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Ships A and B leave port together. For the next two hours, ship a travels at 15 mph in a direction 20° west of north while the ship B travels 20° east of north at 20 mph.
1. What is the speed of ship A as seen by ship B?
2. What is the distance among the two ships two hours after they depart?
q1. an object of mass 8.5kg is lifted from the floor to a height of 0.5m at a constant speed.a what is the net force
an ambulance moving at 42 ms sounds its siren whose frequency is 450hz. a car is moving in the same direction as the
a car traveling at 95 km/hr. is 210 m behind a truck traveling at 75 km/hr. How long will it take the car to catch the truck
A car is traveling along a straight road at a velocity of +39.0 m/s when its engine cuts out. For the next ten seconds the car slows down, Find the velocity of the car at the end of the initial ten-second interval
A golf ball strikes a hard, smooth floor at an angle of ? = 32.4° and, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
A car travels along a straight line at a constant speed of 41.5 mi/h for a distance d and then another distance d in the same direction at another constant speed. What is the average speed for this new trip
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The other string is plucked in a different location, primarily exciting the 5th harmonic. The resulting sounds give rise to a beat frequency of 342 Hz. What is the wave propagation speed on the guitar strings?
Consider the following vector fields: C=2x(x-direction), D=5x(y-direction), F=4s(phi-direction), G=3s(s-direction), For each field which could be magnetic, calculate the current density at the origin in two different ways
A copper wire has diameter 0.140mm and length 11.0cm . It's in a horizontal plane and carries a current of 2.50A, Find the magnitude of the magnetic field needed to suspend the wire against gravity.
A simple pendulum is made from a 0.63 mlong string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before itattains its ..
A skier of mass 113 kilogram travels down a frictionless ski trail. determine the work done by gravity on the skier
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