The time a protostar takes to contract from a cool interstellar gas cloud to a main-sequence star depends on its _____
A) volume
B) luminosity
C) mass
D) temperature
C
Physics & Space Science
You might also like to view...
What are extrusive rocks?
What will be an ideal response?
Physics & Space Science
An AC generator consists of 6 turns of wire. Each turn has an area of 0.040 m2 . The loop rotates in a uniform field (B = 0.20 T) at a constant frequency of 50 Hz. What is the maximum induced emf?
a. 13 V b. 2.4 V c. 3.0 V d. 15 V e. 4.8 V
Physics & Space Science
X-ray bursters are caused by black holes
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
An object is pulled with two forces, 10 N northward and 15 N southward. The direction of the net force is to the
A) north. B) south. C) east. D) west. E) none of the above
Physics & Space Science