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when venturing forth on planet x you throw a 501 kg rock upward at 110 ms and find that it returns to the same level
a bullet with mass 504 g is fired horizontally into a 2125-kg block attached to a horizontal spring the spring has a
a load of bricks with mass 154 kg hangs from one end of a rope that passes over a small frictionless pulley a
with its wheels locked a van slides down a hill inclined at 260 to the horizontalfind the acceleration of this van if
suppose two vectors each have length 30 units if the two vectors are perpendicular to each other what is the resultant
a small button placed on a horizontal rotating platform with diameter 0328 will revolve with the platform when it is
a light ray in air is incident on a water n 1333 surface at a 650deg angle of incidence finda the angle of reflection
an immersion heater has a resistance of 50 ohms while drawing a current of 30 amperes how much electrical energy is
a person is standing on a level floor his head upper torso arms and hands together weigh 401 n and have a center of
a thin rod has a length of 0292 m and rotates in a circle on a frictionless tabletop the axis is perpendicular to the
an airplane pilot wishes to fly directly westward according to the weather bureau a wind of 700 kmh is blowing toward
if the free end of the string is held in place and the hoop is released from rest calculate the angular speed of the
starting with 210 mol of n2 gas assumed to be ideal in a cylinder at 100 atm and 210 degc a chemist first heats the gas
a proton beam in an accelerator carries a current of 105 microa if the beam is incident on a target how many protons
a wire 300 m long and 0450 mm2 in cross-sectional area has a resistance of 41 at 20degc if its resistance increases to
a balloon carrying a basket is descending at a constant velocity of 200 ms a person in the basket throws a stone with
the density of a 30-m long rod can be described by the linear density function x 135 gm 136x gm2 one end of the rod
an airplane is flying with a velocity of 810 ms at an angle of 230 degrees above the horizontal when the plane is a
a golf ball is dropped from rest from a height of 810 m it hits the pavement then bounces back up rising just 560 m
a toboggan approaches a snowy hill moving at 109 ms the coefficients of static and kinetic friction between the snow
two small plastic balls hang from threads of negligible mass each ball has a mass of 0170 g and a charge of magnitude q
two 100 n forces pull on a 50kg mass one of the forces pulls to the right and the other pulls 90 degrees from the first
an airboat with mass 436 102 kg including the passenger has an engine that produces a net horizontal force of 824 102 n
suppose the pilot starting again from rest opens the throttle partway at a constant acceleration the airboat then
a 77-kg man standing on a scale in an elevator notes that as the elevator rises the scale reads 841 n what is the