The composition of the interstellar dust suggests that it is formed primarily in the atmospheres of cool stars

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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Earth's magnetic field is generated in the iron-rich mantle

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

In the GUT, electromagnetism and the strong nuclear force are the last to appear

Indicate whether the statement is true or false

Physics & Space Science

Planet W-70 has a radius of 2.48 × 107 m and an escape velocity of 23,300 m/s. What is the mass of W-70? (G = 6.67 × 10-11 N ? m2/kg2 )

A) 1.01 × 1026 kg B) 2.02 × 1026 kg C) 3.03 × 1026 kg D) 4.04 × 1026 kg E) 5.05 × 1026 kg

Physics & Space Science

Light not only has wavelike properties, but also has particle-like properties. What are these "particles" of light called?

a. quarks b. wavicles c. photons d. etherons

Physics & Space Science