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3 years ago

A block of aluminium of density 7900 kg/m3 has a volume of 250 cm. Find themass of the block.

Physics

1 answer:

pashok25 [27]3 years ago

8 0

Answer:

mass of block=2.7 gm

Explanation:

concept: Density=mass/volume

given:ρ=2700 kg/m^3 and v=250 cm^3 (in cm^3 not in m^3)

=> v= convert cm^3 to m^3

there fore= 1 cm^3=1 cm*1 cm*1 cm

i.e 1 cm^3=1/100*1/00*1/100 m^3 => 1 cm^3=1/1000000 m^3

ρ=m/v

=>mass=ρ*volume

=>mass=2700*1/10^-6

=>mass=2.7*10^-3 kg =>2.7 gm

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3 years ago

block of mass 5kgriding on a horizontal frictionlessxy-plane surface is subjected tothree applied forces:→F1= 12√2N[ 45◦]→F2= (8

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Answer:

(i) See attached image for the drawing

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First try to write all forces in vector component form:

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3 years ago

What is the acceleration of a 600,000 kg freight train, if each of itsthree engines can provide 100,000 n of force?

sergey [27]

The acceleration of a 600,000 kg freight train, if each of its three engines can provide 100,000N of force is 0.167m/s².

<h3>How to calculate acceleration?</h3>

The acceleration of a freight train can be calculated using the following formula:

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2 years ago

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3 years ago

A block of aluminium of density 7900 kg/m3 has a volume of 250 cm. Find themass of the block.​

A block of aluminium of density 7900 kg/m3 has a volume of 250 cm. Find themass of the block.