How much time did it take Ralph to do 2000 J of work using 16 W of power?

A- 125 seconds
B- 32000 seconds
C- 1250 seconds
D- 320 seconds

How many atoms are there in 5.70 mol of mg

Stage in which a typical star has completely stopped fusion

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.