3 years ago

A Scalar can only be a positive quantity that has a magnitude but no direction ? a)-True b)-False

Engineering

1 answer:

Bogdan [553]3 years ago

8 0

false

im not sure

but they haven't a direction

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A hemispherical shell with an external diameter of 500 mm and a thickness of 20 mm is going to be made by casting, located entir

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Solution :

Given :

External diameter of the hemispherical shell, D = 500 mm

Thickness, t = 20 mm

Internal diameter, d = D - 2t

= 500 - 2(20)

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Two flat plates, separated by a space of 4 mm, are moving relative to each other at a velocity of 5 m/sec. The space between the

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Answer:

0.008

Explanation:

From the question, the parameters given are:

Velocity V = 5 m/s

Pressure = 10 pa

But pressure = F/A

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Substitute all the parameters into the formula below

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Where

F = tangential force,

r = distance between layers,

A = Area, and

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(η) = 10A × 0.004 /[A × 5]

The A will cancel out

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Answer:

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Explanation:

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