A 10 solar mass star is about ten times more luminous than a 1 solar mass star
Indicate whether the statement is true or false
FALSE
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Collisions in Two Dimensions: A 900-kg car traveling east at 15.0 m/s suddenly collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together after the collision. In what direction does the wreckage move just after the collision?
A. 36.9° N of E B. 42.0° N of E C. 45.0° N of E D. 53.1° N of E E. 48.0° N of E
Virtually all the carbon-rich dust in the plane of the galaxy originated in
A) low-mass stars. B) planetary nebulae. C) high-mass stars. D) brown dwarfs. E) white dwarfs.
In a nuclear fusion reactor, the Lawson criterion prescribes the necessary conditions, as related to density and confinement time of the plasma fuel, in order that the process produces a net power output. If the fuel density were doubled, by what factor would the required confinement time change?
a. 0.25 b. 0.50 c. 1.4 d. 2.0
Some food costs may rise in the future as a consequence of the increased use of which food-based fuel?
a. Ethanol b. Gasoline c. Oil d. Coal