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For the eye we can model the lens of a spherical refractor. The image distance is set by the length to the retina (Si=1.80).
a. Find the focal length of the eye for an object that is 0.65m from the eye.
b. Given the index of refraction for the lens of 1.38 find the radius od the lens for this configuration.
If a negative charge is initially at rest in an electric field, will it move toward a region of higher potential or lower potential? What about a postive charge? How does the potential energy of teh charge change in each instance?
A hill that has a 15.8 % grade is one that rises 15.8 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
A bag of cement of weight 375 N hangs from three wires as suggested in Figure P5.18. Two of the wires make angles θ1 = 55.0° and θ2 = 25.0° with the horizontal. If the system is in equilibrium, find out the tensions in the wires.
An unstable particle with a mass equal to 3.34 x10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.983c and -0.863c, respectively. Discover the masses of the fragments. (Hint: Conserve both momentu..
imagine that we have a string 1.5 meters long that is fixed at both ends. what is the frequency of the normal mode of the strings oscillation that has 3 antinodes
Calculate the force of gravity on a spacecraft 32000 km (5 earth radii) above the Earth's surface if its mass is 1800 kg. N (toward the earth)
A guitar string has a fundamental f=500 Hertz, find the frequency that will set string into resonant vibration
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
an electric field of 9.15 x 105 vm is desired between two parallel plates each of area 26.0 cm2 and separated by 2.45
A proton (charge e = + 1.60 x 10-19 C, mass m =1.67 x 10-27 kilogram) accelerates from rest by crossing a potential difference V = 3.00 Volt, Compute the distance rmin between the proton and the ion at the moment of closest approach
According to recent typical test data, a Ford Focus travels 0.280mi in 19.9s , starting from rest. Find the magnitude of this car's acceleration while braking
A light beam traveling in the negative z direction has a magnetic field B=(3.02 x 10-9T) x + (-5.28 x 10-9T) y at a given instant of time. The electric field in the beam has a magnitude of1.82 N/C at the same time.
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