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3 years ago

A body has density of 2kg/m² and volume 2m². Find the mass of the volume

Physics

2 answers:

creativ13 [48]3 years ago

7 0

Answer:

4kg

Explanation:

density is mass/ volume, 4/2= 2

expeople1 [14]3 years ago

3 0

Answer:

The mass is 4kg

Explanation:

Density of an object is defined as the ratio of the mass of the object to its volume. Mathematically,

Density = mass/volume

Mass is measured in kilogram (kg)

Volume is measured in m³

From the formula;

Mass = Density × volume

Mass = 2kg/m³ × 2m³

Mass = 4kg

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3 years ago

Calculate the work done by an applied force of 76.0 N on a crate for the following. (Include the sign of the value in your answe

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Answer:

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3 years ago

A 25 kg block is held against a compressed spring and then the spring is allowed to decompress giving the block a velocity. The

Alex787 [66]

Answer:

h=18.05 cm

Explanation:

Given that

m= 25 kg

K= 1300 N/m

x=26.4 cm

θ= 19.5 ∘

When the block just leave the spring then the speed of block = v m/s

From energy conservation

$\dfrac{1}{2}Kx^2=\dfrac{1}{2}mv^2$

$Kx^2=mv^2$

$v=\sqrt{\dfrac{kx^2}{m}}$

By putting the values

$v=\sqrt{\dfrac{kx^2}{m}}$

$v=\sqrt{\dfrac{1300\times 0.264^2}{25}}$

v=1.9 m/s

When block reach at the maximum height(h) position then the final speed of the block will be zero.

We know that

$V_f^2=V_i^2-2gh$

By putting the values

$0^2=1.9^2-2\times 10\times h$

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3 years ago

A body has density of 2kg/m² and volume 2m². Find the mass of the volume​

A body has density of 2kg/m² and volume 2m². Find the mass of the volume