Essay
An object of constant mass is projected away from the earth with initial velocity in a direction perpendicular to the earth's surface. Assuming there is no air resistance and considering the variation of the earth's gravitational field as a function of the altitude
above the earth's surface, the velocity of the object satisfies the differential equation
, where
is the radius of the earth.
A) Solve for the velocity as a function of
.
B) What is the maximum altitude of the object if its initial velocity is
?
C) Find the escape velocity, that is, the least initial velocity for which the body will not return to the earth.
(Hint: find such that
.)
Correct Answer:

Verified
Correct Answer:
Verified
Q39: Solve the initial value problems.<br>A) <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg"
Q40: The differential equation <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="The differential
Q41: Which of the following graphs depicts possible
Q42: Match the differential equation with its slope
Q43: Solve the initial value problem. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg"
Q45: Solve the linear equations.<br>A) <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg" alt="Solve
Q46: A 1200-gallon tank initially contains 500 gallons
Q47: Match the direction fields with their differential
Q48: Consider the initial value problem. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5596/.jpg"
Q49: Bees in a certain region are born