Which term describes the amount of thrust created per unit of mass of an engine and fuel?
A. Specific impulse
B. Engine specs
C. Thrust
D. Trajectory

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Label a-f based on the table using c for concentrated and d for dilute

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.