How do head-tail radio galaxies reveal their motion?
What will be an ideal response?
Their bipolar jets shock the intergalactic medium and trail behind the moving galaxy like the wake of a boat.
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The magnitude scale
a. originated just after the telescope was invented. b. can be used to indicate the apparent intensity of a celestial object. c. was devised by Galileo. d. is no longer used today. e. was used to determine the rate of precession.
A(n) ________ spectrum is created by a glowing, hot thin gas, such as M-42 in Orion
Fill in the blank(s) with correct word
A 1.0-g bead is at (-2.0 cm, 2.0 cm), a 2.0-g bead is at (2.0 cm, -4.0 cm), and a 3.0-g bead is at (2.0 cm, 0.0 cm). What are the coordinates of the center of mass of this system of beads?
What will be an ideal response?
A convex mirror with a focal length of –28.0 cm forms an image 11.3 cm behind the surface. If the object height is 2.00 cm what is the image height?
a. 1.19 cm b. 3.35 cm c. 1.35 cm d. 2.00 cm e. 0.807 cm