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A farsighted man uses eyeglasses with a refractive power of 1.90 diopters. Wearing the glasses 0.03 m from his eyes, he is able to read books held no closer than 0.25 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters
Considering only the gravitational forces that the spheres exert on each other, illustrate what is the magnitude of the initial acceleration of the third sphere?
A 47.60 g golf ball is driven from the tee with an initial speed of 56.0 m/s and rises to a height of 28.4 m. (a) avoid air resistance and determines the kinetic energy of ball at its highest point. (b) What is its speed while it is 8.02m below it..
A glass windowpane in a home is 0.62cm thick and has dimensions of 0.9m multiplied by 1.6 m. On a certain day, the indoor temperature is 20 °C and the outdoor temperature is 0 °C.
a soil below the water table has a density of 120 lb/ft^3 and a void ratio of .82. determine the specific gravity of solids
In a two-slit experiment a third order bright fringe is observed at an angle of 7.10°. If the wavelength of light is 595 nm, what is the slit separation?
290 Kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
A proton is travelling to the right at. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision? What is the direction of the pro..
Coherent light with wavelength 601 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3.00 from the slits.
A block of weight W can slide on a horizontal surface. A force of W/n1 is applied to the right that causes the block to accelerate with acceleration equal to g/n2. g is the acceleration by reason of gravity. If the coefficient of kinetic friction is ..
A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. If the battery is attached in series to a 21.5-ohms resistor, what is the actual voltage supplied by the battery?
At what angle should the road be banked. The charge on the inner shell is 4.59 x 10- 8 C and that on the outer shell is 2.15 x 10- 8 C. Find out the electric field (in N/C) (a) at r = 12.7 cm and (b) at r = 37.3 cm.
On a cello, the string with the largest linear density (1.54 10-2 kg/m) is C string. This string produces a fundamental frequency of 63.4 Hz and has the length of 0.795 m between the two fixed ends. Find tension in the string.
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