Nuclear reactions, such as fusion and fission, convert
A. large amounts of matter into negligible amounts of energy.

B. large amounts of energy into very small particles of matter.

C. very small amounts of energy into significant particles of matter.

D. very small amounts of matter into significant amounts of energy.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.

When using the scientist method, which step comes last?