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gavmur [86]
2 years ago
7

Use heavy-duty grounded extension cords. Heavy-duty cords will have a marking on the insulation such as ___.

Physics
1 answer:
Shalnov [3]2 years ago
7 0

Heavy-duty cords will have a marking on the insulation such as letters which indicates its properties.

<h3>What are Heavy duty cords?</h3>

Heavy duty cords comprises of insulators which helps prevent cases of electric shock. There are usually letters written on them which indicates the nature of insulation and other properties.

For example, the  "S" in "SO" stands for "Extra Hard Service and the "O" stands for oil resistant.

Read more about Cords here brainly.com/question/13600515

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Answer:

Explanation:

Volume of lead object = volume of aluminium object = V

mass of lead object > mass of aluminium object

When both the objects immersed in water, the buoyant force acting on both the objects.

Buoyant force = Volume immersed  x density of water x gravity

As the volume of both the objects is same, so the buoyant force acting on both the objects is same.

So, weight in air of lead object is more than the weight in air of aluminium object.  

7 0
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Please help with the chart.
eimsori [14]
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8 0
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A 3 Kg ball at the end of a string is spun in a circle. If the length of the string is 2 m and the velocity of the ball is 6 m/s
gulaghasi [49]
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r is 2m
v is 6m/s

Fc = mv^2 / r
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3 0
2 years ago
A ball is dropped from some height. It bounces off the floor and rebounds with a speed that is one-half the speed it had just be
Arada [10]

Answer:

The correct option is C

Explanation:

According to third equation of motion, v

2

=u

2

+2ax

Here, u=0 m/s

a=−g and x=−h

Negative sign indicates downward direction. Displacement and acceleration both are downwards.

So,v=±

2(−g)(−h)

​

We take minus sign because it is downwards.

v=−

2gh

​

After bouncing. velocity becomes 80% of v, i.e.,

v

′

=+0.8

2gh

​

 

(positive sign because the direction of ball has reversed after bouncing and is upwards.

Applying third equation of motion again, for u=v

′

, v=0 and a=−g

v

2

=u

2

+2×a×x

Thus,

0=0.64(2gh)+2(−g)x

or

x=0.64h

3 0
2 years ago
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