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A charge of 18 nC is uniformly distributed along a straight rod of length 3.0 m that is bent into a circular arc with a radius of 2.5 m. What is the magnitude of the electric field at the center of curvature of the arc? please show work.
a narrow beam of white light is incident on a sheet of quartz. thebeam disperses in the quartz with red light
As a baseball is being thrown, it goes from 0.0 to 40.0 ms in 0.34 s, What is the acceleration of the baseball
Four point charges have the same magnitude 2.2*10 -12 and arefixed to the corners of the square that is 4.3 cm on a side. Determine the magnitude of the electric field that exists at the center of the square
A simple pendulum has a period of 3.74 s. The acceleration of gravity is 9.8 m/s^2 What is its length? What would its period be on the Moon
Four rays of light are incident on a surface of water. Their angles of incidence are 20, 30, 45, y 60 degrees. Calculate the angle of refraction for each ray
A 0.55 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1550 J and at its highest point is135m above the launch point. What was the vertical component of its velocity just after launch
An electron that has an energy of approximately 62 eV moves between rigid walls 1.4 nm apart. Find the quantum number n for the energy state that the electron occupies.
A mass on a spring bobs up and down over a distance of 25 cm from the top to the bottom of its path twice each second. What are its period and amplitude
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3. What is the winding density n of the solenoid
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber, If a sample of gold with a mass of 2.477g, is pressed into a leaf of 4.116 ?m thickness, what is the area (in m2)..
a guitar of bridge length l 0.76m has new strings put on it. the low e string has a linear density of p 0.08 kgm
question1-what would be direction of the surface winds that would exist in the tropics mid-latitudes and polar regions
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