The Hubble Space Telescope is the largest telescope ever built.
Answer the following statement true (T) or false (F)
False
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A straight wire is carrying a current upward. Observed from above (i.e., looking downward towards the wire), the magnetic field lines are
A. radially outward. B. radially inward. C. forming clockwise circles. D. forming counter-clockwise circles. E. directed toward the observer.
The Milky Way Galaxy is alone, that is, not a part of a group or cluster
a. True b. False Indicate whether the statement is true or false
Where did helium come from the early Universe?
A. The early Universe was so hot and dense that fusion of protons (hydrogen) into helium could occur. B. Photons bombarded hydrogen atoms and broke them up into helium atoms. C. Helium was formed in the cores of stars formed in the early Universe. D. Helium was not formed in the early Universe, because only neutrons were present.
A high-voltage transmission line carries 500 A at 700,000 V. What is the power carried by the line?
a. 100 MW c. 700 MW b. 350 MW d. 70 MW