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A 200-m-wide river flows due east at a uniform speed of 4.5m/s. A boat with a speed of 9.0m/s relative to the water leaves the south bank pointed in a direction 28o west of north. What is the
(a) magnitude and
(b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to the west.
(c) How long does it take for the boat to cross the river?
A mass of 10kg is sliding up a frictionless plane inclined at 10 degree. How far does the mass move up along the plane
A plane electromagnetic wave has a maximum electric field of magnitude 3.8E-6 V/m. Find the maximum magnetic field amplitude
A 1.00-kg glider attached to a spring with a force constant 25.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
The mass of a discus is 2 kg. The average net torque exerted on the discus was 100 Nm, What was the angular impulse applied to the discus during the throw
A ski starts from rest and slides down a 22° incline 75 m long. If the coefficient of friction is 0.09, what is the ski's speed at the base of the incline? If there is snow level at foot of the incline and it has the same coefficient of friction, ..
A thick-walled, non-conducting spherical shell has a positive uniform volume charge density p bounded by radii r1 and r2>r1. With V=0 at infinity, Find the net charge of the shell
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. calculate At what angle is the airplane banked
How to find out the force of friction
An AC generator supplies an rms voltage of 120 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 5.00 ?F capacitor, What is the peak voltage across the capacitor
The drawing shows an equilateral triangle, each side of which has a length of 2.23 cm. Point charges are fixed to each corner, Determine the charge qA and qB
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
An automobile of mass 1500 kg moving at 25m/s collides with a truck of mass 4500 kg at rest. What is the final velocity of the car after the collision
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