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two pole-vaulters just clear the bar at the same height the first lands at a speed of 784 ms while the second lands at
a girl and her bicycle have a total mass of 40 kg at the top of the hill her speed is 50 ms the hill is 10 m high and
one of the asteroids ida looks like an elongated potato surprisingly it has a tiny compared to ida spherical moon this
5353 j of heat are removed from a gas sample while it is being compressed by a piston that does 5201 j of work what is
an iron bar of mass 099 kg slides down a frictionless incline 094 m high at the bottom of the incline it collides and
a 1110 n man stands in the middle of a frozen pond of radius 418m he is unable to get to the other side because of a
a cup of water is heated with a heating coil that delivers 11785 w of heat in one minute the temperature of the water
a bowling ball and a silver dollar are rolled down a 15 degrees incline which is 5 meters longa calculate the final
a sphere of radius 10 cm is dropped into a glass cylinder filledwith a viscous liquid the mass of the sphere is 120 g
how does adding a small amount of a grignard reagent solution to a grignard reaction help the reaction get started hint
a car is traveling at 5836 mph the driver applies the brakes and the car decelerates at 425 ms2 what is the stopping
each of two very long straight parallel lines carries a positivecharge of 4400 mucm the distance d betweenboth lines is
determine the frequencies that hydrogen atoms emit in transitions from n 6 and n 5 levels to the n 3 level for the h
an inductor a capacitor and a 640- resistor are connected in series with an ac generator the generator produces an rms
antimony is alloyed with lead to increase the rigidity of components used in the construction of lead storage
a 237 g bullet is shot into a 4706 g wooden block standing on a frictionless surface the block with the bullet in it
a disk rolls down a slope it rotational axis is its center of mass it is rotation at a constant angular speed making
earth has a radius of 638 times 106 m and is about 150 times 1011 m from the sun mars has a radius of 340 times 106 m
a solution of sodium chlorate is prepared by dissolving 128g of the salt in water to form 1l of solution to form a
a ferris wheel starts at rest and builds up to a final angular speed of 070 rads while rotating through an angular
boxes are moved on a conveyor belt from where they are filled to the packing station 14m away the belt is initially
the average concentration of bromide ion in sea water is 65 mg of bromide per kg of sea water what is the bromide
it will be shown later that the scale height h is proportional totemperature t for an average temperature of 255 k the
a ball is launched straight up with a speed of 1513 miles per hour what is the maximum height reached in