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two forces f1vec and f2vec act at a point f1vec has a magnitude of 840n and is directed at an angle of 570 deg above
a 970- kg car starts from rest on a horizontal roadway and accelerates eastward for 500s when it reaches a speed of
a hot saturated solution of a material to be crystallized is passed through a piece of fluted filter paper in a
a 1 kg stone is thrown upward from a 20 m building with a vertical velocity of 15 ms compute the followinga the
a hockey player is standing on his skates on a frozen pond when an opposing player moving with a uniform speed of 15 ms
the ladder of the lunar lander was approximately 10ft high if neil armstrong had fallen out of the lander while on the
a 75 kg man standing on a scale in an elevator notes that as the elevator rises the scale reads 825n what is the
in the rectangle in the drawing a charge is to be placed at the empty corner to make the net force on the charge at
a red car and a blue car are both travelimg east with the red car 250 m behind the blue car if the red car has a
an air-filled spherical capacitor is constructed with an inner-shell radius of650cm and an outer-shell radius of150cma
a very long insulating cylindrical shell of radius 670cm carries charge of linear density 860 nc spread uniformly over
on a trip to northern ontario a car drives east for 2 hours at 100 kmh and then north for 8 hours at 100 kmh what is
a a typical red laser pointer emits 5 mw of light at 660 nm calculate the number of photons per second being emitted
a calculate the threshold frequency and wavelength for photoelectric effect from magnesiumb calculate the stopping
a courier on a bucycle travels 20 km n then 35 km e then 10 km s what is the magnitude of the displacement of the
at an instant when a soccer ball is in contact with the foot of the player kicking it the horizontal or x component of
a 26-kg cart is rolling along a frictionless horizontal track towards a 14-kg cart that is held initially at rest the
two point charges q1 20 pc and q2 -20 pc are separated by 22 microma what is the dipole moment of this pair of
a car with an intial velocity of 20 ms east beings accelerating at 20 ms2 east what is the distance traveled by the car
a 4020 kg roller coaster crests a 24 m high hill with negligible speed the roller coaster loses 44 kj of energy on the
in outer space a constant net force of magnitude 140n is exerted on a 304kg probe initially at restwhat acceleration
in a typical lightning flash the potential difference between the cloud and the ground is 109v and the charge
a box rests on a frozen pond which serves as a frictionless horizontal surface if a fisherman applies a horizontal
an isolated conductor of arbitrary shape has a net charge of 110times10-5 c inside the conductor is a cavity within
a thin metallic spherical shell of radius a 70 cm has a charge qa 200times10-6 c concentric with it is another thin