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A near sighted woman has a far point placed 0.750 meter from one eye.
(a) If a corrective lens is worn 2 centimeter from the eye, determine what would be the necessary power of the lens for her to see distant object?
(b) Find what would be the necessary power if a contact lens were used?
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole. (b) Imagine adding electrons to the pin until the negative charge h..
Suppose that the numerical value of the initial speed of a rollercoaster is 12.00 m/s, the initial height is 300.0 m, and the mass of the coaster is1000.0 kg.
When jumping, a flea reaches a takeoff speed of 1.2 m/s over a distance of 0.46mm, What is the flea's acceleration during the jump phase and How long does the acceleration phase last
An incandescent light bulb produces light because current in a tungsten filament is trnsformed into other types of energy. identify the type of energy, other than light,produced by the incandescent light bulb. describe how this energy is directly res..
A cube of ice is taken from the freezer at -8.0 and placed in a 113 aluminium calorimeter filled with 306 of water at room temperature of 20.0. The final situation is observed to be all water at 15.0.
In a certain time, light travels 5.11 km in a vacuum. During the same time, light travels only 2.54 km in a liquid. What is the refractive index of the liquid
A 40 g ball of clay traveling east at 5 m/s collides with a 80 g ball of clay traveling 30 degrees south of west at 1 m/s. What are the speed and direction of the resulting 120 g ball of clay?
The systolic pressure is 0.158 atm and the diadtolic pressure is 0.150 atm in the heart. If the volume pumped in one heartbeat is 75cm3 calculate the work done in a heartbeat. Assume a simple dependence of pressure in a ventricle.
A converging lens with a focal length of 30cm and a diverging lens with a focal length of -52cm are 127cm apart. Calculate the distance between image and diverging lens
A space probe with a rest mass of 8.1×107kg and a speed of 0.50c smashes into an asteroid at rest and becomes embedded within it. what is the rest mass of the asteroid
a parallel-plate air capacitor is made from two plates 0.25 m2 in area spaced 1.5 cm apart. it is connected to a 38 v
A bucket of water with a mass of 2kg is attached to a rope that is wound around a cylinder. The cylinder has a mass of 3 kg and is mounted horizontally on frictionless hearings. The bucket is released from rest.
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