Compared to a cluster containing type O and B stars, a cluster with only type F and cooler stars will be:
A) younger.
B) older.
C) further away.
D) more obscured by dust.
E) less obscured by dust.
B
You might also like to view...
If the speed of an object in circular motion is increased by a factor of 3, its centripetal acceleration for the same radius will be multiplied by a factor of
a. 0.111. b. 0.333. c. 1.73. d. 9. e. 3.
An iron ball and a wooden ball of the same size are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the
A) lighter wooden ball. B) heavier iron ball. C) both hit at the same time. D) not enough information
A proton is maintained at rest in the middle of a box that has no matter inside it other than the single proton
Assuming that the box is isolated from all external influences, which of the following would we expect to find at some other point X inside the box? A) an electric field B) a magnetic field C) Both of the above. D) an electric force E) All of the above.
Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. A watt is equal to 746 horsepower
Indicate whether the statement is true or false