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A 1.1 kg hollow ball with a radius of0.12 m, filled with air, is releasedfrom rest at the bottom of a 1.9 mdeep pool of water. How high above the water does the ball shootupward? Neglect all frictional effects, and neglect the ball'smotion when it is only partially submerged.
m
When 3825 J of heat are added to a 0.14-m-long silver bar, its length increases by 4.59 10-3 m. What is the mass of the bar
If wind blows at 25 m/s over a house, what is the net force on the roof if its area is 214 m2 and is flat
Two infinitely long straight currents are parallel to z axis. One of them, carrying a current I1, intersects at the x-y plane at the point (x1, y1); the other, with current I2, intersects at the x-y plane at the point (x2, y2). Find the resultant B p..
what is the meaning of a ground speed? Justify why the ground speed is different from air speed. Will there ever be conditions under which the ground speed and the air speed be the same
Two small beads having positive charges24qandqare fixed at the opposite ends of a horizontal insulating rod, At what position is the third bead in equilibrium
Atennis ball of mass 5.5*10-2and a speed of 39 M/s strikes a wall at a 45 degree angle, what is the direction of of the balls impuse in relation to the wall
A straight 10-cm wire bent at its midpoint so as to form an angle of 90 degrees carries a current of 10 A. What is the magnitude of the magnetic force on this wire
A 0.144 kg baseball leaves a pitcher's hand at a speed of 22.5 m/s. If air drag is negligible, how much work has the pitcher done on the ball by throwing it
In a certain oscillating LC circuit the total energy is converted from electric energy in the capacitor to magnetic energy in the inductor in 1.30 µs. What is the frequency of oscillation
Identical point charges of +2.6 µC are fixed tothree of the four corners of a square. What is themagnitude q of thenegative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a netfo..
A comet of mass 1.3 1010 kg moves in an elliptical orbit around the Sun. Its distance from the Sun ranges between 0.545 AU and 79.0 AU. What is the eccentricity of its orbit
A man begins pushing a box from rest up a ramp angled at 22 degrees from horizontal, exerting a constant force of 500N, with what average force will it hit the ground
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