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a woman at an airport is towing her 205 kg suitcase at constant speed by pulling on a strap at an angle of above the
a 300 kg block starts from rest at the top of a 30deg incline and slides a distance of 180 m down the incline in 130 sa
an elevator mass 5000 is to be designed so that the maximum acceleration is 620times102what is the maximum force the
what volume of 01125m copperii chloride solution is required to react completely with 550g of aluminumdescribe in
in the bohr model of the hydrogen atom the speed of the electron is approximately 180x106 msa find the force acting on
whenever two apollo astronauts were on the surface of the moon a third astronaut orbited the moon assume the orbit to
what is the concentration of hcl in the final solution when 65 ml of a 12 m hcl solution is diluted with pure water to
a using linear combinations of atomic orbital-molecular orbital theory draw the molecular orbital splitting diagram for
in a thundercloud there may be electric charges of 370 c near the top of the cloud and -370 c near the bottom of the
a 2500ml sample of kno3 solution was diluted to 1000 x 103 ml the concentration of the final solution is 000383 m
a car is traveling at 480 kmh on a flat highwaya if the coefficient of friction between road and tires on a rainy day
1 propose a synthetic route for the conversion of 1-methylcyclohexene into 3-methylcyclohexene note that the easiest
a hockey puck is hit on a frozen lake and starts moving with a speed of 121 ms five seconds later its speed is 550 msa
determine the energy of 160 mol of photons for each of the following kinds of light infrared radiation 1510
a 2000 kg car is slowed down uniformly from 240 ms to 500 ms in 540 sa what average total force acted on the car during
what should be the final volume of a solution containing 505g of solid kmno4 be in order to prepare a 0745 m
a sled is being pulled along a horizontal surface by a horizontal force of magnitude 600 n starting from rest the sled
a 400 ml sample of 0150 m baoh2 is titrated with 0400 m hno3 calculate the ph after the addition of the following
a metal ball with a mass of 229middot10-6 kg and a charge of 457 mc has a kinetic energy of 451middot108 j it is
two firecrackers explode at the same place in a laboratory and are separated by a time of 3 years as measured on the
when lithium metal is heated strongly in an atmosphere of gaseous nitrogen the product formed contains 5978 li and 4022
romeo is chucking pebbles gently up to juliets window and he wants the pebbles to hit the window with only a horizontal
an asteroid is moving along a straight line a force acts along the displacement of the asteroid and slows it down the
1 what is the thickness in mm of the sheet formed by atoms of lead the density of lead is 1135 gcm3a 00910 b 188 times
two charged objects experience a mutual repulsive force of 071 n if the charge of one of the objects is reduced by half