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a light wave travels through air at a speed of 30 e8 ms red light has a wavelength of about 66 e-7 m what is the
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a 1500 kg car traveling east with a speed of 250 ms collides at an intersection with a 2500 kg van traveling north at a
please be scientifically thorough in your explanation and please use an examplein thermodynamic terms and theory why
a sled is being pulled across a horizontal patch of snow friction is negligible the pulling force points in the same
a hoop ie a ring of radius 4 m and mass 13 kg is suspended from a pivot on the perimeter of the hoop as shown in the
1 how many protons neutrons and electrons doesnbsp238punbsphave2nbspelement x has a half-life of 100 years if i have a
a golf club strikes a 0049-kg golf ball in order to launch it from the tee for simplicity assume that the average net
during a tug-of-war team a pulls on team b by applying a force of 2670 n to the rope between them how much work does
a 140-kg crate is being pushed across a horizontal floor by a force p that makes an angle of 499 deg below the
in most situations involving transmitters and receivers the transmitter is at a fixed frequency and the receiver is
two gas cylinders are identical one contains the monatomic gas argon ar and the other contains an equal mass of the
a 0120 m long copper wire has a mass of 902 g and is carrying a current of 510 a perpendicular to a uniform magnetic
a vertical spring stretches 38 cm when a 6-g object is hung from it the object is replaced with a block of mass 30 g
to test the resiliency of its bumper during low-speed collisions a 1 110-kg automobile is driven into a brick wall the
a seconds pendulum is one that moves through its equilibrium position once each second the period of the pendulum is
a tennis ball is struck and departs from the racket of prof jacome horizontally with a speed of 30 ms the ball hits the
suppose a piano string is supposed to be tuned to 440 hz but in reality it is tuned to 441 hz how far out of tune is it
a student does 1000 j of work when she moves to her dormitory her internal energy is decreased by 3000 j determine the
a 19-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 25 n starting from rest
how impulse-momentum theorem relates to newtons second law the relationship between linear momentum conservation and
paper has a dielectric constant k37 and a dielectric strength of 15106 vm suppose that a typical sheet of paper has a
1 calculate the electrostatic force between a -830 muc charge and a -62 muc charge that are 83 mm apart2 an em wave