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wel
3 years ago
8

40 Points!!! Write a summary paragraph discussing this experiment and the results. Use the following questions to help guide the

content of your paragraph.
What was your hypothesis? According to your data, was your hypothesis was correct?
Why did some substances require larger additions before a color change was seen? What does this indicate about the strength of the acid or base?
What happened in the final step of the experiment? What does the final color indicate?
To what extent was this experiment useful in determining pH? Could a specific pH be determined using this procedure?
Why are acid and base indicators important? How could they be used in everyday life?
Physics
2 answers:
Gnoma [55]3 years ago
7 1

Answer:

sorry but i dont know can you brainliest me plsss i need it

Veseljchak [2.6K]3 years ago
5 1

Answer:

ahh停止してくださいahh停止してください

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A string is attached to a ball that has a mass of 0.11 kg. A student pulls up on the string so that the ball accelerates upward
enot [183]

Answer:

T=+1.133N

Explanation:

Tension and weight are forces that have opposite directions

Weight is negative (downward)

W=m*g= 0.11kg*(-9.8m/s^2)

W= -1.078N

Tension is possitive (upward)

The total force will be the sum of both (the difference taking in consideration the direction)

Ft= T+W

Also the total force is the product of the mass due to acceleration:

Ft=m*a

Ft= +0.11kg*0.5m/s^2

Ft=+0.055N (upward)

Tension will be the difference between Ft and W:

T= Ft-W

T=+0.055N-(-1.078N)

T=+1.133N

7 0
3 years ago
Figure 15-1 shows how a(n) ____________________ breeze works.
Firlakuza [10]
<h2>Right answer: Sea breeze </h2>

The sea breeze is formed because during the day the surface of the land on the coast tends to warm up before and more than the surface of the sea. This difference in temperature between these two air masses means that on a sunny day the land warms up much more than the ocean causing a small area of ​​low pressure.

Then, the air rises as the land warms it and the colder air located on the surface of the sea forms a high pressure zone that makes this air mass tend to occupy the space left by the warmer air that has ascended on the coast. Therefore, the mass of air of a high pressure on the ocean always tends to move towards the zone of low pressure located on the coast.

It is important to note that the <u>sea breeze blows perpendicularly to the coast</u> and that the best breezes are formed in the spring and summer seasons because during the spring the water temperature is still cold and during the summer the sun produces high temperatures over the land in the coast.


<h2>So, <u>the greater the temperature contrast </u>between the land and the sea, <u>the greater the force of the wind generated</u>.</h2>
8 0
4 years ago
If a car has an initial velocity of 20 m/s and accelerates at 2.0 m/s² for 100 m, what is its final velocity?
WINSTONCH [101]

Answer:

28.28 ms-1

Explanation:

v² = u² + 2as

v² = 20² + 2× 2×100

v² = 800

v = 28.28 ms-1

8 0
3 years ago
Describe how reactivity changes as you go down Group 1A.
kenny6666 [7]

Answer:

it is a the answer is a btw

Explanation:

3 0
3 years ago
With what force will a car hit a tree if the car has a mass of 3,000 kg and it is accelerating at a rate of 2m/s2
Arisa [49]
<span>F=ma = 3000x2m/sec^2 =6000 newtons. </span>
6 0
4 years ago
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