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two blocks of masses m1 200 kg and m2 440 kg are each released from rest at a height of h 400 m on a frictionless
a catapult with a radial arm 419 m long accelerates a ball of mass 191 kg through a quarter circle the ball leaves the
starting from rest a basketball rolls from the top to the bottom of a hill reaching a translational speed of 52 ms
a small galvanometer coil of resistance r 20 and full-scale deflection at 1 ma is connected in series with a 4980
a woman with a package in her hand is riding in a hot air balloon which is climbing at a constant speed of 80 ms
a rock is thrown vertically upward with an initial speed of 100 fts at the same instant another rock is thrown
helium neon laser light has a wavelength in air of 6328 nm what is the energy of a single photon in the
the drive propeller of a ship starts from rest and accelerates at 310 x 10-3 rads2 for 260 x 103 s for the next 130 x
a ball of mass 110 kg moving with speed of 20 ms hits a wall and bounces back with the same speed in the opposite
a 2 c negative charge is attracted to a large well-anchored positive charge how much kinetic energy does the negatively
the metal plates of a tv tube are parallel and 12 mm apart the potential difference between them is 12 kva find the
dirk pushes on a packing box with a horizontal force of 520 n as he slides it along the floor the average friction
a 30 mw laser produces a beam of light with a diameter of 26 mm shines its light on a perfectly absorbing surfacewhat
a string with both ends held fixed is vibrating in its third harmonic the waves have a speed of 186 ms and a frequency
two equally charged spheres are located 2 cm away from each other when they are released they accelerate at 643 ms2 if
one string of a certain musical instrument is 800cm long and has a mass of 872 g it is being played in a room where the
each of three tuning forks a b and c has a slightly different frequency when a and b are sounded together they produce
a 37 l volume of ideal neon gas monatomic is at a pressure of 29 atmospheres and a temperature of 330 k the atomic mass
a ball is thrown horizontally from an elevation of 1400 m above ground with a speed of 200ms where is the ball after
a small ball is attached to one end of a spring that has an unstrained length of 0179 m the spring is held by the other
in a large centrifuge used for training pilots and astronauts a small chamber is fixed at the end of a rigid arm that
a light ray is incident from air with n 1 on a material with n 15 as shown in the diagram below here 38degwhat is
a plank 200 cm thick and 130 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the
you want to double the resonance angular frequency of a series r-l-c circuit by changing only the pertinent circuit
margaret walks to the store using the following path 500 miles west 200 miles north 300 miles east what is her total