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a state trooper chases a speeder along a straight stretch of roadboth vehicles move at 160 kmh thesiren on the troopers
a water tank open to the atmosphere at the top has two smallholes punched in its side one above the other the holes are
the two headlights of an approaching automobile are 15 m apart assume that the pupil diameter of theobserver is 44 mm
a solid ball has a rotational inertia of 00314 kgm2 it is rotated by applying a 47 n force tangentiallyto it the radius
a 085 kg mass attached to a vertical spring of force constant150 nm oscillates with a maximum speed of v 035 ms find
the four tires of an automobile areinflated to a gauge pressure of 20 x 105 pa each tire has an area of 0024 m2 in
the distance to a point source is increased by a factor of 7a by what factor does the intensity increaseb by what
a runner weighs 573 n and 71 of this weight is watera how many moles of water are in the runners bodyb how many
a 0280 kg croquet ball makes an elastic head-on collision with asecond ball initially at rest the second ball moves off
a force of 250n is applied to a hydraulic jack piston wth a01m diameter if the output piston which supports the loadhas
a force of 250 n is applied to a hydraulic jack pistonwith a 01m diameter if the output piston which supportsthe load
the de broglie wavelength of a 1 mg grain of sand being blownby the wind is 3x10-29 m what is the speed of thegrain of
a spaceship whose rest length is 350m has a speed of 82c withrespect to a certain reference frame a micrometeorite also
during the final stages of descent asky diver with an openparachute approaches the ground with a constant velocity
a block lies on a horizontal frictionless surface and isattached to the free end of a spring with a spring constant of
a flask with a volume of 150 l providedwith a stopcock contains ethane gas c2h6at 300 k and atomospheric pressure 1013
as lc circuit consists of a capacitor with c 34 x10-6 f and an inductor with l 0080 h at t 0 the capacitor has
an aluminum cup contains 225 g ofwater and a 40 g copper stirrer all at 27degc a 410 g sample of silver at an initial
a 30-kg shopping cart full of groceries sitting at the top of a20-m hill begins to roll until it hits a stump at the
in a playground there is a small merry-go-round of radius120 m and mass 120 kg its radius of gyration see problem 85
a 500-n salmon swims 200m upstream against a current thatprovides a resistance of 150n this portion of the stream rises
a scuba diver releases a 350 cmdiameter spherical bubble of air from a depth of 100 m in alake assume the temperature
ultraviolet light of wavelength 218 nm shines on a zinc surface if the workfunction of zinc is 43 ev what is the
in an internal combustion engine air at atmostpheric pressureand a temperature of about 20 degrees celcius is
a spring is hung from a ceilingand an object attached to its lower end stretches the spring by adistance of 500 cm from