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a soft tennis ball is dropped onto a hard floor from a height of 160m and rebounds to a height of 122m assume that the
global energy analysisworldwide energy consumption varies dramatically but the impacts are shared by all the most
you wish to buy a motor that will be used to lift a30-kg bundle of shingles from the ground to the roof of a house the
1 many stoplights now have a sensing system based on inductance to determine if a car is waiting at a red light if that
the leader of a bicycle race is traveling with a constant velocity of 115 ms and is 110 m ahead of the second-place
explain charles ofria states that different configurations have different advantages and disadvantages in terms of
a 68komegaresistor has burned out in a circuit you must replace it with another resistor with the same resistance value
a 12v source is connected across a 10 omega resistera how much energy is used in 2 minutesb if the resister is
dario a prep cook at an italian restaurant spins a salad spinner and observes that it rotates 200 times in 500 seconds
kim begins skiing from a rest position at the top of a 300-meter-long bunny slope that is inclined at 12deg with the
1 define nuclear fission and explain it with the help of the binding energy per nucleon what is the difference between
describe how you would relate energy derived from wave power all the way back to rearranging chemical or nuclear bonds
a father pulls his child on a sled by pulling on rope over his shoulder he exerts a force of 50 n at an angle of 30a
while a roofer is working on a roof that slants at 450 above the horizontal he accidentally nudges his 950 n toolbox
find the radius of an electrons orbit when it moves perpendicular to a magnetic field of 061 t with a speed of 627 x
it is desired that a solenoid 39cm long and with 410 turns produce a magnetic field within it equal to the earths
a 950 cm tall object is placed at a distance of 1720 cm from a convex mirror the distance from the mirror to its focal
some pacemakers employ magnetic reed switches to enable doctors to change their mode of operation without surgery a
a hovercraft moves across a horizontal ice sheet described by the xy plane the craft and pilot have a mass of 358 kg
a laboratory experiment produces a double-slit interference pattern on a screen if the screen is moved farther away
a steel rod of 20 cm in length with youngs modulus of 180 gpa is used for a tensile test if the rod is elongated by 5
the orion project famously led by physicist freeman dyson in 1958 would have used atomic bombs to propel a spacecraft
the 1951 educational film duck and cover was commissioned by the united states federal civil defense administration the
a 5 kg box is pulled on a horizontal surface by a horizontal rope the coefficient of kinetic friction is 025 what is
block a has a mass of 3kg and velocity of 13ms catching up with a second block b that has a mass of 3kg ans is moving