The minimum stream velocity necessary to transport a sediment particle that is 0.1 centimeter in diameter is closest to

5.0 cm/s

Explanation:

Q = V * A

given that the diameter of the particle = 0.1 cm

V = stream velocity , A = cross sectional area of stream , Q = stream flow

For a particle with a diameter of 0.1 cm,

To determine the stream velocity we will use a stadia rod to measure at least 5 meters down ( depth of stream ) three times and then take the average value which will be used to determine the cross sectional area of the stream but   Given that the width of the stream is not given the closet value to the stream velocity will be = 5.0 cm/s

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.

there are two significant figures.