What are five landforms formed by river erosion
2 answers:
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Explanation:
U = 40m/s
V = 30m/s
T = 5 sec
A = ?
since it's decreasing in speed, The acceleration will be " - 2.0ms^-2 " or " - 2.0m/s^2 "
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The mass of the second object is
Explanation:
The magnitude of the gravitational force between two objects is given by :
where :
is the gravitational constant
m1, m2 are the masses of the two objects
r is the separation between them objects
In this problem we have:
F = 1100 N is the force
is the mass of object 1
r = 30 m is the distance between the object
Re-arranging the equation for , we find the mass of the second object:
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Using geometrical arguments, we can see that the angle of the inclined plane 
is equal to the angle between Fg and the perpendicular force.
But the perpendicular force is the projection of Fg along the perpendicular axis, and Fg=mg, so the correct answer is
<span>C) F=mg cosΘ </span>
But the perpendicular force is the projection of Fg along the perpendicular axis, and Fg=mg, so the correct answer is
<span>C) F=mg cosΘ </span>