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An electron is moving at a constant speed of 15 m/s on a circle of radius 2.2 m.
Express the circumference of the circle C in terms of its radius R.
Express the time interval Δt for the electron to finish one circle in terms of the circumference C and speed v.
Express the current I on the circle through the charge e and time interval Δt.
Calculate the numerical value of I in A.
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 1.10 102 Hz has two strings at this frequency. If one string slips from its normal tension of 5.90 102 N to 5..
If light is shown from a sheet of glass toward water and just skims the boundary between the glass, at what angle was the light aimed toward the water
question a charge of -1.0 microc is located at the origin a second charge of 3.4 microc is located at x 0 y 0.1 m and
A small steel sphere of mass 0.40 kg is attached by a 0.50 m long cord to a swivel pin set into the surface of a friction-less table top. compute the tension in the cord
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 192m/s and a frequency of 200Hz. Calculate the maximum transverse velocity of the string at this point
A supertanker filled with oil has a total mass of 1.04 109 kg. If the dimensions of the ship are those of a rectangular box 235 m long, 76 m wide, how far the bottom of the ship is below sea level
A camera has a lens with a focal length of 25.6 cm. how far from the film should the lens be placed
Determine the maximum deceleration it will experience and at what altitude? The capsule's BC is 1000 kg/m2 - what is the average drag acceleration ( in g's) we must attain?
A parallel-plate air-filled capacitor having area 41.0 cm2 and plate spacing 2.70 mm is charged to a potential difference of 360. V. calculate the energy density between the plates
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.2 mm, What is the resistance ratio RA/RB , measured between their ends
a person is 1.8 m tall, standing upright. His heart is 1.4m above his feet. He is doing a head stand. Calculate the hydrostatic blood pressure in his feet
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