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Consider the human eye to be composed of a thin lens of uniform index of refraction n = 1.42, with fluid of n = 1 inside, with the light-receptive cells a distance 25.5 mm from the lens. The eye can "focus" on different distances by changing the radius of curvature of its lens.
1) Find the radius of curvature for this lens when you are looking at very distant objects.
2) Find the radius of curvature for this lens when you are looking at an object a distance of 82 mm from your eye's lens.
At some point between the earth and the sun the net gravitational force is zero. How far is this point from the center of the earth
A sample of 10.0 mCi decays 1.2% in a single day. What is the activity after 30 days?
A single-turn current loop, carrying a current of 4.82 A, is in the shape of a right triangle with sides 72.8, 121, and 141 cm. The loop is in a uniform magnetic field of magnitude 57.9 mT whose direction is parallel to the current in the 141 cm side..
Find out the magnitude of the friction force acting on the case. Laser light with a wavelength = 680 illuminates a pair of slits at normal incidence. What slit separation would produce first-order maxima at angles of 40 from the incident direction.
A woman stands at the edge of a carousel that is rotating without friction at 0.80 rad/s. The carousel has a radius of 2.0m and a moment of inertia of 600 kg m2. What is now the angular speed of the carousel
A person pushes a 16.2-kg shopping cart at a constant velocity for a distance of 27.5 m on a flat horizontal surface. She pushes in a direction 32.3 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the mag..
A ruby laser emits an intense pulse of light that lasts a mere 30 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 200 mJ. (A) How many photons are emitted in each pulse? (B) What is the rate of photon emission, in photons pe..
Omega resistor using a voltmeter having an internal resistance of 10.0 Omega. Elucidate what is the potential difference does the voltmeter measure across the 5.00 Omega resistor?
A system has a heat source supplying heat at a rate of 149 W and is doing work at a rate of 104.3 W. At what rate is the internal energy of the system changing
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 1.6 cubic meters of sea water. What is the buoyant force acting on the object
the uniform beam below is 4.0meters long and has mass 30.0kg. Find the tension in the rope and the force exerted by the building on the beam by the building
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