Explain the cause of the daily tides and give two examples of human activities affected by tides.

Answers

Answer 1

Answer: Tides are caused by the specific alignment of the Moon, Earth, and Sun.
When aligned a certain way the the gravitational pulls basically share and add on to each other creating tidal waves.

An example of a certain alignment would be spring tides, which happen during a New or Full moon.

Examples: Boat sailors must watch out for tides and make sure to plan their sailing journeys according to the tide. They don't want to be caught against a tide, especially small board sailors.

Also fisherman keep note of tides since some sea life rely on tides for survival and feeding or some fish simply follow the movement of the tides. Fisherman use tides as an indication of when it'd be best to go fishing.

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A snake slithers up a giant sand dune at 2 meters per second.How far will it have moved in a minute?

Answers

it will have traveled 120 metets

Answer:

A. 120m

Explanation:

just took the test

A motorist travels a distance of 406km. during a 7 hour period. what was the average speed?

Answers

Answer:

Average speed of the motorist is 58 km/hour.

Explanation:

Total distance covered by motorist = D = 406 km

Total time taken motorist = T = 7 Hours

The formula of an average speed is given by:

$S_(avg)=\frac{\text{Total distance covered}}{\text{Total time taken}}=(D)/(T)$

Average speed of the motorist is:

$S_(avg)=(406 km)/(7 hours)=58 km/hour$

If we are to say that the average speed per hour, then the answer is 58kph, in calculation to get the average, you just divide the total distance over the period of time. in equation, 406km/7hr the answer is 58 kilometers per hour.

How does bias in the data affect experimental results?A. Bias makes the data harder to analyze.
B. Bias makes the results less reliable.
C. Bias makes the results easier to interpret.
D. Bias makes the results not publishable.

Answers

Answer:

Explanation:

Bias may make one side look worse than they actually are.

If you have bias data result, then you can’t trust on your outcome to be 100% accurate. So, your answer is B.

Hope this helps :)

Which of these formulas contains the most polar bond?
(1) H–Br (3) H–F(2) H–Cl (4) H–I

Answers

The answer is H—F. Fluorine is the most electronegative of the four halogens (and, in fact, of all the elements), so it does the best job of gathering the shared electrons to itself. Therefore, the bond with F is the most polar

During the reproduction of a species of butterflies, a mutation occurs that makes the offspring more visible to predators. Is this a positive or negative mutation? How do you predict this mutation will affect the long term survival of the species? Justify your response in two or more complete sentences.

Answers

This is an example of negative mutation. Negative mutations produce a phenotype that acts antagonistically to the wild-type phenotype. On the other hand positive mutation produce a phenotype that acts synergistically to the wild-type phenotype.

The negative mutation will negatively affect the long term survival of the butterfly species as the mutation makes the new butterfly offsprings more visible to predators.

What is the Roman numeral that should be used in the following: silver (_______) sulfide? A. No Roman numeral should be used here. B. I C. III D. II

Answers

Answer: The correct answer is Option B.

Explanation: The compound given to us is $Ag_2S$ . To write the IUPAC name for this compound, we need to follow some rules:

1. First write the name of the cation with its oxidation state in roman numbers.

2. Then write the name of the anion which may be a polyatomic ion or a non-metal.

3. The anion is used with a suffix '-ide'. Example: For chlorine, the anion would be named as chloride, for sulfur, the anion would be sulfide.

For the given compound, 2 silver atoms are needed to neutralize the charge on 1 sulfur atom.

Hence, the oxidation number of silver atom is '1'. So, the IUPAC name for the compound will be silver (I) sulfide.

Therefore, the correct option is B.

The answer is I

The correct way of writing this would be silver(I) sulfide, but silver sulfide without the (I) is also OK because it isn't always writte, nor is it necessary to write the (I).

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Can someone how to do these problems!!