Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?-Brody is correct because the wave involves an input of energy.
-Ethel is correct because energy is not carried from one place to another.
-Brody is correct because the pattern repeats.
-Ethel is correct because the motion has no pattern.

Also...

Khalad is measuring the amplitude of a wave. What can be known about this wave?
-It is a sound wave.
-It is a transverse wave.
-It is an electromagnetic wave.
-It is a mechanical wave.

Answers

Answer 1

Answer:

The correct answer is:

B. Ethel is correct because energy is not carried from one place to another.

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Ethel is correct because energy is not carried from one place to another.

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Answer 2

Answer: The correct answer for the question that is being presented above is this one: "-Ethel is correct because energy is not carried from one place to another; -It is an electromagnetic wave." Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not.

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Below are four statements about acceleration. Which statement is not correct? A Acceleration always involves changing speed. B Changing direction always involves acceleration. C Changing speed always involves acceleration. D Circular motion always involves acceleration.

A 4.0-kilogram ball moving at 8.0 m/s to the right collides with a 1.0-kilogram ball at rest. After the collision, the 4.0-kilogram ball moves at 4.8 m/s to the right. What is the velocity of the 1-kilogram ball?

Answers

Use conservation of momentum. Check to see if your answer makes sense. A heavy ball moving right hits a stationary ball. Afterwards they should both be moving right and the lighter ball should be moving faster.

a very large tank, closed from above and not open to the atmosphere, is partially filled with water. the pressure at the top surface of the water is kept at three times atmospheric pressure by constantly injecting pressurized air from above. water emerges from the tank through a circular nozzle that is located close to the base of the tank and is open to the atmosphere. at the instant when the water stands high above the nozzle, what is the water flow rate from the nozzle? the cross-sectional area of the nozzle is . g

Answers

Answer:

the water flow rate is higher than the atmospheric pressure

What does it mean for an atom to be electronegative? How does this affect the shape and overall charge of a water molecule?

Answers

Answer:

Electro-negativity is the tendency of an atom to attract the shared pair of electron in a covalent bonding while forming a molecule.

Explanation:

In a covalent bonding the atoms share the electrons mutually without actually transferring it to one of the atom to gain a stable configuration. In such a case when one atom is more electro-negative than the other then the shared pair of electron gets slightly shifted towards the more electro-negative developing a denser cloud of electrons near the nucleus of that atom which we denote as partial negative ( $-\delta$ ) in the superscript.

In water molecules we have a similar case where the oxygen atom is more eletro-negative (value=3.44) than the hydrogen atom (value=2.2). This leads to a higher electron density near the oxygen atom. A part from the shared pairs, the oxygen atom also possesses 2 lone pairs of electrons which tend tp makethe shape a tetrahedron in a 3D structure. This results in molecular shape being bent with an H-O-H angle of 104.5°.

How does a stars life begin?

Answers

A stars life begins as a nebula (which would mostly be hydrogen) and starts to concentrate and compact with dust which then by gravity turns into a star.

Which of the following is NOT a stage of cellular respiration?a. fermentation
b. electron transport
c. glycolysis
d. Krebs cycle

Answers

Fermentation is the stage where it is not part of the cellular respiration. The answer is letter A. fermentation does not require oxygen to do respiration, rather, these are the glycolysis, Kreb’s cycle and electron transport.

Fermentation is NOT a stage of cellular respiration. Therefore option A is correct.

Fermentation is not a stage of cellular respiration. Cellular respiration is the process by which cells break down glucose and other organic molecules to produce energy in the form of ATP (adenosine triphosphate).

It occurs in three main stages: glycolysis, the Krebs cycle (also known as the citric acid cycle or the tricarboxylic acid cycle), and the electron transport chain.

Fermentation is an alternative metabolic pathway that occurs in the absence of oxygen (anaerobic conditions). It is a partial breakdown of glucose or other organic molecules that do not involve the complete oxidation of glucose to produce ATP.

Instead, it produces a small amount of ATP and end products such as lactic acid or ethanol.

Therefore option A is correct.

Know more about Fermentation:

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A car travels 1000 meters in 5 seconds. What is its average velocity?

Answers

Answer:

the velocity is 200

Explanation:

the average velocity is 200

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