Speed of the large fish immediately after lunch
A 5 kg fish swimming 3 m/s swallows an absent minded 1 kg fish at rest. What is the speed of the large fish immediately after lunch?
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A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below the horizontal, what is the magnetic flux through the desk surface?
The force exerted by the wind on the sails of a sailboat is Fsail = 440 N north. The water exerts a force of Fkeel = 160 N east. If the boat (including its crew) has a mass of 250 kg, what are the magnitude and direction of its acceleration?
A mass m is being lifted upward by means of a vertical spring of force constant k,with a uniform upward acceleration 'a'.If at the instant its velocity is v= A g.√(3m/k) the upper end of the spring is suddenly brought to rest, calculate the
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Two railroad cars, each of mass 6500 kg and traveling 87 km/h in opposite directions, collide head-on and come to rest. How much thermal energy is produced in this collision?
Speedboat A negotiates a curve whose radius is 114 m. Speedboat B negotiates a curve whose radius is 192 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?
A horizontal bar with a mass m suspended from one end is held by a cord with tension T, fastened at a distance D from the end of the bar that is attached to a wall with a frictionless pin. What is the torque about the pin exerted on the bar by the
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