In the above cartoon image of Orion, where would you find the Orion nebula?
a. below the belt (i.e., three white stars) but above the lower right blue and lower left white stars
b. above the belt (i.e., three white stars) but below the upper red and the upper white stars
c. in the belt, that is, among the three white stars
d. outside the white lines
A
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A ________ is a region where jets of gas from young stars impact and heat the gas surrounding the young star.
A. bipolar outflow B. bok globule C. planetary nebula D. T Tauri star
The volume coefficient of thermal expansion for gasoline is 9.50 × 10-4 per degree C. By how much does the volume of 1 L of gasoline change when the temperature rises from 20.°C to 40.°C?
A) 37. cm3 B) 6.0 cm3 C) 19. cm3 D) 24. cm3 E) 12. cm3
The period before the separation of the gravitational force is the Planck Epoch
Indicate whether the statement is true or false
When an object is dropped from a tower, what is the effect of the air resistance as it falls?
a. does positive work b. increases the object's kinetic energy c. increases the object's potential energy d. None of the above choices are valid.