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meriva
4 years ago
5

Which expression correctly describes energy using SI units? A. 1 J=1kg•m^2/s^2 B. 1 J= 1kg•m/s^2 C. 1 J= 1kg• m/s D. 1 J= 1kg•m^

2/s
Chemistry
1 answer:
o-na [289]4 years ago
8 0

Answer:

A. 1 J=1kg•m^2/s^2

Explanation:

Energy refers to the capacity to do work. According to the International System of units (SI units), energy is measured in Joules.

Energy is represented by the force applied over a distance. Force is measured in Newton (N) and distance in metres (m). Hence, energy is Newton × metre (N.m)

Newton is derived from the SI units of mass (Kilograms), and acceleration (metres per seconds^2) i.e Kg.m/s^2, since Force = mass × acceleration.

Since; Energy = Newton × metres

If Newton = Kg.m/s^2 and metres = m

Energy (J) will therefore be; Kg.m/s^2 × m

1J = Kg.m^2/s^2

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Explanation:

The SDS also informs that:

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4 0
4 years ago
What units should be used when describing the density of oil?
Alinara [238K]

Answer:

Generally, density is measured using he SI unit for measurement of density which is kg/m³ or the cgs units used to describe the density of a substance which is g/cm³

However, due to its nature (being composed of varying amount proportions of different compounds mixed together resulting in a variation of the density of naturally produced crude oil) of having different densities whereby the lighter oils are more easily processed than the heavier variety of oils, oil density is related to the quality of the oil and it is usually measures in API gravity as follows;

°API = (141.5/S.G.) - 131.5

Where;

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4 years ago
hat range, give the lower value and the higher value, respectively, for the following. (a) How many cubic meters of water are in
torisob [31]

Answer:

a) 9424797000 m3

b) 9424797000000 liters

c) 9424797000000 kg

Explanation

Cylinder has a radius of 1 km= 1000 m.

Area Cylinder = π r^2  =  3,141599* (1000m)^2  = 3141599 m2

a) Volume Cylinder= area x Height=3141599 m2* 3000 m=  9424797000 m3

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9424797000 kg

5 0
4 years ago
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