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A bar of sufficient length is pushed (without friction) along rails (of sufficient length) that diverge at a 15 degree angle (as shown.) The bar stays vertical throughout the push. The bar starts at the rail's vertex and is pushed at a steady 0.40 m/s to the left. If the magnetic field strength is 0.42 T, what is the average emf induced in the bar between the points which cross the rails in the first 5.0 s of the bar's travel?
Compute the De Broglie wavelength a) an electron with a kinetic energy of 100 eV, (b) a proton with a kinetic energy of 100 eV, (c) an electron in the first Bohr orbit of a hydrogen atom.
A top spins at 30 rev/s about an axis that makes an angle of 30 deg with the vertical. what is the precession rate
A ray in air is incident on a glass plate whose index of refraction is 1.68. Determine the angle of refraction is one-half the angle of reflection. The angle of refraction is closest to?
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
a bulb emits light uniformly in all directions. the average emitted power is 150w. at a distance of 5m from the bulb
A 2.0-m-diameter vat of liquid is 2.6m deep. The pressure at the bottom of the vat is 1.4atm. Determine what is the mass of the liquid in the vat?
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 14.5 m/s, What must be the horizontal distance between the saddle and limb when the ranch hand makes his ..
Light is an electromagnetic wave and travels at a speed of 3.00 x108 m/s. Find what is the frequency of this light
Consider a vibrating piano string. The string is under a tension T, has a length L and diameter d. What is the frequency f' for the second string
A singly charged ion of mass m is accelerated from rest by a potential difference ?V. It is then deflected by a uniform magnetic field (perpendicular to the ion's velocity) into a semicircle of radius R. What is the ratio of the masses of the ions
You walk 30 meter south and 30 meter east. Obtain the direction and magnitude of the resultant displacement both algebraically and graphically
A light ray of λ = 410 nmenters at an angle of incidence of 37.6o from air into ablock of plastic. What is the speed of the light inside the plastic
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