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During a circus performance, a 71.2-kg human cannonball is shot out of a 16.8-m-long cannon. If the human cannonball spends 1.06 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.
A child sits on a rotating Merry-go-round, 2.3 m from its center.If the speed of the child is 2.2 m/s, what is the minimumcoefficient of static friction between the child and the merry-go-round that will prevent the child from slipping?
you connect five identical resistors in series to a battery whose emf is 12.0 v and whose internal resistance is
What is the radius r of the turn if theta = 20.0 degrees (assuming the car continues in uniform circular motion around the turn).
question a baseball thrown at a angle of 40.0 degrees above the horizontal at 15.0 ms from the top of a vertical cliff
Under favourable circumstances the human eye can detect 1.0e-18 J of electromagnetic energy. How many 600-nm photons does this represent.
A -42 nC charge is distributed uniformly along the x-axis from x = -1.1 m to x = 2 m . Consider a point at y = 2.2 m on the y-axis. find the total magnitude of the electric field at the point
Two converging lenses having focal lengths of 12.0 cm and 22.0 cm are placed 50 cm apart, as shown in the figure below. The final image is to be located between the lenses, at the position indicated.
block of wood floats in fresh water with 0.651 of its volume V submerged and in oil with 0.890 V submerged. Find the density of the wood and the oil
A spaceship is moving around the Earth in a 500- x 1000km orbit. At apogee, a retrorocket is fired in a direction exactly opposite to the spaceship's velocity vector. How much time elapsed between retrofire and impact
What would be the equilibrium temperature when a 271 g block of copper at 280°C is placed in a 169 g aluminum calorimeter cup containing 817 g of water at 11.5°C.
a uniform electric field of magnitude 200 vm is directed in the negative x direction. a 10.7 muc charge moves from the
A charge Q is uniformly distributed around a thin plastic ring with radius R lying in a yz plane with the ring center at the origin. A point charge with value q is located on the x axis at point x1.
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