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A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. It takes a time of 2.70 second for the boat to travel from its highest point to its lowest, a total distance of 0.690 meter. The fisherman sees that the wave crests are spaced a horizontal distance of 5.60 meter apart. Estimate how fast are the waves traveling?
Assume that wind, which forced a fluids motion along a north to south path suddenly ceases at latitude 45oN and the only acceleration to continue is due to the Coriolis force. find the time it takes to complete one full circle
A hollow sphere of negligible mass and radius R is completely filled with a liquid so that it's density is p. What is the density of the enlarged sphere
A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/minute. Obtain what the constant angular acceleration of centrifuge
a lead ball of mass 18.0 kg is dropped from rest from a height of 23.0 m above the ground, Write in vector format the acceleration of the ball
The angular speed of a car engine is increased at a fix rate from 1500 rev/min to 3600 rev/min in 18 second. Compute how many revolutions does the engine make during this18 sec interval?
An Airbus A320 jetliner has a takeoff mass of 75,000 kg. It reaches its takeoff speed of 98m/s (220mph ) in 38s. What is the thrust of the engines
1. a ship has a top speed of 3.0 ms in calm water. the current of the ocean tends to push the boat at 2.0 ms on a
Suppose a 1800 kg car passes over a bump in a roadway that follows the arc of a circle of radius 20.4 m. What force does the road exert on the car as the car passes the highest point of the bump if the car travels at 8.94 m/s
A pitcher throws a 0.15-kg baseball so that it crosses home plate horizontally with a speed of 20 m/s. The ball is hit straight back at the pitcher with a final speed of 22 m/s. What is the impulse delivered to the ball
The earth orbits the sun once a year (3.16 x 10^7 s) in a nearlycircular orbit of radius 1.50 x 10^11 m. With respect to the sun,determine the magnitude of the earth’s centripetal acceleration.
A steel wire 4.10m long has a mass of 6.10×10^?2 kg and is stretched with a tension of 1260N . What is the speed of propagation of a transverse wave on the wire?
Three resistors having resistances of R1 = 1.74? , R2 = 2.57? and R3 = 4.83? respectively, Find the voltage across each resistor
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