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mixer [17]
3 years ago
13

what will occur when the north pole of one bar magnet is moved near the north pole of another bar magnet?

Biology
1 answer:
KATRIN_1 [288]3 years ago
5 0
The ends will repel each other
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Consider the motion diagram. It illustrates a car's velocity (V) and acceleration (A). Determine is there is a change in either
aleksandrvk [35]

Answer:

Change in velocity: yes

Change in acceleration: no

Explanation:

The diagram of the problem is missing: find it in attachment.

In the diagram, there are represented:

- The velocity of the car, as a vector labelled with V

- The acceleration of the car, as a vector labelled with A

The directions of the vector represent the direction of the velocity and the acceleration, while the length of the arrows represent the magnitude of the two quantities.

We observe that:

- For the velocity, the direction is always to the right; however, the length of the arrow decreases, so the magnitude of the velocity keeps decreasing

- For the acceleration, the direction is always to the left; and the length of the arrow remains constant, therefore the magnitude of the acceleration does not change.

This means that the car is moving to the right, but it is slowing  down, since the direction of the acceleration is opposite to the direction of the velocity.

5 0
3 years ago
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What may have helped horses change over the last 40 million years? A) an increase in their height and weight B) the coming and g
melisa1 [442]

A change in their food, from trees to grass in the Great Plains.

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3 years ago
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What is not a feature of rbc morphology?
kotegsom [21]

The given question is incomplete as options are not provided, however the options are as follows:

A. a large surface area-to-volume ratio

B. ability to form stacks known as rouleaux

C. a convex shape allowing for more efficient transport of oxygen

D. ability to bend and flex when entering capillaries

Answer:

The correct answer is - option C.

Explanation:

RBC cells are biconcave in the shape it is form shape of dub bell in general. These cells are small, round. The biconcave shape of the blood cells helps in the flow of the blood easily and these cells have no nucleus like other cells to have high amount of hemoglobin that is a pigment that carry oxygen and other gases for easy gaseous exchange.

Due to their flexible biconcave shape they can bend and flex accordingly during entering capillaries. The shape of the RBC helps in making stacks and large surface to area ratio.

Thus, the correct answer is - option C.

8 0
3 years ago
How do mass extinctions affect the rate of evolutionary change?
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The role of mass extinction in evolution. At the most basic level, mass extinctions reduce diversity by killing off specific lineages, and with them, any descendant species they might have given rise to. ... But mass extinction can also play a creative role in evolution, stimulating the growth of other branches.

6 0
3 years ago
What is the expected colorimetric result from the negative control in your assay?
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<span>3,3',5,5'-Tetramethylbenzidine or TMB is a chromogenic substrate visualising reagent used in enzyme-linked immunosorbent assays (ELISA), it yields a blue color when oxidized, typically as a result of oxygen radicals produced by the hydrolysis of hydrogen peroxide by HRP, (thermofisher). The expected colorimetric result from the negative control in your assay will be no development of blue color</span>
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