Answer:
its b
Explanation:
ohm is the unit of resistance
Complete Question
The complete question is is shown on the first uploaded
Answer:
The elastic potential energy at point B is
The kinetic energy at point D is
Explanation:
Looking at the given point we can observe that mechanically energy(i.e potential and kinetic energy ) is conserved and it value is
So at point B
KE at point B is 50J
So
Now at point D
at point D is 25J
So
The resistance is 4 times the resistance of the first wire. the formula is R = p*l/A with p being resistivity, l length and A area. So if you double length and half area, which botv result in more resistance, you get p*2/0.5 or 4 (p can be abandoned because it is the same. We take standard length and area as 1)
<span>Upper surface of groundwater below which soil is saturated with water that fills all voids and interstices, and where the pressure of water in the soil equals the atmospheric pressure. Thats all i can say. </span>
We know that the formula to of acceleration is given by,
Re-arrange to the Velocity,
(1)
We know as well for second Newton's law is,
We can re-arrange for the acceleration, so
(2)
Replacing (2) to (1),
Our values are,
Substituting the values,
We have two components of a net velocity, so we can calculate the direct force through,