Please

Biology

1 answer:

Artist 52 [7]2 years ago

7 0

Sara should replace the first old washing machine with a new one which has an efficiency of 10 gallons per load.

<h3>What is the meaning of eco-friendly?</h3>

An old washing machine uses = 35 gallons of water per load.

A new washing machine uses = 10 gallons of water per load.

Hence, the difference between the number of gallons used by the an old washing machine and a new washing machine's efficiency of using water is 15 gallons which will save more water.

Hence, sara should replace the first old washing machine with a new one which has an efficiency of 10 gallons per load.

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How is erythrocytes an advantage in exchanging and carrying

elena-s [515]

Answer:

Shape of Red Blood Cells Erythrocytes are biconcave discs with very shallow centers. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.

6 0

3 years ago

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.