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The top surface of a calm, smoothly flowing stream is always at atmospheric pressure. As water in this stream runs into a tree stump and slows almost to a stop, the water's top surface
shifts upward slightly above the normal stream level.
shifts downward slightly below the normal stream level.
stays at the same height and does not begin to rotate.
stays at the same height but begins to rotate clockwise as viewed from above.
Two in-phase speakers 2.0 m apart in a plane are emitting 1800 Hz sound waves into a room where the speed of sound is 340m/s . Is the point 4.0m in front of one of the speakers, perpendicular to the plane of the speakers, a point of maximum constr..
A ball is thrown vertically upward with aspeed of 1.53 m/s from a point 4.21 m above the ground. Calculate the time in which the ball will reach the ground
A large air conditioner has a resistance of 9.0 ohms and an inductive reactance of 13 ohms. Find the average power consumed by the air conditioner
An object is placed 64.5 cm from a screen. Find the magnification of the lens
A rock is released from rest into water. The magnitude of Fd of the drag force acting on the rock due to its motion through water can be modeled as Fd = Cd(v), where v is the speed of the rock and Cd is the constant drag coefficient. Determine the..
A wooden raft has a mass of 85 kg. while empty it floats in water (density 1000 kg/m3) with 61 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A gun is fired vertically into a m = 1.31 kg block of wood at rest on a thin horizontal sheet directly above it If the bullet has a mass of 21.1 g and a speed of v = 305 m/s, how high will the block rise into the air after the bullet becomes embedded..
A 5439 N car traveling at 52m/s up an incline that is at an angle of 5.0 degrees about the horizontal, brakes, coming to rest in 124m. What is the braking force
A conducting rod whose length is ? = 1.60 m is placed on frictionless U-shaped metal rails that is connected to a lightbulb having a resistance of 4.00, At what rate is energy dissipated in the lightbulb
An airplane is flying horizontally with a speed of 1000 km/h(280m/s) when an engine falls off. avoid air resistance,assume it takes 30s for the engine to hit the ground.
The center of mass for a 1 meter stick is at 49.7cm when placed on an fulcrum. Calculate the net clockwise torque on the meter stick
a car is moving down a street at 55 kmh. a child suddenly runs into the street. if it takes the driver 0.75 s to react
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