The three main components of the Milky Way galaxy are the ________, ________, and ________

Fill in the blank(s) with correct word


disk; bulge; halo

Physics & Space Science

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The type of radiation that is emitted when the electron in a hydrogen atom experiences a spin flip is a (n) _______________

Fill in the blank(s) with correct word

Physics & Space Science

Listed following are characteristics of the atmospheres of Venus, Earth, and Mars. Match each atmospheric characteristic to the appropriate planet.

Physics & Space Science

Refraction results from differences in light's

A) frequency. B) incident angles. C) speed. D) all of the above E) none of the above

Physics & Space Science

An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1 000 m, but the speed remained the same, by what factor would its centripetal acceleration change?

a. 0.25 b. 0.50 c. 1.00 d. 2.00 e. 4.00

Physics & Space Science