Answer:A
Explanation:
The image is formed behind the mirror.
Answer:
Since the maximum thermal efficiency is higher than 55 percent, there can be a power cycle with these reservoir temperature with an efficiency higher than 55 percent.
Explanation:
The maximum thermal efficiency is determined from the given temperature
nth Carnot = 1- TL/TH
Where TL= 17+273= 290k
TH= 627*273= 900K.
nth Carnot = 1- 290/900 = 0.68
0.68*100 = 68 percent
Answer:
The work done on the block by the spring as it accelerates the block is 4kx².
Explanation:
Let initial distance is x.
It was compressed three times farther and then the block is released, new distance is 3x.
The work done in compressing the spring is given by :


So, the work done on the block by the spring as it accelerates the block is 4kx².
I am a girl and i have a virgina and im 13 tho so dont touch me lolz mark brainly
It transfers the electrical current from the point of contact on the lightning rod into the ground.