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how much force is needed to accelerate a 80 kg rider and her 250 kg motorcycle at 4 m/s2?
a. 320 n
b. 1000 n
c. 1030 n
d. 1320 n

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

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?

What if it is did darwin used to support his theory of evolution