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mars1129 [50]
3 years ago
9

Suppose that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the bloc

k for a little exercise.
A) If John walks once around the block, what distance does he travel?

B) If John walks once around the block, what is his final displacement?
Physics
1 answer:
Aleks [24]3 years ago
5 0

Answer:

It's A

Explanation:

Although I'm not sure about the second one, I'm sure the first one is A

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A lever has a total length of 12 meters with a fulcrum at the exact center of the lever. Which best describes how to
valentina_108 [34]

Answer:

The correct option is the last option.

Explanation:

Generally, when trying to create a mechanical advantage of a lever for an apparatus or a machine, <u>the load is usually moved closer to the fulcrum</u>. Hence, if a lever has a total length of 12 meters and the fulcrum is placed at 6 meters (the center), the best way (based on the previous statement) to double the mechanical advantage of the lever is <u>to move the fulcrum 4 meters toward the side on which the force is applied</u>. The correct option is the last option.

3 0
3 years ago
A sample of a monatomic ideal gas initially at temperature T, undergoes a process during which the pressure of the gas triples a
Allisa [31]

Answer:

B) 8 T.

Explanation:

For an ideal gas , the gas law that it follow is as follows

P₁V₁ / T₁ = P₂ V₂ /T₂

This law is followed by all the gases whether mono atomic or diatomic.

In this case following information are given

P₂ / P₁ = 3

V₂ / V₁ = 3

T₁ = T

T₂ = ?

From the gas law formula given , we have

T_2 =\frac{P_2\times V_2\times T_1}{P_1\times V_1}

V_2 = \frac{P_2}{P_1} \times\frac{V_2}{V_1}\times T

= 3 X 3 T

= 9 T

Change in temperature = 9T - T = 8 T.

7 0
3 years ago
In prokaryotic and eukaryotic cells the amount of water in the cell is kept at a steady state. The organelles
Len [333]

Answer:

A

Explanation:

It would not be C because prokaryotic cells don't have a nucleus. And if you're looking for a body in the cell that controls the nutrients and water it would be A.

3 0
3 years ago
How many stars are in our solar system?
Annette [7]

Answer:

there are over 100 billion stars in our galaxy.

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How does mass affect the change in velocity of an object? Immersive Reader
Bas_tet [7]

Answer:

I would say the 3rd one

Explanation:

5 0
3 years ago
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