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Katyanochek1 [597]
3 years ago
10

An object moves in the eastward direction at constant speed. A net force directed northward acts on the object for 5.0 s. At the

end of the 5.0-second period, the net force drops to zero newtons. Which one of the following statements is necessarily true?A. The direction of the object's acceleration depends on how fast the object was initially moving.B. The magnitude of the object's acceleration depends on how fast the object was initially moving.C. The object will be moving eastward when the force drops to zero newtons.D. The final velocity of the object will be directed north of east.E. The change in the velocity of the object will be directed north of west.
Physics
2 answers:
Pie3 years ago
8 0

Answer: D

The final velocity of the object will be directed north of east

Explanation:

lana [24]3 years ago
5 0

Answer:

d

Explanation:

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Explanation:

First we will convert the given mass from lb to kg as follows.

        157 lb = 157 lb \times \frac{1 kg}{2.2046 lb}

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Now, mass of caffeine required for a person of that mass at the LD50 is as follows.

         180 \frac{mg}{kg} \times 71.215 kg

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Convert the % of (w/w) into % (w/v) as follows.

      0.65% (w/w) = \frac{0.65 g}{100 g}

                           = \frac{0.65 g}{(\frac{100 g}{1.0 g/ml})}

                           = \frac{0.65 g}{100 ml}

Therefore, calculate the volume which contains the amount of caffeine as follows.

   12818.7 mg = 12.8187 g = \frac{12.8187 g}{\frac{0.65 g}{100 ml}}

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