When a 10-kg block is simultaneously pushed toward the east with 20N and toward the west with 15N, the combination of these forces on the block is 5N toward the East
Let's understand this problem in detail
Let which is in east direction
and which is acting in the west direction
Now,
But and are in opposite direction.
So let's rotate the force vector by 180 degrees which becomes
Now both and are in same directionof the forces are in a single line
Adding both of them, we get
=
= 20N - 15N = 5N, as both of the forces are in east direction hence, the net force is also acting in the east driection
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Answer:
(a) Maximum current through resistor is 1.43 A
(b) Maximum charge capacitor receives is .
Explanation:
(a)
In an RC (resistor-capacitor) DC circuit, when charging, the current at any time, <em>t</em>, is given by
Here, is the maximum current and <em>τ</em> represents time constant which is given by RC (the product of the resistance and capacitance).
The maximum current is given by
<em>V</em> is the emf of the battery and is the effective resistance.
In this question, = 10.0 Ω + 25.0 Ω = 35.0 Ω
(b) The maximum charge is given
<em>Q</em> = <em>CV</em>
where <em>C</em> is the capacitance of the capacitor
Due to the decay of naturally radioactive substances, or even due to the heat made by the movement of the tectonic plates, and formation of gravitational acceleration, the temperature increases.
So the problem ask to calculate the magnitude of the average force applied to the ball if its mass is 0.2kg changes its velocity from 20m/s to 12m/s and the time contact with the ball with the wall is 60 ms. In my calculation the best answer would be 107N.