All stars on the main sequence
A) are in the process of forming
B) are mature stars that are fusing hydrogen into helium in their cores
C) are dead stars
D) have exhausted their nuclear fuel and are in the process of dying
B
You might also like to view...
Parallel-Plate Capacitor: Two parallel square metal plates that are 1.5 cm apart and 22 cm on each side carry equal but opposite charges uniformly spread out over their facing surfaces. How many excess electrons are on the negative surface if the electric field between the plates has a magnitude of 18,000 N/C? (k = 1/4??0 = 9.0 × 109 N ? m2/C2, e = 1.6 × 10-19 C)
What will be an ideal response?
What is meant by an ideal or perfect gas?
What will be an ideal response?
____________ is the closest planet to the Sun
Fill in the blank(s) with correct word
In Figure 7.7, a 5.00-kg block is moving at 5.00 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m
What is the speed of the block when the spring is compressed to only one-half of the maximum distance?