HII regions are found near stars cooler than 25,000 K because large amounts of ultraviolet photons would totally destroy the hydrogen atoms in the gas

Indicate whether the statement is true or false


F

Physics & Space Science

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The distance between adjacent galaxies in a typical cluster is about ________ times the size of a typical galaxy

A) two or three B) five or less C) ten to twenty D) a hundred E) a thousand

Physics & Space Science

The energy attributed to an object by virtue of its motion is known as ________

A) radiative energy B) kinetic energy C) potential energy D) mass-energy

Physics & Space Science

If you walk towards a mirror at a certain speed, the relative speed between you and your image is

A) half your speed. B) your speed. C) twice your speed. D) none of the above

Physics & Space Science

The finite wire shown below has a uniformly distributed negative charge. Which of the arrows below is closest to the direction of the field vector that the wire produces at point P? (Point to a letter on the back cover with two fingers to specify a double-letter answer.)



A. A
B. B
C. C
D. D
E. AA
F. BBG. CC
H. DD

Physics & Space Science