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A boat that travels at a speed of 6.75 m/s in still water isto go directly across a river and back . The current flows at 0.50m/s.
a.) At what angle(s) must the boat be steered?
b.) How long does it take to make the round trip? (assume thatthe boat's speed is constant at all times, and neglect turnaroundtime).
Using and Atwood machine with masses m1 and m2, at first with m1 a distance 2h above m2, what is the speed of either mass they pass each other? Make use of energy to solve (hint they cross halfway between the starting positions of the two masses).
A moving particle encounters an external electric field that decreases its kenetic energy from 9640 eV to 6490 eV as the particle moves from position A to position B.
Three point charges are on the x-axis. The first is located at -4meters and has a charge of -6 coulombs. compute the net force on the charge at the origin
A 10 μF capacitor is charged to 15 V. It is next connected in series with an uncharged 5.00-μF capacitor. The series combination is finally connected across a 50.0-V battery, as diagrammed. Find out the new potential differences across the 5-μF an..
When a voltage of 12.0 V is applied across the two ends of a cylindrical wire of length l, radius r and resistivity ?, an electric current of 1.0 A is measured. Then the same voltage is applied to a second wire with length of 2l, radius of 5r and res..
A billiard ball (the 8-ball) rests directly in front of the side pocket. Pool-hand Peta calls the shot into the side pocket to the right and shoots it in. Find the angle between that velocity vector and the right
the earths crust is broken up into a series of more-or-less rigid plates that slide around due to motion of material in
a ring of charge with radius r 3.5 m is centered on the origin in the x-y plane. a positive point charge is located at
How far away from the people is the plane.
Two persons on ice skates stand face to face and then push each other away. Their masses are 60kg and90kg. find the ratio of their speeds immediately afterwards. which person has the higher speed?
A metal block measures 5.65 cm x 2.97 cm x .92 cm and has a mass of 127.7 g. When lowered into water with a vertical orentation (standing on end) Determine the difference in water pressure between the bottom and top of the block
A block of mass 0.25 kg connected to a spring with spring constant 34 N/m is oscillating on a frictionless horizontal surface. What is the total energy of the system
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