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a conducting rod slides at 40 ms on metal rails separated by 20 m if a current of 40 ma is generated in the circuit
1 why is thermal energy hard to convert into other forms of energy like potential or kinetic energy2 what are the
how fast does salt fall down to the bottom of a soup bowl estimate falling speed the salt has a diameter of 1 mm and
a286-kg motorcycle is accelerating up along a ramp that is inclined 295degabove the horizontal the propulsion force
two boxes b126kg and b264kg are being pushed across a horizontal frictionless surface as the drawing shows the 47-n
block 1 17 kg is setting on the floor of an elevator a rope pulls vertically up on block 1 with a tension of 8 n the
a space probe is launched from earth headed for deep space at a distance of 10000 miles from earths center the
a grinding wheel of radius 036 m which starts from rest rotates at 1850 revolutions per minute rpm and has a moment of
write an expression for a harmonic wave that has an amplitude of 03m a wavelength of 2m propagates in the negative
a compact car can climb a hill in 12 seconds the top of the hill is 82 feet higher than the bottom and the cars mass is
two 12-cm-diameter charged disks face each other 25 cm apart both disks are charged to - 50 nc what is the electric
an apple is thrown from the passenger side window of a car that is travelling at 55 mph the initial speed of the apple
a222-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp the ramp is inclined at
a bicyclists average power output is 220 watts w if the bicyclist and rider with a combined mass of 75 kg climb a hill
an athlete competing in the long jump leaves the ground with a speed of 914 ms at an angle of 55deg with the vertical
a 105-kg box on the right and a 40-kg box on the left are tied together by a horizontal cable the 105-kg box is acted
a rod of constant cross-sectional area has conductivity kappa1 and conducts heat at a constant rate between two
an astronomical unit au is equal to the earths semimajor axis in its orbit around the sun or 150 x 10 11 m an asteroid
a 72kg mass hanging from a spring scale is slowly lowered onto a vertical springa what does the spring scale read just
a string with one 10-g washer on the end is attached to the rearview mirror of a car when the car leaves an
you pull a rope oriented at 37deg angle above the horizontal the other end of the rope is attached to the front of the
a 57 kg astronaut including spacesuit and equipment is floating at rest a distance of 9 m from the spaceship when she
the earth rotates on its axis once every 24 hours find the centripetal acceleration of an object on the equator that
a cylinder of radius b 25mm has an enclosed charge of 573 mc contained in a closed gaussian surface of radius r 17mm
a 1700 hz siren and a civil defense official are both at rest with respect to the ground what frequency does the