3 years ago

Is current was invented

1 answer:

4 0

One of the most important discoveries relating to current was made accidentally by Hans Christian Ørsted in 1820, when, while preparing a lecture, he witnessed the current in a wire disturbing the needle of a magnetic compass.

Explanation:

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In a pulley system, a 5-newton weight is to be lifted 2 meters. The rope is pulled 10 meters. The input force is two newtons.

loris [4]

The answers to the problem are as follows:

MA= 5

IMA= input distance/ output distance, 5

<span>AMA= output force/ input force, 5/2
</span>

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4 0

3 years ago

Read 2 more answers

What is the length of an aluminum rod at 65Â°C if its length at 15Â°C is 1.2 meters? A. 0.00180 meter B. 1.201386 meters C. 1.2

Deffense [45]

Answer:

Option B is the correct answer.

Explanation:

Thermal expansion

$\Delta L=L\alpha \Delta T$