What does the wavelength of the peak labeled 6 tell us about Mars?
A) its color
B) its surface temperature
C) its chemical composition
D) its orbital speed
B) its surface temperature
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Newtonian gravity is often called universal mutual gravitation because every particle with mass in the Universe must attract every other particle
a. True b. False Indicate whether the statement is true or false
Which of the following Period 4 elements has the largest atom?
a. Kr b. Ga c. Ca d. Br
It is an advantage for an automobile engine to run at a high temperature because
A. it allows the use of lighter engine components made from aluminum. B. a high operating temperature cools off the fuel before ignition. C. its efficiency is higher, since the temperature difference is what dictates efficiency. D. gasoline only ignites under high temperature conditions.
A nearsighted person has a near point of 12 cm and a far point of 17 cm
If the corrective lens is 2.0 cm from his eye, (a) what lens power will enable this person to see distant objects clearly, and (b) what then will be the new near point of his eye?