During the pyramid-building era the ancient Egyptians used two units of length, the palm
and the ell. An ell was 7 palms and a palm
was about 3 inches.
If a hawk is tracked at a diving speed of 3
ells per second, what is its speed in inches per
second?
1. 126 in/s
2. None of these
3. 63 in/s
4. 0.7 in/s
5. 98.6in/s
6. 21 in/s
7. 5.25 in/s
8. 1/3 in/s
9. 7in/s
10. 42 in/s

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

you didnt put any of the following