- What was the hardest chemistry regents?

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In the first law of thermodynamics, the work can be a. only positive b. either positive or negative c. only negative d. neither? Si A es un punto representades por un arbol y B la persona que esta caminando cual es el punto de referencia? Find the angle of elevation of the line (to the nearest degree) y=1/2x+3? Determine the apparent weight of a 500 N person under water, if he has a volume of 50 L? The density of water is 1,000 kg/m3? A fluid is moving at a speed 25 cm/s through some tube with a cross-sectional area of 0.05 m2. Determine the fluid's flow rate.?