In an H-R diagram, stars with the smallest radius are found in the _________ of the diagram
a. center
b. upper left corner
c. upper right corner
d. lower left corner
e. lower right corner
d
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Spiral and irregular galaxies have active star formation
a. True b. False Indicate whether the statement is true or false
Impulse: A block of mass m = 34 kg and speed V is behind a block of mass M = 81 kg and speed of 0.50 m/s, as shown in the figure. The surface is frictionless and the blocks collide and couple. After the collision, the blocks have a common speed of 0.90 m/s. What is the magnitude of the impulse on the 34-kg block due to the collision?
A. 32 N ? s B. 14 N ? s C. 41 N ? s D. 57 N ? s E. 73 N ? s
How does distance between particles and particle motion change as a solid substance becomes a gas?
What will be an ideal response?
A mass attached to a spring vibrates back and forth. At the equilibrium position, the
A) velocity reaches zero. B) acceleration reaches a maximum. C) net force reaches a maximum. D) velocity reaches a maximum.