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Paha777 [63]
2 years ago
5

How many times more acidic is solution A with a pH of 3.4 than solution B with a pH of 8.4?

Physics
1 answer:
jeka942 years ago
8 0

Answer:

Solution A is 1 x 10⁵ times more acidic than solution B

Explanation:

The pH scale is a logarithmic scale used to express the acidity or basicity of a solution.

The values are written from 1 - 14 with 1 being the most acidic and 14 a basic solution.

Each interval is ten folds more concentrated than the next because it is a logarithmic scale.

 Since the pH of A = 3.4

                  pH of B  = 8.4

 The difference  = 8.4  - 3.4  = 5.0

So, Solution A is 1 x 10⁵ times more acidic than solution B

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Erica throws a tennis ball against a wall, and it bounces back. Which force is responsible for sending the ball back to Erica?
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OPTIONS :

A.) the force that the ball exerts on the wall

B.) the frictional force between the wall and the ball

C.) the acceleration of the ball as it approaches the wall

D.) the normal force that the wall exerts on the ball

Answer: D.) the normal force that the wall exerts on the ball

Explanation: The normal force acting on an object can be explained as a force experienced by an object when it comes in contact with a flat surface. The normal force acts perpendicular to the surface of contact.

In the scenario described above, Erica's tennis ball experiences an opposite reaction after hitting the wall.This is in relation to Newton's 3rd law of motion, which states that, For every action, there is an equal and opposite reaction.

The reaction force in this case is the normal force exerted on the ball by the wall perpendicular to the surface of contact.

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3 years ago
Two identical space probes are orbiting Jupiter. Scientists determine that one of the space probes has a larger gravitational fo
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If the probes are identical, then the one that feels a larger gravitational
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If they're not identical, then the one with greater mass will feel more
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6 0
3 years ago
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The answer for the above statement is:

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Explanation:

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Ilya [14]
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The same force is applied to two skateboards. One rolls across the room and the other moves a few feet and comes to a stop. Wher
igor_vitrenko [27]

The longer you spend reading and thinking about this question,
the more defective it appears.

-- In each case, the amount of work done is determined by the strength
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<em><u>applying the force</u>.   </em>Without some more or different information, the total
distance the skateboard rolls may or may not tell how much work was done
to it.<em>
</em>
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I don't think we know enough about the experimental set-up and methods
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