T Tauri stars are believed to be young, high-mass main-sequence stars
a. True
b. False
Indicate whether the statement is true or false
False
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Energy Levels: When an electron jumps from an orbit where n = 4 to one where n = 2
A. a photon is emitted. B. a photon is absorbed. C. two photons are emitted. D. two photons are absorbed. E. None of the given answers are correct.
What formation does a shield volcano have?
What will be an ideal response?
Beings on spherical asteroid ? have observed that a large rock is approaching their asteroid in a collision course. At 7514 km from the center of the asteroid, the rock has a speed of 136.0 m/s and later at 2823 km it has a speed of 392.0 m/s
Use energy conservation to find the mass of asteroid ?. You can neglect any effects due to the parent star of the asteroid. (G = 6.67 × 10-11 N ? m2/kg2) A) 4.582 × 1021 kg B) 9.164 × 1027 kg C) 6.112 × 1028 kg D) 4.582 × 1020 kg
A thin converging lens is found to form an image of a distant building 24 cm from the lens. If an insect is now placed 16 cm from this lens, how far FROM THE INSECT will its image be formed?
A) 96 cm B) 32 cm C) 48 cm D) 64 cm E) 72 cm