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A 45 kg woman stands up in a 60 kg canoe of length 5 meters.She walks from a point 1 meter from one end to a point 1 meter fromthe other end. If you ignore resistance to motion of the canoe inthe water, how far does the canoe move during this process?
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. Calculate the buoyant force exerted by the water on the sphere
A car starts at a position of x=2km and has a speed of 1 mph. After 56 s thecar has a speed of 44 mph. Determine the magnitude of the car's average acceleration during this time.
A mass m1 = 3.8 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 5.5 kg which hangs freely from the string, What is the tension in the string as the block falls
Along a straight road through town, there are three speed-limit signs. They occur in the following order: 54 , 35 , and 18 mi/h, with the 35 -mi/h sign located midway between the other two.
A 328 kg rocket moving radially outward from Earth has a speed of 7.28 km/s when its engine shuts off 173 km above Earth's surface. What maximum height (in km) above the surface is reached by the rocket
A granite ball of radius 2.00m and emissivity of 0.450 is heated to 135 C whereas the ambient temperature is 25 C. What is the net power radiated from the ball
What is the ratio of the amplitude
Assume that there is an announcement of a fantastic process capable of putting the contents of physics library on a very smooth postcard. Will it be readable with an electron microscope? Explain.
An object of mass m moves in a circular orbital under the influence of an harmonic oscillator potential U(r)=1/2(alpha)r^2, Determine the energy of the orbiting object
According to a crude model, the 11B nucleus is a uniform solid sphere of mass 1.83*10^-26 kg and radius 2.67*10^-15 m which spins about its diameter. what is the angular velocity of the boron nucleus
A total charge of 7.05 10-6 C is distributed on two different small metal spheres. How much charge is on each sphere
What is true of the net force when 3 or more forces are in a state of equilibrium, and If a force (F) make an angle (theta) with the x-axis, what are the formulas used to the x and y components of this force
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