Answer:
Increase in speed.
Explanation: Since mass must be conserved, if the cross section of the flow tube is not the same, that is varies, the flow speed must change to conserve mass.
This means that there is a non-zero net force acting on the fluid that causes the fluid to increase or decrease in speed depending on whether the fluid is flowing through a portion of the tube with a smaller or larger cross
Answer:
which is the most suitable place for growing large amounts of sugar cane
Answer:
Wheel A
Explanation:
Moment of inertia is the tendency of a body to resist angular acceleration.
The moment of inertia of a body having its mass concentrated away from the axis of rotation will have a higher value.
<u>For a ring, we have the moment of inertia as:</u>
where:
m = mass of the ring
r = radius of the ring
<u>Moment of inertia for a disc:</u>
Answer:
On the magnitude of the charges, on their separation and on the sign of the charges
Explanation:
The magnitude of the electric force between two charges is given by
where
k is the Coulomb's constant
q1, q2 are the magnitudes of the two charges
r is the separation between the charges
From the formula, we see that the magnitude of the force depends on the following factors:
- magnitude of the two charges
- separation between the charges
Moreover, the direction of the force depends on the sign of the two charges. In fact:
- if the two charges have same sign, the force is repulsive
- if the two charges have opposite signs, the force is attractive