Hey there!
<span>because it slows down, which causes it to bend is the reason why light refracts when it encounters the glass in the lens
Hope this helps!</span>
Answer:
100 W
Explanation:
The power can be defined as energy change / time taken
Or
Energy used/time taken
So in this case you get,
Power = 2500/25 = 100 W
Alkali
The alkali metals are six chemical elements in Group 1, the leftmost column in the periodic table. They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Hope this is the brainliest answer.
Answer:
They appear to recede from our viewpoint.
That is, their emitted spectra are shifted toward the red (red-shift).
The wave-lengths that are received on earth are somewhat longer because of the "Doppler" shift of the receding atoms.