Which statement is true according to newton's second law of motion?
o a.
an object accelerates in the direction opposite to the direction of the force applied.
ob. an object accelerates in the direction perpendicular to the direction of the force applied.
oc. an object accelerates in the same direction as that of the force applied.
d.
o e.
an object undergoes no acceleration on the application of force.
an object's acceleration is independent to the force applied.

Drug abuse will not lead to physical and psychological dependence. true or false ?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?