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liraira [26]
3 years ago
12

Carry out the following calculation. Express your answer in the correct number of significant figures.

Physics
1 answer:
77julia77 [94]3 years ago
3 0

Answer:

43.1 g

Explanation:

Density, d is defined as the mass per unit volume of an object. Density is therefore expressed as

d=m/v

Here, m is mass and v is the volume

Making mass the subject of the formula

Mass, m=dv

The volume, v is given by

V=lwh

Substituting lwh for v in the equation for mass then mass, m=dlwh

Substituting 2.6 g/cm3 for d, 4.0 cm for l, 1.8 m for w and 2.3 for h then the mass of the block will be

M=2.6*4*1.8*2.3=43.056 g

Expressing it in 1 decimal place, mass is approximately 43.1 g

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Answer:

UAC CUG AGG AUC

Explanation:

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CALCULATION :

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Velocity of sound is dependent on temperature. More is the temperature, more is velocity of sound.

The velocity at this temperature is calculated as -

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