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3 years ago

Which of the following is the best reason that scientific models are used? (1 point)

Physics

2 answers:

marshall27 [118]3 years ago

7 0

B they help visualize things that are very complex, very large, or very small.

sdas [7]3 years ago

3 0

Answer:

hi there!

Explanation:

B They help visualize things that are very complex, very

large, or very small.

Possible answers include three-dimensional representations of microscopic objects, computer simulations of weather patterns, small-scale representations of rockets and airplanes, and graphs derived from collecting scientific data. Scientific models are used to gain a better understanding of systems and processes.

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Some plants disperse their seeds when the fruit splits and contracts, propelling the seeds through the air. The trajectory of th

Strike441 [17]

Answer:

Biomedical engineering

Explanation:

this is because plant sees are important

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2 years ago

Velocity and acceleration are both vectors; they have a direction. What is thedirection of the velocity and acceleration vectors

just olya [345]

Answer:

d. Both A & C

Explanation:

- The velocity of the ball is a vector, whose magnitude indicates its rate of change of position, and it has a direction. In this case, the ball is moving upward, therefore the direction of motion is upward, so the direction of the velocity is upward as well.

- The acceleration of the ball is a vector, whose magnitude indicates the rate of change of the velocity. The direction of the acceleration is:

-- positive if the the magnitude of the velocity is increasing

-- negative if the magnitude of the velocity is decreasing

For a ball thrown upward, the acceleration is given by the acceleration of gravity, $g=9.8 m/s^2$ . This acceleration points downward, and it is constant during the entire motion. In particular, it does not change direction, as it is always directed downward. Therefore, the acceleration of the ball is downward.

So, the correct answer is

d.Both A & C

Since A and C are both true:

a.The velocity vector is directed upward.

c.The acceleration is directed downward.

3 0

3 years ago

The Law of Conservation of Mass states that mass can be destroyed during a chemical change.

Vesna [10]

The law of conservation of mass states that mass can be destroyed during a chemical change is TRUE

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2 years ago

As demonstrated by the Doppler Effect, why does sound increase in pitch as a sound source approaches you?

scZoUnD [109]

I think so it ans wold be d.because if the source approaches the observer more and more wavefront will pass and it get squeezed.so wavelength decreases and frequency increases.

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2 years ago

Read 2 more answers

On both the spring and fall equinoxes, the sun's rays are vertically overhead at the _______

Anni [7]

It is overhead at the equator, it is because the sun ray’s will be moving vertically as this will be directed at the equator. It is because if it moves vertically, it will hit or overhead the equator and this usually happens in spring and fall.

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2 years ago