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A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. She borrows a friend's glasses but the borrowed glasses make things worse; that is, the person can now focus only on objects that are within 1.85 m away. What is the focal length of the borrowed glasses? please show your work
A highway is to be built between two towns, one of which lies 50.0 km south and 82.0 km west of the other. find at what angle would this highway be directed
A particle of charge 12uC and mass 3.8x10^-5kg is released from rest inside a parallel plate capacitor from the positive plate. How long does it take the particle to reach the negative plate
The cone of a loudspeaker vibrates in SHM at a frequency of 262 Hz. The amplitude at the center of the cone is xm = 1.5 x 10-4m, What is its maximum velocity and acceleratio
A generator uses a coil that has 140 turns and a 0.50-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. assume that each turn of the coil is a square (an approximation), find out the length of the..
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.06 X 106 V, What is the speed of the ?-particle
An archer shoots an arrow with a velocity of 45m/s at an angle of 50 degrees with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed required to ..
A circular coil, with radius of 10 cm, and 25 turns, rotates in a constant magnetic field of strength 2.4 T, If the magnetic field that the coil is in points down the page, which direction does the coil rotate
What must be the magnifying power of the eyepiece if the total magnification of the specimen is 100X
Fill a glass with water. Look down through the water, and then through the glass to your hand on the outside. Can you see it? Tip the glass towards you and watch your hand disappear. Why? Do you know what physical phenomena this observation is rel..
A 9.0×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.9×10-5 s, Find the maximum displacement of the particle
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
W hat is lumberjacks speed relative to the shore
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