Which statement is correct about the relationship between the instantaneous speed and the magnitude of the instantaneous velocity?
A)
The average speed can be less than, greater than or equal to the magnitude of the average velocity.
B)
The instantaneous speed is always equal to the magnitude of the instantaneous velocity.
C)
The average speed is always less than or equal to the magnitude of the average velocity.
D)
The instantaneous speed is always greater than or equal to the magnitude of the instantaneous velocity.
E)
The average speed is always one-half the magnitude of the average velocity.
B
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Which of the following statements about Saturn's moon Titan is not true?
A) It rains liquid methane and ethane. B) Its atmosphere contains abundant oxygen. C) Its temperature is too cold for liquid water to exist on its surface. D) Its surface is hidden from view by a thick atmosphere. E) It orbits Saturn.
If the Earth rotated more slowly so that the length of a day was longer, the radius of a communications satellite in synchronous orbit would be ________.
Fill in the blank(s) with the appropriate word(s).
Experimenting is part of the scientific method
a. True b. False Indicate whether the statement is true or false
What is the most common depositional feature created by the work of the oceans?
What will be an ideal response?