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a film of oil lies on wet pavementnbsp the refractive index of the oil surpasses that of the waternbsp the film has the
a 1000 kg cart is rolling to the right at 35 ms a 70 kg man is standing on the right end of the cart what is the speed
a car of mass 1440 kg traveling at 28 ms is at the foot of a hill that rises 115 m in 3 kilometres at the top of the
the 2 kg block in the figure slides down a frictionless curved ramp starting from rest at a height of h 2 m the block
a rifle fires a 126 x 10-2-kg pellet straight upward as the pellet rests on a compressed spring that is released when
during 025 s a wheel rotates during an angle of 362 rad as a point on the periphery of the wheel moves with a constant
consider drilling a tunnel among any two points on the earthrsquos surface this tunnel does not necessarily pass during
a double-slit interference pattern is created with two narrow slits spaced 02 mm apart the distance among the first and
a diver in midair has an angular velocity of 60 rads and a moment of inertia of 16 kgmiddot m2 he then pulls is arms
1 a 50000-kg railroad freight car collides with a stationary caboose car they couple together and 31 percent of the
1 how long could this energy be used to burn ten 60 w light bulbs2 if this energy were used to raise a car of mass 1845
a 540-kilogram child starts from rest from the top of a frictionless slide that is 46 m tall the bottom of the slide is
a projectile is fired up into the air at a speed of 166 ms at an angle of 38deg relative to the horizontala decide the
a surveyor is using a magnetic compass 90 m below a power line in which there is a stable current of 130 a what is the
a hiker who weighs 603 n is strolling through the woods and crosses a small horizontal bridge the bridge is uniform
in a double-slit experiment the second-order bright fringe is observed at an angle of 056deg if the slit separation is
calculate the force required to pull a copper ball of radius 250 cm upward through a fluid at the constant speed 900
a mass oscillates on a spring with a period t and amplitude 048 cm the mass is at the equilibrium position x 0 at t 0
which of the following if any have an effect on the location of the image formed with a lens1 lens thickness2 type of
a subway train rounds an unbanked curve at 62kmh a passenger hanging onto a strap notices that an adjacent unused
find the change in the force of gravity between two planets when the dinstance between them becomes 10 times
an iron vat is 13 m long at room temperature 20degc how much longer is it when it contains boiling water at 1 atm
a small block of mass m2kg is sent from point a with a speed of 70 ms the indicated heights are h160 and h220
a 725 kg astronaut pushes to the left on a spacecraft with a force in gravity-free space the spacecraft has a total
1 an aluminum wing on a passenger jet is 27 m long when its temperature is 19degc at what temperature would the wing be