Henrietta Leavitt discovered the period-luminosity relationship for ____________________
Fill in the blank(s) with correct word
Cepheid variables
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Which planet can we see occasionally transit across the face of the Sun?
A) Mercury B) Mars C) Jupiter D) Uranus E) all of the above
The ________ theory is thought to explain the formation of our solar system
Fill in the blank(s) with correct word
What is the source of Jupiter's intense magnetic field?
A) Charged particles trapped in Jupiter's solid iron core similar to Earth B) Liquid metallic hydrogen swirling in the rapidly spinning mantle C) The ionized sulfur ejected into a torus around Jupiter by Io D) The auroral displays in the polar regions, just like with the Earth E) A liquid iron and nickel outer core, just like the Earth's magnetic field
A diver shines an underwater searchlight at the surface of a pond (n = 1.33). At what angle (relative to the surface) will the light be totally reflected?
a. 47.3° b. 41.2° c. 51.1° d. 58.7° e. 49.8°