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ICE Princess25 [194]
3 years ago
14

Why should we convert units within the metric system?

Physics
1 answer:
dexar [7]3 years ago
6 0
We need it to calculate the how big it is, it’s mass, or even volume to get the measurements of lots of objects
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A farmer uses 3450 J of energy on a wheel and axle to lift a 15 kg bucket of water 20 m to the top of her well. What is the effi
Anika [276]

<span>Efficiency is the measure of how efficient a process is. It is used to assess the ability of a process in avoiding waste energy, materials, money and time in doing a desirable output. It is calculated as;

Efficiency = useful energy ouput / total energy input</span>

<span>Efficiency = 15(9.81)(20) / 3450 = 0.85</span>

8 0
3 years ago
Read 2 more answers
Velocity is a: a) Fundamental quantity b) MKS system c) Standard system d) Derived quantity​
Naya [18.7K]

Velocity is a derived quantity, which is derived from two fundamental quantities ilength ( displacement ) and time

it can be depicted as :

  • \boxed{ \boxed{velocity =  \dfrac{displacement}{time} }}

4 0
3 years ago
Describe atmospheric pressure and water pressure​
OverLord2011 [107]

Answer:

The difference is that water is an incompressible fluid — its density is almost constant as the pressure changes — while air is a compressible fluid — its density changes with pressure. ... Atmospheric pressure is the pressure exerted on a surface by the weight of the atmosphere (a compressible fluid) above it

Explanation:

change some words

6 0
3 years ago
A large spring requires a force of 150 N to compress it only 0.010 m. What is the spring constant of the spring?
soldi70 [24.7K]

Answer:

15000N/m

Explanation:

Given Force F=150 N

compressed distance = 0.010 m

We know that force on a spring due to to compression or elongation is given by F=kx here k is force constant and x is compressed or elongated distance

We have to find force constant

So F=kx=k\times 0.010

k=\frac{150}{0.010}=15000N/m

8 0
3 years ago
A rock is thrown from a cliff with a horizontal velocity of 12.6m/s it lands in the water below 1.45 seconds later, how high is
Nadusha1986 [10]

Answer:

The height of the cliff is 28.57 m.

Explanation:

Given;

initial velocity of the rock, u = 12.6 m/s

time of motion, t = 1.45 s

The height of the cliff is given by;

h = ut + ¹/₂gt²

h = (12.6 x 1.45) + ¹/₂(9.8)(1.45)²

h = 18.27 + 10.30

h = 28.57 m

Therefore, the height of the cliff is 28.57 m.

6 0
3 years ago
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