Answer:
Explanation:
When at rest, initial velocity = 0
In 2 seconds, final velocity = 2 m/s
Acceleration = (final velocity - initial velocity) / time
= (2 - 0) / 2
= 1 m/s^2
Answer:
the number of skyscrapers in 5 different cities ( second choice)
The direction of the curl of magnetic field is determined by right hand thumb rule. Suppose you are holding a current carrying wire in your right hand such that the direction in which your thumb points is the direction of the current in the that wire then the fingers curled will determine the direction of the magnetic field. In B, the direction of current in the wire is towards ourself. Now, use right hand rule such that the thumb points towards yourself. The curled fingers rotate clockwise. Therefore, the magnetic field is in anti-clock direction
Answer:
<em>W= 47</em>
Explanation:
Given:
m = 72 kg
F = 165 N along horizontal
s = 2.8 m
\mu = 0.21
The net force acting on the box is
W= 165-(0.21 * 72 * 9.81)) * 2.8
W= 46,68384
W= 47
Answer:
A) 12P
Explanation:
The power produced by a force is given by the equation
where
W is the work done by the force
T is the time in which the work is done
At the beginning in this problem, we have:
W = work done by the force
T = time taken
So the power produced is
Later, the force does six times more work, so the work done now is
And this work is done in half the time, so the new time is
Substituting into the equation of the power, we find the new power produced:
So, 12 times more power.
