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a car is traveling at 560 kmh on a flat highwaya if the coefficient of friction between road and tires on a rainy day
if the coefficient of kinetic friction between a 350 kg crate and the floor is 025 what horizontal force is required to
a new circus act features a large frictionless cannon with an 2500 nm spring mounted at the bottom of a long barrel
a point source is 180 cm below the surface of a body of a liquid n 133 find the diameter in meters of the largest
a steel train rails are laid in 126m -long segments placed end to end the rails are laid on a winter day when their
a mass of 2121 kg is attached to a light string t is wrapped around a cylindrical spool of radius 10 cm and moment of
a uniform 450n and 7m long ladder rests against a smooth wall making a 30degree angle with wall a 750 n man can climb
a mass m slides without friction on a 1-dimensional track the mass is moving from left to right with initial velocity
at some point in its orbit our asteroid is moving with a speed of 20 kilometers per second determine the kinetic energy
red light travels at 207times108 ms in a particular type of oil what is the index of refraction for red light in the
assume this asteroid has the shape of a sphere a rock sitting on the surface of the asteroid has a weight of 100
suppose you take a 20times102ohm resistor and a 040 h inductor and make a series circuit with a voltage source that has
two coherent sound waves have intensities of 0030 wm2 and 0092 wm2 where you are listeninga if the waves interfere
a 16-m-long string fixed at both ends vibrates at resonant frequencies of 720 hz and 960 hz with no other resonant
two packing crates of masses 100 kg and 500 kg are connected by a light string that passes over a frictionless pulley
in a certain chemical process a lab technician supplies 231j of heat to a system at the same time 670 j of work are
in the days before compact discs and mp3 players ancient history music was recorded in scratches in the surface of
the speed of sound in air at room temperature is 339 msa what is the frequency of a sound wave in air with wavelength
in a series r-l-c circuit r 460 ohm l 0390 h and c 120times102 mfa what is the resonance angular frequency of the
a cannon tilted up at a 30deg angle fires a cannon ball at 90 ms from atop a 16 m high fortress wall what is the balls
a student places her 350 g physics book on a frictionless table she pushes the book against a spring compressing the
consider a rocket which has two combustion rates 1 4 kgs and 2 8 kgs the relative speed of the exhaust gas is 90 ms
a 50 kg skateboarder wants to just make it to the upper edge of a quarter pipe a track that is one-quarter of a circle
one billiard ball is shot east at 30 ms a second identical billiard ball is shot west at 10 ms the balls have a
you are the technical consultant for an action-adventure film in which a stunt calls for the hero to drop off a 233-m