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astronauts on the moon set up a simple pendulum of the length 1 m and measured its period to be 493 s what is the
on the apollo 14 mission to the moon astronaut alan shepard hit agojf ball with a 26 iron the acceleration due to
a peregrine falcon in a tight circular turn can attain a centripetal acceleration 161 times the free-fall acceleration
a ball thrown horizontally at 2472 ms travels a horizontal distanceof 4951 m before hitting the ground from what height
a supply plane needs to drop a package of food to scientists working on a glacier in greenland the plane flies 246 m
a generator uses a coil that has 160 turnsand a 050-t magnetic field the frequencyof this generator is 600 hz and its
you are designing a lathe motor part of which consists of auniform cylinder whose mass is 90 kg and whose radius is 040
human tissue contains about 3middot1027 electrons perkg of material suppose two humans are located 1960 km apart
a subatomic particle called a muon has a mass 207 times that of an electron and a charge equal to an electron charge in
a synchronous turbo generator is otating at 1800rpm has acylindrical rotorthe rotor is the rotating component of the
what is the total mass of the earths atmosphere the radius of the earth is 637x106m and atmosphere pressure at the
in a television set electrons are accelerated from rest through apotential difference of 20 kv the electrons then pass
an astronaut on jupiter drops a rockstraight downward from a height of 120 mif the acceleration of gravity on jupiteris
a 1172kg car traveling to thewest slows down uniformly from 200ms to 50msa how long does it take the car to decelerate
a proton and an electron are moving due east in a constant electric field that also points due east the electric field
a plastic rod is rubbed against a wool shirt thereby acquiring a charge of -01 uc how many electrons are transferred
you jog at 62 mih for 50 mi thenyou jump into a car and drive for another 50 mi with what average speed must you drive
a concave mirror has a focal lenth of 50 cm how far form the mirror should ones face so that the image is doubled the
a 44 kg block of aluminum is heatedat atmospheric pressure so that its temperature increases from285degc to 440degca
a luggage lock like the one shown above has a 3-digit combination set with 3 dials each of which has 10 settings 0-9a
a rubber ball of mass 245 g is droppedfrom a height of 205 m onto a floor the velocity of the ball is reversed by the
a 0240-kg piece of aluminum that has a temperature of -171 degcis added to 15 kg of water that has a temperature of 15
a speedy tortoise can run with a velocity of 10 cms and a hare canrun 20 times as fast in a race they both start at the
a startled armadillo leaps upward rising 0551 m in the first 0198 sa what is its initial speed as it leaves
a drowsy cat spots a flowerpot that sails first up and then downpast an open window the pot was in view for a total