Temperature Scales: What is absolute zero on the (a) Celsius scale and (b) on the Fahrenheit scale?
What will be an ideal response?
(a) -273°C (b) -460°F
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The choices below each describe the appearance of an H-R diagram for a different star cluster. Which cluster is the youngest?
A) The diagram shows main-sequence stars of every spectral type except O, along with a few giants and supergiants. B) The diagram shows main-sequence stars of spectral types G, K, and M, along with numerous giants and white dwarfs. C) The diagram shows main-sequence stars of all the spectral types except O and B, along with a few giants and supergiants. D) The diagram shows no main-sequence stars at all, but it has numerous supergiants and white dwarfs.
The in-plane shear strength of a uniaxial composite material is approximately _________the magnitude of the transverse tensile strength.
Fill in the blank(s) with the appropriate word(s).
Most of the visible light from the Sun originates in the photosphere
a. True b. False Indicate whether the statement is true or false
Ralph walks 3 m to the left in 2 seconds, then 4 m to the right in 3 seconds. Next, he stops for 3 seconds, and finally walks 5 m to the left in 4 seconds
Ralph's final position is closest to:
1.0 m 2.2 m 3.4 m 4.6 m 5.8 m 6.10 m 7.12 m 8.14 m 9.The negative of one of the choices above 10.Impossible to determine