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aksik [14]
4 years ago
11

An observer notes that the pitch of a sound is becoming progressively higher. The observer can conclude that the sound is moving

Chemistry
2 answers:
kherson [118]4 years ago
8 0

Answer:

Closer and the frequency of the sound is increasing.

Explanation:

This is known as the doppler effect, and is commonly associated with emergency vehicles which move at high speeds with sirens on. While they're not audible from very far away, when they approach the pitch and frequency increase, fading away in opposite fashion as the source moves away.

abruzzese [7]4 years ago
8 0

Answer:

its the last one D

Explanation:

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A gallon of paint covers 350 square feet.
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Answer:

2,137... gallons

Explanation:

(160+140+14x16x2)/350=2,137...

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When something heats up, new energy is created, and when something cools down, energy is destroyed. agree disagree
olga nikolaevna [1]
Disagree because in the law of conservation of mass, it states energy cannot be created or destroyed
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JulsSmile [24]

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6 0
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In one sentence, describe the general chemical structure of carbohydrates. In a second sentence, list the major biochemical func
Brums [2.3K]

Answer:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is CH_2OH.

Biochemical functions of carbohydrates: Carbohydrates provide Stored Energy, Carbohydrates help to preserve Muscle and promote digestive health and Carbohydrates build macromolecules

Explanation:

A carbohydrate is a compound composed of molecules of carbon (C), hydrogen (H), and oxygen (O) such that its general chemical formula is CH_2OH.

Biochemical functions of carbohydrates:

1. Carbohydrates provide Stored Energy.

2. Carbohydrates help to preserve Muscle and promote digestive health.

3. Carbohydrates build macromolecules

6 0
3 years ago
Which statement is true about intermolecular forces?
seropon [69]

Answer:

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

Importance:

Intermolecular forces are important because they determine the physical properties of substances. Many of the life-sustaining properties of water such as its high heat capacity are a result of the hydrogen bonding capabilities it has and are thus due to intermolecular forces.

4 0
3 years ago
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