It doesn't turn it into a battery (storatge of energy) or a generator (maker of energy)
it is making it into a type of energy
mechanical or electromagnetic energy
if you look at how a motor works, the electric current passes throught the wire and alternates csueing the motor to spin so I would say electormagnetic
Hole up your right hand like you're holding a glass of water and point with your thumb in the direction the current is travelling through the wire the rest of your fingers indicate the magnetic field lines direction
Heat capacity of a solid is the amount of heat energy required to raise the temperature of a unit mass of that solid through one degree centigrade.
Answer: The red ball has a greater velocity than the purple ball
Explanation:
Given the chart :
Ball : Green - - - Red - - - Yellow - - - Purple
Mass : 0.5 - - - - - - 1.2 - - - - - 0.9 - - - - - - 1.7
The four balls have the same momentum
Momentum = mass × velocity
Since momentum is directly proportional to the product of Mass and velocity, and the balls have the same momentum. Therefore the lower the mass of the ball, the higher or greater it's Velocity.
Because if the balls with lower masses have lower Velocities than balls with higher masses, both balls cannot have the same momentum.
Therefore, the only viable option above is, The red ball has a greater velocity than the purple ball, because the red ball has a lower mass than the purple ball
Answer: C.
Explanation:
For a parallel-plate capacitor where the distance between the plates is d.
The capacitance is:
C = e*A/d
You can see that the distance is in the denominator, then if we double the distance, the capacitance halves.
Now, the stored energy can be written as:
E = (1/2)*Q^2/C
Now you can see that in this case, the capacitance is in the denominator, then we can rewrite this as:
E = (1/2)*Q^2*d/(e*A)
e is a constant, A is the area of the plates, that is also constant, and Q is the charge, that can not change because the capacitor is disconnected.
Then we can define:
K = (1/2)*Q^2/(e*A)
And now we can write the energy as:
E = K*d
Then the energy is proportional to the distance between the plates, this means that if we double the distance, we also double the energy.
, while Mars radius is 
, so the escape speed of the spacecraft at Mars surface is
while its radius is 
, so the escape speed at its surface is