In the collapsing cloud fragment stage (stage 2 ) of star formation, the size of the cloud fragment is about:
A) the size of the solar system.
B) 10 times the size of the solar system.
C) 100 times the size of the solar system.
D) 1,000 times the size of the solar system.
E) 10,000 times the size of the solar system.
C
You might also like to view...
The weight of air in a column 1-m2 in cross section that extends from sea level to the top of the atmosphere is
A) 101 N. B) 10,100 N. C) 101,000 N. D) 101,000,000 N.
The square plates of a 3000-pF parallel-plate capacitor measure 40 mm by 40 mm and are separated by a dielectric that is 0.29 mm thick and completely fills the region between the plates
What is the dielectric constant of the dielectric? (?0 = 8.85 × 10-12 C2/N ? m2) A) 61 B) 56 C) 50 D) 45 E) 67
Series/Parallel Circuits: When unequal resistors are connected in parallel in a circuit,
A. the same current always runs through each resistor. B. the potential drop is always the same across each resistor. C. the largest resistance has the largest current through it. D. the power generated in each resistor is the same.
A steel stack of 4 m diameter is 60 m high and is used to exhaust gases that are at an average temperature of 600ºC. The stack wall temperature is 1000 when the surrounding air temperature is 20ºC. Estimate the stack gas velocity.
What will be an ideal response?