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Calculate the acceptance cone angle for a fiber optic cable that has an index of 1.70 for the fiber core and a 1.47 index for the cladding. What is the acceptance cone angle
An infinitely long wire consists of two semi-infinite straight segments connected by a quarter circle bend. find the magnetic field at the center of the circle
Two soccer players start from rest, 43 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
In a shuffleboard game, the puck slides a total of 12 m before coming to rest. what was the initial speed of the puck
A wave traveling in the +x direction has an amplitude of 0.186 m, a speed of 3.27 m/s, Write the equation of the wave
The human body has a surface area of approximately 1.8 m^2, a surface temperature of approximately 30 degrees celsius, how many photons per second does the body emit
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor, How much charge can the cloud hold before the dielectric strength of the air is exceeded
An object is 2 m from the front side of a 1 m focal lenth converging lens. A second converging lens with focal length 2 m is placed 1 m from the first on the opposite side from the object. What is t
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha
A telephoto lens consists of a converging front lens of focal length f1 and diverging back lens of focal length f2 separated by a distance d. Compute the effective focal length of the lens system
The magnetic field in the region between the poles of an electromagnet is uniform at any time, but is increasing at the rate of 0.060 T/s. What is the magnitude of the induced emf
a moving rod is observed to have a lenght of 2m and to be oriented at an angle of 30 degrees with respect to the direction of motion. what is the orentation angle in the proper frame
Two equal, but oppositely charged particles are attracted to each other electrically. evaluate the magnitude of the charges
when a photoelectric surface is illuminated with f 437 nm , the stopping potential 1.67 v, what is the maimum speed of the ejected electrons
a double-slit arrangment prduce bright interference fringrs that are seprated by 2.60 mm when the wavelengt is 589nm. what is the bright fringe separation
an electron in a hydrogen makes a transition between levels and emits a photon with a frequency of 6.91*10^14 hz . find is the electron jumping to higher or lower level
The isotope 226 Ra Alpha decays. its measured atomic mass is 226.02541 amu, the daughter nucleus has a mass of 222.01758 amu and helium has atomic mass 4.0026 amu. calculate the kinetic energy of th
An archaeologist uses carbon dating to find the age of some ancient fossils. Determine the fossil age
If we imagine an electron as orbiting the proton, with the orbit of radius 5 x 10 ^-11 m, what is the total energy of the atom
You throw a ball straight down from an apartment balcony to the ground below. find the height of the balcony
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 5.35 m/s2 over a distance of 18.8 cm. Find the total time the block is in motion
a molten plastic flows out of a tube that is 8.0 centimeters long at a rate of 13cm^3/min, find the viscosity of the plastic
A fictional spaceship accelerates at a constant rate of 0.104 m/s2. How long would it take to reach the moon, 4.08 108 m away
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 4.55 m/s2. how long does it take to stop and how far does it travel
A rod moving in the positive x direction is measured by a stationary observer to have a length of 10.0meters, Find the speed of the second observer as measured by the stationary observe