Most stars are single stars like our own.
Indicate whether the statement is true or false.
Answer: False.
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What is the net power radiated by a little animal with a surface area of 0.075 m2 if his emissivity is 0.75, his skin temperature is 315 K, and he is in a room with a temperature of 290 K? (? = 5.67 × 10-8 W/m2 ? K4 )
A) 8.8 W B) 6.0 W C) 8.0 W D) 15 W E) 18 W
The largest units of geologic time are called ______________
Fill in the blank(s) with correct word
When the sum of the external forces and the sum of the external torques on a body are both zero, we can conclude that
a. the body is moving at constant velocity but is not rotating. b. the body is rotating at constant angular velocity but has no linear velocity. c. the body has neither linear nor angular velocity. d. the body may have constant linear or angular velocity, but not both simultaneously. e. the body may have constant linear or constant angular velocity, or both simultaneously.
____________________ is a measure of the light energy that hits one square meter in one second
Fill in the blank(s) with correct word