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3 years ago

the mass of a brick is 4 kg, find the mass of water displaced by it when completely immersed in water.

Physics

1 answer:

vova2212 [387]3 years ago

4 0

Answer:

The correct answer is = 1.6

Explanation:

Density of water = 1000kg/m³ = d₁

Mass of brick = 4kg = m

Density of brick = 2.5 g/cm³ = 2.5 × 1000 =2500 kg/m³ = d₂

Volume of brick = m/d₂ = 4/2500 =16/10000 = 0.0016 L = v

Buoyant Force = v × d₁ × g (g= acceleration due to gravity =9.8m/s²)

= 0.0016 × 1000 × 9.8 = 15.68 Newtons

By the Archimedes' Principle, the buoyant force is equal to the weight of the liquid displaced by an object.

Weight of the water displaced=Buoyant Force

=Mass of water displaced × g,

as weight = mass × acceleration due to gravity

15.68= mass of brick × 9.8

15.68/9.8 =Mass of water displaced

1.6 kg = Mass of water displaced

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A car moves with a speed of 72 km/h for 15 minutes and then with a speed of 80 km/h for the next 12 minutes. The total distance

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Answer:

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The acceleration of the car is given as;

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The total distance covered by the car is given as;

v² = u² + 2as

where;

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s = 93.728 / 0.0246

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Hoochie [10]

Answer:

f = 147.21 Hz

Explanation:

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We need to know the distance from the listener to the other speaker, located 4.4 m from the one which is directly in front of him, which we can find using Pythagorean theorem, as follows:

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v = λ*f Κ ⇒ f = v/λ

Taking the speed of sound as 343 m/s, and solving for f, we get:

f= 343 m/s / 2.33 m = 147.21 Hz

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3 years ago

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Answer:

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3 years ago

A 4 kilogram box is at rest on a frictionless floor. A net force of 12 newtons acts on it. What is the acceleration of the box?

Rashid [163]

Answer:

Explanation:

Step one:

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4 0

3 years ago

the mass of a brick is 4 kg, find the mass of water displaced by it when completely immersed in water.​

the mass of a brick is 4 kg, find the mass of water displaced by it when completely immersed in water.