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3 years ago

Importance of SI system in points

Physics

1 answer:

monitta3 years ago

4 0

Answer:

SI unit is an international system of measurements that are used universally in technical and scientific research to avoid the confusion with the units. Having a standard unit system is important because it helps the entire world to understand the measurements in one set of unit system.

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You are trying to push a 14 kg canoe across a beach to get it to a lake. Initially, the canoe is at rest, and you exert a force

andreyandreev [35.5K]

Answer:

I hope this is correct!

Explanation:

a) work = (force)(displacement)

We know that d = 5m, now we just need to find the force

We need to calculate the acceleration first using a = v^2 - u^2 / 2d

final velocity (v) = 2.1 m/s , initial velocity (u) = 0 m/s , displacement (d) = 5m

a = 2.1^2 - 0^2 / 2(5)

= 0.441 m/s^2

Now we can find force using f = ma

f = (14kg)(0.441m/s^2)

= 6.174 newtons

Finally, you can calculate work now that you have force!

work = (6.174n)(5m)

= 30.87 J (you may need to round sig figs!)

b) Work done by friction = (coefficient of kinetic friction)(mg)(v)

m = 14kg, g = 9.8, coefficient of friction = 0.2

force due to friction = (0.2)(14kg x 9.8)(2.1)

= 57.624 J (again you may need to round to sig figs)

c) Work you perform = total work in direction of motion + work done by friction

total work = 30.87 J, work done by friction = 57.624 J

Work you perform = 30.84 + 57.624

= 88.464 J

d) Force you applied = work you performed / distance

work you performed = 88.464 / 5 m

= 17.6929 N (again you may need to round to sig figs)

Hope this helps ya! Best of luck <3

3 0

3 years ago

Please help will make brainliest

kumpel [21]

The Gulf of Mexico
OR
near trenches, in the middle of the ocean, the continental shelf, and lastly, in the United States

3 0

3 years ago

Read 2 more answers

? Question

Harrizon [31]

No Solution:

4x+10y = 40

2x + 5y = 40

2x - 8y=17

x - 4y = 7

One Solution:

2y - X= 12

2y - 2x =10

x + 10y =50

2x + 10y =90

Infinitely Many Solutions:

x + 2y = 1

3x + 6y= 3

2y - 3x = 5

2/5y -3/5x =1

Explanation: You only had 11 equations listed. But I believe these are the ones you want. I took the test and got them right. Hope it helps

3 0

3 years ago

Two campers in a national park hike from their cabin to the same spot on a lake, each taking a different path, as illustrated be

elixir [45]

Answer:

<em>Their displacement is 5 Km from the cabin.</em>

Explanation:

The displacement is define is the shortest distance between two points. It is the shortest distance of a line that joins two points together. It quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory. In this case, the straight line joining the cabin to the stream is line S which is equal to 5 Km

3 0

3 years ago

This is important I need to turn this in tomorrow, How many half-lives does it take to get from 1,000 to 125, and in what region

Alekssandra [29.7K]

It takes 3 half-lives:
1. 1000 -> 500
2. 500 -> 250
3. 250 ->125

I'm not sure about the Virginia thing so good luck!

And congratulations on being my first answer-person!!

3 0

3 years ago

Importance of SI system in points​

Importance of SI system in points