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2 years ago

A 90 kilogram diver jumped from a cliff. If it takes 2.26 seconds for the diver to hit the water, how high is the cliff?

2 answers:

8 0

The height of the cliff will be 25.05 m. The height of the cliff is obtained by the Newton equation of motion.

<h3>What is height?</h3>

The vertical distance between the object's top and bottom is defined as height. It is measured in centimeters, inches, meters, and other units.

The given data in the problem is;

Mass of diver(m)=90 kilogram

Time period(t)=2.26 sec

Initial velocity (u)=0 m/sec

The height attained by the cliff is;

$\rm H = ut + \frac{1}{2}gt^2 \\\\ H=\frac{1}{2}gt^2\\\\ H= \frac{1}{2}(9.81)(2.26)^2\\\\ H= \frac{1}{2} \times 9.81 \times 5.1076 \\\\ H=25.05 \ m$

Hence, the height of the cliff will be 25.05 m.

To learn more about the height, refer to the link;

brainly.com/question/10726356

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Artist 52 [7]2 years ago

3 0

Answer:

3.27 meters

Explanation:

mark brainliest please

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Answer:

5.625km/h

Explanation:

We are given that

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Speed, v2=7.5 km/h

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Time, $t=\frac{distance}{speed}$

Using the formula

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Average speed= $\frac{total\;distance}{total\;time}$

Average speed= $\frac{3.75}{2/3}=5.625km/h$

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3 years ago

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The electromagnet is a device that requires conducting wires wrapped around the iron core.

For making an electromagnet, the most necessary item is a copper wire.

What is an Electromagnet?

An electromagnet is a device that has conducting wires wrapped around an iron core. When electricity is passed through the wires, a magnetic field is generated. The setup acts as a strong magnet.

In order to make an electromagnet, a current-carrying wire is needed to wrap around a magnetic material. The current-carrying wires will play the role of conducting wires and the conducting wires are necessary to make an electromagnet. These wires can be made of copper.

Thus, we can conclude that for making an electromagnet, the most necessary item is a copper wire.

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