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A laser is mounted in air, m above the edge of a large, horizontal pane of crown glass (n = 1.520), as shown in thedrawing. The laser is aimed at the glass in such a way that the reflected beam is 100% polarized. Detemine the distance d between the edge of the pane and the point at which the laser beam is reflected.
A disk of radius R has a hole in the center of radius a (like an audio compact disk). If the disk holds a uniform surface charge ?, determine the expression for the electric field at a point P that lies along the central perpendicular axis of the dis..
a diver springs upward with an initial speed of 1.9 ms from a 2.5 m board.a find the velocity with which he strikes the
A spring with a constant 150 N/m is attached to a block with a mass 1.5 kg. What is the maximum displacement the mass will achieve
a 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block sticking to it. the system
A 4.5 volt battery is connected to a buld with a resistance of 1.6 ohm. How many electrons leave the battery per second
A cylindrical cable with 1.59 x 10-8 m resistivity carries a current of 1000A. There is a potential difference of 1.9 x 10-4 V between two points on the cable that are 0.32 m apart. What is the radius of the cable?
a hot air balloon rises from the ground with a velocity of 2.0 msyhat. a champagne bottle is opened to celebrate
The downward acceleration of a 74-kg stuntwoman near the end of a fall from a very high building is 5.5m/s2
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. Assume that these protons are incident on the Earth's atmosphere from all directions at a rate of 1090. protons per square meter per second.
A rocket is accelerated to speed 45300 m/s near Earth'ssurface (where Earth's radius is Re= 6370 km.), and it then coasts upward. Find the ratio of its speedto the escape speed on Earth
In open heart surgery a much smaller amount of energy will defibrillate the heart, What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 55.0 J of energy
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