For the following exercises, find the slope of the lines that pass through each pair of points and determine whether the lines are parallel or perpendicular. 29. The formula F = m v 2 R relates force (F), velocity (v), mass (m) , and resistance (R). Find R when m = 45 , v = 7 , a n d F = 245
For the following exercises, find the slope of the lines that pass through each pair of points and determine whether the lines are parallel or perpendicular. 29. The formula F = m v 2 R relates force (F), velocity (v), mass (m) , and resistance (R). Find R when m = 45 , v = 7 , a n d F = 245
For the following exercises, find the slope of the lines that pass through each pair of points and determine whether the lines are parallel or perpendicular.
29. The formula
F
=
m
v
2
R
relates force (F), velocity (v), mass (m) , and resistance (R). Find R when
m
=
45
,
v
=
7
,
a
n
d
F
=
245
The force F exerted by the wind on a window varies jointly with the area A of the window and the square of the velocity of the wind. If the force on a window if 20 square feet is 10 pounds when the wing velocity is 5 mph, find the force on a window of 24 square feet when the wing velocity is 8 mph
The repulsive force f between the north poles of two magnets is inversely proportional to the square of the distance d between them. If the repulsive force is 24 lb when the distance is 15 in. find the repulsive force when the distance is 5 in.
One end of a ladder is on the ground. The top of the ladder rests at the top of a 12-foot wall. The wall is 3 horizontal feet from the base of the ladder. What is the slope of the line made by the
ladder? (Assume that the positive direction points from the base of the ladder toward the wall.)
t/ft
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