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3 years ago

3. Will the weight of a kg of iron in air and the weight of a kg of cotton in air

Physics

2 answers:

ch4aika [34]3 years ago

8 0

Answer: Due to atmospheric pressure 1 Kg of Cotton is slightly heavier than 1 kg of Iron.

Explanation: According to me cotton will be more lighter as air is a fluid and Archimedes principal applies on it. As cotton occupies more volume it will feel more up thrust and more loss in weight. That cotton is more heavier .

larisa [96]3 years ago

4 0

Answer:

A kg of cotton is heavier.

Explanation:

Because in air, cotton gets upthrust that's why weighing machine gives less weight than its actually have.

for eg: If cotton has 800g weight, the machine shows a kg(1kg) when measure in air due to upthrust.

I hope this will be helpful for you.

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Listening to your favorite radio station involves which area of physics?

lukranit [14]

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3 years ago

If the distance between two charged particles is increased 2.69 times, the ratio of new to old electric force is _______ times t

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Answer:

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1 year ago

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3 years ago

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What affects a material’s resistance?

Keith_Richards [23]

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3 years ago

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What is the magnitude of the impulse that would cause the 2-kg box to accelerate from 2 m/s to 5 m/s?

Law Incorporation [45]

6 J is the impulse caused by the change in velocity of 2 kg box from 2 m/s to 5 m/s.

Answer:

The magnitude of impulse is 6 J.

Explanation:

Impulse is the force acting on any object for a given time interval. As force is equal to the product of mass and acceleration and acceleration is the rate of change of velocity with time. Then the product of force with time interval will be equal to the product of mass with change in velocity.

F = m a = $\frac{m(v-u)}{(t_{2}-t_{1} )}$

FΔt = mΔv

Impulse = FΔt=mΔv

As the mass of box is given as 2 kg and the velocity changes from 2 m/s to 5 m/s, then the impulse = 2 × (5-2) = 2 ×3 =6 J

So 6 J is the impulse caused by the change in velocity of 2 kg box from 2 m/s to 5 m/s.

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3 years ago