Answer:
Explanation:
The magnetic dipole moment of a circular coil with a current is given by
where
I is the current in the coil
is the area enclosed by the coil, where
is the radius of the coil
So the magnetic dipole moment can be rewritten as
(1)
Here we can assume that the magnetic dipole moment of Earth is produced by charges flowing in Earth’s molten outer core, so by a current flowing in a circular path of radius
Here we also know that the Earth's magnetic dipole moment is
Therefore, we can re-arrange eq (1) to find the current that the charges produced:
The Answer is B because primary consumers need to get their food from plants.
Answer:
One of the basic principles of chemistry is the electrostatic attraction between atoms or compounds. Electrons are on the outside of an atoms and that's where the charges come from and the interaction between those charges is what happens during a chemical bond. Therefore the answer would be electrons.
A=F/m
a=(3000000)/(20000)
a=15 m/s^2
Answer:
0.074m/s
Explanation:
We need the formula for conservation of momentum in a collision, this equation is given by,
Where,
= mass of ball
= mass of the person
= Velocity of ball before collision
= Velocity of the person before collision
= velocity of ball afer collision
= velocity of the person after collision
We know that after the collision, as the person as the ball have both the same velocity, then,
Re-arrenge to find ,
Our values are,
= 0.425kg
= 12m/s
= 68.5kg
= 0m/s
Substituting,
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<em>The speed of the person would be 0.074m/s after the collision between him/her and the ball</em>
