Carla and Jenny Are Arguing About Whether or Not It

question 30

Multiple Choice

Carla and Jenny are arguing about whether or not it is possible to escape the gravitational field of the Earth. Carla shows Jenny a system where mass m is rE (not the Earth's radius) distant from Earth and rP (not planet P's radius) distant from planet P, the mass being on the line connecting the Earth and planet P. Carla states that the mass m has escaped if FP on m = -FE on m. Jenny disagrees. Which one, if either, is correct, and why?

• A)Carla, because the total gravitational force on m is zero at that point.
• B)Carla, because there is no gravitational force from Earth on m at that point.
• C)Carla, because there is no gravitational force on m from Earth when r > rE.
• D)Jenny, because there is a gravitational force on m from Earth no matter how great the distance from the Earth.
• E)Jenny, because the gravitational force from the Earth can only be blocked by a body that is larger than the Earth.

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Definitions:

Seasonal Trend

A pattern in data that repeats at regular intervals over time, typically within a year.

Indicator Variable

A variable that takes on values of 0 or 1 to indicate the absence or presence of a categorical effect that may influence dependent variables.

Seasonal Index

Seasonal index refers to a numerical value that is assigned to specific time intervals to measure the seasonal pattern or variation in a data set over a period.

Deseasonalized

Deseasonalized data refers to the removal of seasonal effects from a time series to better identify trends and other underlying patterns.