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Huck Finn walks at a speed of .6m/s across his raft (that is perpendicular to the raft's motion relative to the shore). The raft is traveling down the Mississippi River at a speed of1.7 m/s relative to the river bank. what is Huck's velocity(speed and direction) relative to the river bank?
a person exerts force of 35n on the end of an door 88 cm wide, what is the magnitude of torque if the force is exerted perpendicular to the door
A block of metal has an actual weight of 45 N and an apparent weight of 25 N in water. What is the buoyant force from the water
A submarine is 300. m horizontally out from the shore and 100m. beneath the surface of the water. How long does it take for the laser bream to reach the building
At a recent rock concert, a dB meter registered 114 dB when placed 1.30 m in front of a loudspeaker on the stage, What was the power output of the speaker
You throw a stone vertically upward with an initial speed of 6.0 m/s from a third-story office window, Find the time the stone is in flight
You have a compound microscope with a barrel of length 157 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
q1. a point charge q1 -8.9 muc is located at the center of the thick conducting shell of inner radius a 2.2 cm and
A 20.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block
Electric breakdown (sparks) occur in air if the electric field reaches 3 × 106 N/C. How far must a free electron move under the influence of the above electric field
A huge explosion is heard 26.2 miles away. How long does it take the sound to travel that far
Two balls of the same mass areaccelerated by the different net forces such that one ball gains avelocity twice that of the other ball in the process.
A string is wrapped around a pulley of radius 3.60cm , and a weight hangs from the other end. calculate the angular acceleration of the pulley
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