The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. The mass of the earth is 5.97 × 1024 kg, the radius of the earth is 6.38 × 106 m, and G = 6.67 × 10-11 N • m2/kg2
Assuming a circular orbit, (a) what is the period of the International Space Station's orbit? (b) what is the speed of the International Space Station in its orbit?
(a) 5.52 × 103 s (b) 7.69 × 103 m/s
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Groombridge 34 is an M1 V star. Based on this information, which of the following are true? I. Groombridge 34 has a surface temperature that is less than the Sun. II. Groombridge 34 has a mass that is greater than that of the Sun. III. Groombridge 34 is less luminous than the Sun. IV. Groombridge 34 is located near the middle of the H-R diagram
a. I & II b. II & IV c. I & IV d. I & III e. II & III
The atomic nuclei of the same element always have the same number of protons
Indicate whether the statement is true or false
Addition polymers are formed from
a. diacids only. b. alkenes. c. dialcohols only. d. diacids and dialcohols together.
Which of the above images represents a solution of the strongest acid (HA)?
A) A B) B C) C D) All of the above are strong acids. E) None of the above are strong acids.