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a duct has an initial cross-sectional area of 058 m2 if the initial velocity of the air moving through the duct is 95
steam with a mass flow rate of 25 kgs enters a turbine at 4 mpa and 700oc if the steam exits at a pressure of 75 kpa
an 83 kilogram skier starts at rest 250 meter up the side of a mountain the skier then travels down the slope until the
a metal block of mass m 500 kilogram is hanging vertically from a string of length l122 meter a rubber bullet of mass
a 260 kilogram steel ball strikes a wall with a speed of 100 ms at an angle of 600 degree with the surface it bounces
a baseball moving at a speed of 45 ms is struck by a bat moving towards it with an average speed of 26 ms the collision
a 1450 kilogram car is traveling with a speed of 12 ms on a frictionless horizontal surface until it encounters a
a constant 95 newtons force acts on a450 kilogram box the box initially is moving at 20 ms in the direction of the
a 240-kg crate is pushed horizontally with a force of 685 n if the coefficient of friction is 020 calculate the
a block is pushed across a rough horizontal surface from point a to point b by a force magnitude p 54 newton at an
a billiard ball initially at rest is given a sharp impulse by a cue the cue is held horizontally a distance h above the
an elevator with a mass of 4850 kilogram is to be designed therefore that the maximum acceleration is 00680 g find what
two separated weights the first at 40 kilogram the second at 60 kilogram are connected by a cord running through them
a jet catapult on an aircraft carrier accelerates a 2000 kilogram plane uniformly from rest to a launch speed of 320
a sheet having an index of refraction of 140 is to be coated with a film of material having an index of refraction of
an elevator of mass 100 x 104 kilogram accelerates upward at a rate of 15 ms2a find the tension in the cable supporting
an airplane traveling at 805 ms dives at an angle of 30o below the horizontal it releases a bomb at height h the
a 920 kilogram sports car collides into the rear end of a 2500 kilogram suv stopped at a red light the bumpers lock the
consider two identical balls one is hanging on a spring scale in the laboratory and one is hanging on a spring scale
a boat crosses a river of width w100 meter in which the current has a uniform speed of 135 ms the pilot maintains a
a bungee cord can stretch but it is never compressed when the distance between the two ends of the cord is less than
when a book weighing 10 newton is located on a table the table exerts a normal force of 10 newton on the book when a
a wheel is rotating freely at angular speed 760 revmin on a shaft whose rotational inertia is negligible a second wheel
a puck goes around its circular path once every 16 second its speed is 33 cms estimate what the radius of its circular
a 600 kilogram woman stands at one end of a 120 kilogram raft that is 6 meter long the other end of the raft is 05