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Romashka-Z-Leto [24]
3 years ago
11

The image shows Mary happily swinging in the park. There are

Chemistry
1 answer:
Alexeev081 [22]3 years ago
4 0

Answer:

Kinetic energy is highest at point B and Lowest at point A

Explanation:

The kinetic energy is directly proportional to the square of velocity. Therefore, the kinetic energy will be maximum at the point where the velocity is maximum. An it will be lowest at the position where the speed is the lowest. The speed is maximum at point B, because its the mean position. Hence, K.E will be max at B. Also speed is lowest at the highest point so, Kinetic Energy will be lowest at point A.

Another method can be used as follows:

Since, there are two energies present here, namely kinetic energy and potential energy that are interchanging with each other. From law of conservation of energy the sum of kinetic energy and potential energy must be equal at each point. Potential energy is directly proportional to height of object. So, the potential energy will be maximum at point A due to maximum height and consequently Kinetic energy will be minimum at point A. Similarly, the potential energy will be minimum at point B due to minimum height and consequently Kinetic energy will be maximum at point B. Therefore,

<u>Kinetic energy is highest at point B and Lowest at point A</u>

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melamori03 [73]

Answer:

15.75g

Explanation:

Rearrange the formula: density = mass/volume, so that mass is the subject: mass = density × volume

Now substitute (plug in) the known values into the formula:

mass = 10.5 × 1.5 ⇒ mass = 15.75g

The mass of the silver necklace is 15.75g

Hope this helps!

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cluponka [151]

Answer:

Metal

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We end up at Calcium.

Calcium is a metal and we're also on the alkaline earth metals column.

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From the graph of Density vs. Concentration, created in Graph 1, what was the relationship between the concentration of the suga
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The graph is not given in the question, so, the required graph is attached below:

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