The main fuel for producing energy in the center of the sun is
A) helium.
B) hydrogen.
C) uranium.
D) any radioactive material.
E) oxygen.
B
You might also like to view...
In the Northern Hemisphere, between what dates does the location of the Sun's rising and setting shift a little farther south each day?
A. from June 21 until December 21 B. from September 22 until March 20 C. from March 20 until September 22 D. from December 21 until June 21
A 50-cm3 block of wood is floating partially submerged in water, and a 50-cm3 block of iron is totally submerged in water. Which block has the greater buoyant force on it?
A) the wood B) the iron C) Both have the same buoyant force. D) The answer cannot be determined without knowing the densities of the blocks.
The dark age started as the first stars began to form
Indicate whether the statement is true or false
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is NaN N. The buoyant force has a magnitude of NaN N and acts vertically upward
An external force acting on the ball maintains it in a state of rest. The external force, including direction, is closest to: A) NaN N, downward B) NaN N, upward C) NaN N, upward D) NaN N, upward E) NaN N, downward