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Bifocal glasses are used to correct both nearsightedness and farsightedness at the same time. If the near points in the right and left eyes are 60.0 cm and 50.0 cm, respectively, and the far point is 175 cm for both eyes, what are the powers of the lenses prescribed for the glasses? Assume the glasses are worn 3.00 cm from the eyes.
The man hears the sound of the splash 7.10 s after he releases the rock from rest. How far below the top of the well is the surface of the water
How far did she actually swim
A 720 nm light bean in air hits the flat surface of a certain plastic and the bean is split into a reflected ray and a refracted ray. what is the index of refraction of the plastic
Native people throughout North and South America useda bola to hunt for birds and animals. A bola canconsist of three stones, each with mass m, at theends of three light cords, each with length l. Theother ends of the cords are tied together to fo..
Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary.
A photon with a wavelength of 3.90×10?13 m strikes a deuteron, splitting it into a proton and a neutron. Calculate the kinetic energy released in this interaction
A bicycle generator rotates at 1825 rad/s, producing an 18.0 V peak emf. It has a 1.00 cm by 3.00 cm rectangular coil in a 0.476 T field. How many turns are in the coil
If the magnitude of the magnetic force on a proton is F when it is moving at 16.5o with respect to the field, find what is the magnitude of the force
A narrow beam containing 2000 mono energetic photons is reduced to 1000 photons with a slab of copper 10-2 m thick. What is the total linear attenuation coefficient of the copper slab for these photons? If the thickness of the copper slab doubled, do..
An 0.8kg baseball with an initial velocity of 40m/s is hit with a baseball bat so that its recoil velocity is 60m/s in the exact opposite direction. what is the average force the bat puts on the ball
An astronaut living at a space station is in a constant state of free fall- the only force exerted on her and on the space station is the gravitational force due to the Earth. How can an astronaut determine her mass while on an extended stay in sp..
A car moving at 30.0 m/s is approaching a factory whistle that has a frequency of 500 Hz. find the apparent frequency of the whistle as heard by the driver
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