Answer:
1966 J
Explanation:
The work done by the hose on the balloon is equal to the elastic potential energy stored in it:
where
k = 130 N/m is the spring constant
x = 5.50 m is the stretching of the hose before it is being released
If we substitute these numbers into the equation, we find:
So, the work done is 1966 J.
Answer:
The magnitude and direction of the resultant is 8.66 N and south of East.
The magnitude and direction the equilibrant is 8.66 N and North of West respectively.
Explanation:
Let
= Angle between P and Q =
Magnitude of resultant
Direction is given by
The magnitude and direction of the resultant is 8.66 N and south of East.
The magnitude and direction the equilibrant is 8.66 N and North of West.
Because "velocity" means the speed and direction of the motion.
In circular motion, or motion on any curved path, the direction is constantly changing. So even if the speed isn't changing, the <em>velocity</em> is.
F = kq1q2/r²
F = 9.0(10^9)(10)(50)/20²
F = 1.125 * 10^10 N
The motivation behind why the vertical stature of the stairs is the main thing measured is that it uncovers to us how much gravity is up against the individual and their weight, so we require this data to decide how much vitality and power we have to get up the stairs.