Geology is the study of the Earth, the materials of which it is made, the structure of those materials, and the processes acting upon them.
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.
I think the correct answer from the choices listed above is option B. The very high voltage needed to create a spark across the spark plug is produced at the transformer's secondary winding. <span>The secondary coil is engulfed by a powerful and changing magnetic field. This field induces a current in the coils -- a very high-voltage current.</span>
Answer:
a) 5 N b) 225 N c) 5 N
Explanation:
a) Per Coulomb's Law the repulsive force between 2 equal sign charges, is directly proportional to the product of the charges, and inversely proportional to the square of the distance between them, acting along the line that joins the charges, as follows:
F₁₂ = K Q₁ Q₂ / r₁₂²
So, if we make Q1 = Q1/5, the net effect will be to reduce the force in the same factor, i.e. F₁₂ = 25 N / 5 = 5 N
b) If we reduce the distance, from r, to r/3, as the factor is squared, the net effect will be to increase the force in a factor equal to 3² = 9.
So, we will have F₁₂ = 9. 25 N = 225 N
c) If we make Q2 = 5Q2, the force would be increased 5 times, but if at the same , we increase the distance 5 times, as the factor is squared, the net factor will be 5/25 = 1/5, so we will have:
F₁₂ = 25 N .1/5 = 5 N
Answer:
<em>The </em><em>heat </em><em>capacity</em><em> </em><em>of </em><em>a </em><em>body </em><em>is </em><em>defined</em><em> </em><em>as </em><em>the </em><em>heat </em><em>required</em><em> </em><em>to </em><em>raise </em><em>it's </em><em>temperature</em><em> </em><em>by </em><em>me </em><em>degree </em><em>or </em><em>one </em><em>kelvin.</em><em>w</em><em>h</em><em>i</em><em>l</em><em>e</em><em> </em><em>specific</em><em> </em><em>heat </em><em>capacity </em><em>of </em><em>a </em><em>substance</em><em> </em><em>is </em><em>defined</em><em> </em><em>as </em><em>the </em><em>heat </em><em>required</em><em> to</em><em> </em><em>the </em><em>temperature</em><em> </em><em>of </em><em>a </em><em>unit </em><em>mass </em><em>of </em><em>it </em><em>through </em><em>one </em><em>degree </em><em>or </em><em>one </em><em>kelvin</em><em>.</em>
<em>I </em><em>hope </em><em>it </em><em>helps</em>