Stellar models can easily be accomplished by using a simple hand calculator
a. True
b. False
Indicate whether the statement is true or false
False
You might also like to view...
The identities of dark energy and dark matter are
A) unknown at this time. B) subjects of intense astronomical interest. C) both of these D) neither of these
A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km. What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N ? m2/kg2)
A) 23 m/s B) 16 m/s C) 520 m/s D) 730 m/s
Which of the following best describes the inner workings of conductors?
1.Electrons collide at random, experiencing a net change of position equal to zero, except when exposed to an external electric field. 2.The electrons start at one electrode and travel directly to the other electrode, stopping there. 3.The electrons' drift speed depends only on the material of the conductor and not on the voltage difference applied to it. 4.None of these choices is correct.
Earth is made mostly of metals and rocks. Where did most of the elements that make up these materials (carbon, silicon, iron, etc.) form?
A) They were produced by the Big Bang. B) They were produced by chemical reactions in interstellar gas clouds. C) They were produced by stars. D) They were produced in our Sun. E) They were produced by nuclear fission of uranium and other radioactive materials in space.