a ball of mass 0300 kg that is moving with a speed of 72 ma collides head-on and elastically with another ball
the winning time for the 2005 annual race up 86 floors of the empire state building was 10 min and 49 s the winners
a coin with a diameter of 3 cm is dropped onto a horizontal surface the coin starts out with an initial angular speed
a heating element in a stove is designed to dissipate 3380 w of heat when it is connected to 200 v assuming that the
an inductor has a 540- reactance when connected to a 600-hz source the inductor is removed and then connected to a