Answer:
energy
Explanation:
waves can move distances without transferring any matter, so the answer is energy
The currents (Amperes)
in the two cases are calculated as power/voltage: <span>
510000W / 12000V = 42.5 A
510000W / 47000V = 10.85 A
<span>And that the power wasted in the two cases is calculated as current^2
x resistance:
(42.5 A)^2 (2.5 Ohms) = 4,515.625 W
(10.85 A)^2 (2.5 Ohms) = 294.30625 W
<span>So the amount of power saved is the difference:
<span>4,515.625 - 294.30625 = 4221.32 Watts</span></span></span></span>
<span>This is the main reason
why distribution grids aim to operate at the highest voltages possible.</span>
Answer:
Not be changed
Option: D
<u>Explanation:</u>
The physical quantity which has both ‘magnitude and direction’ is called vector. These vectors are represented by a line and an arrow, <em>the line represent the magnitude and arrow represent the direction of the physical quantity</em>. The vectors are added and subtracted according to the direction of the vectors.
According to the vector law addition while adding vectors direction and length of the vector is not be changed.<em> If the length of the vector changed the magnitude is also changed while so, while adding vectors length must not be changed.
</em>
W = F x d
F: 450 N
d = 10 m
plug your variables into the equation to get W = 450N x 10m
Answer:
Solar conjunction is the period when Earth and Mars, in their eternal march around the Sun, are obscured from each other by the fiery orb of the Sun itself. Like dancers on either side of a huge bonfire, the two planets are temporarily invisible to each other