Which of the questions would involve the investigation of kinetic energy?A. What material makes the strongest boat?

B. How does the color of a boat affect heat absorption?

C. Do boats float higher in salt or fresh water?

D. What is the effect of a boat’s shape on its speed?

Answers

Answer 1

Answer:

Answer:

D. What is the effect of a boat’s shape on its speed?

Explanation:

Kinetic energy can be defined as the energy possessed by an object or body due to its motion. It is the amount of work required to accelerate an object or body with a specific mass from its point of initial rest to a final velocity.

Mathematically, kinetic energy (K.E) is equal to 1/2(mv²).

Hence, the question which would involve the investigation of kinetic energy is "what is the effect of a boat’s shape on its speed?" because speed is directly related to the motion of the boat. Generally, the shape of the hull of a boat has an effect on the speed of the boat.

Answer 2

Answer:

Answer:

What is the effect of a boat’s shape on its speed?

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Scientists can identify an element by looking at the structure of a single A.molecule. B.electron. C.neutron. D.atom.

An atom has 6 electrons in its valence shell. how many unpaired electrons does it have?

Answers

Final answer:

An atom with six electrons in its valence shell will have two unpaired electrons. The four electrons will occupy two orbitals fully, while the remaining two electrons will each occupy one orbital in accordance with Hund's Rule.

Explanation:

An atom with six electrons in its valence shell typically belongs to group 16 on the periodic table. In this group, Oxygen is a perfect example having 'six valence' electrons but only 'two of them are unpaired'. The four electrons are arranging themselves in two fully occupied orbitals, while the remaining two electrons each occupy one orbital, following Hund's Rule, which states that orbitals in the same subshell fill with one electron first, with spins parallel, before they begin to pair up. Therefore, an atom with six electrons in its valence shell would have two unpaired electrons.

Learn more about Unpaired Electrons here:

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#SPJ11

Answer: 2

Explanation:

In order to have a complete shell, you need 8 total electrons.

Which period is older than the Triassic period? Cambrian Cretaceous Jurassic Paleogene.

Answers

The Triassic period is one of the geological periods and is the shortest of the Mesozoic era. Cambrian is the older era than the Triassic period.

What is Cambrian and triassic period?

The Triassic period existed 250 -200 million years ago and started after the vastest and most extreme devastation ever. It is the 1st period of the Mesozoic and is known for the movement of the Dinosaurs on the land, flying pterosaurs and swimming plesiosaurs and ichthyosaurs.

The Cambrian is the period of the Paleozoic era and is the most important period because of the appearance of many animals. In this period, the temperature raised on the planet and the ice sheets melted at a very dangerous rate leading to mass devastation.

Therefore, option A.Cambrian is older than the Triassic period.

Learn more about Cambrian and Triassic periods here:

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Answer:

A: Cambrian!

Explanation:

got it right on ed :)

The romantic movement started as a rejection of what

Answers

changes brought by industrialization

What is the net ionic equation? (This is already balanced, just need the net ionic) 2CH3COOH(aq)+ Sr(OH)2(aq)----> Sr(CH3COO)2(aq)+2H2O(l)

Answers

Net ionic equation should be like this :
CH3COOH(aq) + OH- --> CH3COO- + H2O(l)
According to the fact that acetic acid is too weal and non-ionized, put CH3COOH, Sr(OH)2 is not so strong but can dissolve therefore can ionize.

In the formula X2O5, the symbol X could represent an element in Group(1) 1 (3) 15
(2) 2 (4) 18

Answers

Answer: (3) 15

Explanation: We criss-cross down the oxidation numbers to get the subscripts for the correct formulas. That means the X has an oxidation number of 5. The element with the + oxidation number is always written first so it is +5. Of the groups names, only group 15 has +5 as an oxidation number.

Which of the following statements explains the difference between a lease and a loan?a. At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the
lease company
b. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the car
belongs to you.
c. A loan requires a large down payment at the beginning while a lease does not.
d. A lease requires a large down payment at the beginning while a loan does not.
Please select the best answer from the choices provided