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The light shining on a diffraction grating has a wavelength of 495 nm (in vacuum). The grating produces a second-order bright fringe whose position is defined by angle of 9.34o. Determine how many lines per centimeter does the grating have?
a solenoid is designed to produce a magnetic field of 2.50times10?2 at its center. it has a radius of 1.70 and a length
dan climbs a flight stairs in 1.7 min. if he weighs 480 n and the stairs is 10 m from the ground how much power will he
If a piccolo has a length of 34 cm, what is the lowest frequency that it can play? Assume the piccolo is like a pipe that is open at both ends
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
A 2.30 kg object attached to a spring moves without friction and is driven by an external force given by F = (3.00 N) sin(2pt). If the force constant of the spring is 25.0 N/m, determine the period
A raindrop of mass 3.35 10 -5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle. As it falls 100 m,what is the work done on the raindrop (a) by the gravitational force and (b) by air..
Light is reflected from a transparent coffee table. When the angle of incidence is 52.2°, find the index of refraction of the material of the table
A hot-air balloonist, rising vertically with a constant velocity of magnitude v= 5.00 m/s, releases a sandbag at an instant when the balloon is a height h= 40.0 m above the ground. Compute the position of the sandbag at a time 1.50 s after its rele..
for a sphere e falls off with 1r2 for an infinite line charge e falls off with 1r for an infinite sheet of charge its
a 1.50 kg snowball is fired from a cliff 12.5 m high. the snowballs velocity is 14.0 ms directed 41.0 degrees above the
If a toaster is plugged into a source of alternating voltage with an rms value of 66.2 V, find the resistance of the toaster's heating element
a rigid tank is divided into two rooms by a membrane both containing water. room a is at 200 kpa ??0.5 m3kg va1 m3 and
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