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Spica is a bright star with apparent magnitude in the V filter mv=.98 and a parallax angle of 0.0125 arcsec. Thus, Mv= -3.54. Spica has an apparent magnitude in the B filter mB=.68. Thus, the color index B-V= -0.3
Q) The color index of another bright star in our summer sky, Antares, is B-V=1.67. Is Spica hotter or cooler than Antares? Explain your answer (you should include some discussion of the properties of blackbody radiators in your answer).
After about 500 AD, Western Civilization became a "fusion" of the classical world (Greco-Roman civilization) and the Germanic peoples of northern and western Europe--how did this come about? What elements of Greco-Roman civilization survived to bec..
a 1.50 m section of it at one end is bent 90° in the negative z direction. Illustrate what is the total magnetic flux through the surface? Choose directions for the area vectors so that the flux through each surface is positive.
An object 2.0 cm high is placed 45 cm from a concave mirror of radius 10 cm and radius of curvature 60 cm. Find the location, size, and orientation of the image
When a Newton's ring aparatus is submerged in a liquid the diameterof the 8th dark ring decreases from 2.92 cm to 2.48 cm. What is the refractive index of the liquid?
question an airplane is flying at a speed 350 mihf at an altitude of one mile and passes directly over a radar station
a converging lens has a focal length of 8.00 cm, is the image enlarged or diminished in size, what is the image distance for an object placed 14.0 cm from the thin lens
Light of wavelength 500 nm is incident normally on a diffraction grating. What is the number of rulings per centimeter for the grating
The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to25 rad/s in 2.4 sec. Find through what angle did the propeller turn during this time
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball
Two Circular metal plates of radius 3.4 cm have parallel facesseparated by a distance of 0.5 mm, Find the change in energy stored in the capacitor
A point charge with charge q1 is held stationary at the origin. A second point charge q2 with charge moves from the point (x1, 0) to the point (x2,y2 ). How much work is done by the electrostatic force on the moving point charge? Express your answ..
a ball is launched directly upward from ground level with an initial speed of 18 ms. air resistance is negligible.a how
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