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The Big Bang theory states that the beginning of the universe was accompanied by a huge burst of photons. Those photons are still present today and make up the so-called cosmic microwave background radiation. The universe radiates like a blackbody with a temperature of about 2.7 K.
Calculate the peak wavelength of this radiation.
The charges and coordinates of two charged particles held fixed in the xy plane are: q1=2.90 ?C, x1=3.900 cm, y1=8.700 cm, What are the x and y coordinates of a third charge q3=3.00 ?C
Compute the average intensity
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. This monument rises to a height of 192 m. You estimate your line of sight with the top of the arch to be 4.5° above the horizontal. Approxim..
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
A Young's double-slit experiment is performed using light that has a wavelength of 638 nm, Calculate the angle that locates the first-order bright fringes on the screen
what is the Tension in the string, distance of spheres from one another at equilibrium, the charge on each sphere.
What is the rms speed of nitrogen molecules at a temperature of 55 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
the solar constant is the radiant flux density from the sun at the earth's surface and is about 0.135 W/cm^2 when the sun is directly overhead, find the amplitude of the E and B fields
A world class sprinter accelerates to his maximum speed in 3.80 s. He then maintains this speed for the remainder of a 100 m race, finishing with a total time of 10.30 s. What is the runner's average acceleration throughout the first 3.80 s.
An electron passes through a point 3.75 cm from a long straight wire as it moves at 36.1% of the speed of light perpendicularly toward the wire. Find the magnitude of the electron\'s acceleration at that point
The convex lens of a copy machine has a focal length of 25 cm. A letter to be copied is placed 40.0 cm from the lens.
An automobile tire has a radius of 0.330 m, and its centre moves forward with a linear speed of v= 15.0 m/s. Find the angular speed of the wheel.
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