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A dolphin swims near the sea surface 350 meter west, then 200 meter northwest, and then dives below the surface and swims an additional distance in an unknown direction. The final position of the dolphin is 80 meter directly below a fishing boat placed 400 meter north of the starting point. Determine the dolphin displacement during the dive.
the back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. the walls of the
When you walk toward a mirror you see your image approaching you. If you walk at 2 m/s, how fast do you and your image approach each other
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
A weather vane initially at rest has a moment of inertia of 0.104 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
Tarzan spies a 40kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, What are the frequency of Tarzan's swing
A 332 kg piano slides 3.54 m down a 31.2° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Calculate the net work done on the piano
two point charges q1 4.00nc and q2 ?3.00nc are placed 20.0cm apart as shown in figure 1. there also exists a third
A 1300 kilogram car has a maximum power output of 130 horsepower. Find how steep a hill can it climb at a constant speed of 94 km/h if the frictional forces add up to 800 Newton
An electron that has a horizontal initial speed of 4.50 106 m/s enters a region that has anelectric field of 120 V/m pointingvertically upward. How long does the electron take to travel19 cm in the horizontal direction?
The engine of an aircraft propeller delivers an amount of power 177 hp to the propeller at a rotational velocity of 2390rev/min, How much torque does the aircraft engine provide
You have three resistors with values 3.7?, 2.8?, 5.1?, and a battery of 3.6V. You begin by connecting the three resistors in parallel, What is the magnitude of the current in the 2.8 resistor
Two college students having the same mass M roll toward each other on roller blades, each moving at the same speed v. What is the combined momentum of the two skaters?
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