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Novosadov [1.4K]
3 years ago
15

Measurement is essential in our life.justify the statement.​

Physics
1 answer:
polet [3.4K]3 years ago
5 0

Answer:

Measurements allow people to find their way to new places. Measurements such as miles or kilometers are used by GPS systems to give directions. Time measurements help to create schedules so tasks get done on time. Measurements are used in food as well. Ingredients in recipes have to be measured to make the dish correctly. Serving sizes are a measurement that keep people healthy by showing how much of each food you should eat.

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Which device converts chemical energy directly into electrical energy?
Molodets [167]

Answer:

A

Explanation:

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3 years ago
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A sail boat moves north for a distance of 10 km when blown by a wind 30° east of south with the force of 5.00×10^4 N. how much w
erma4kov [3.2K]
<h3><u>Answer;</u></h3>

a) 5.00 x 10^8 J

<h3><u>Explanation;</u></h3>

The work done to move the sailboat is calculated through the equation;

W = F x d

where F is force and d is the distance.

Substituting the known values from the given above,

                             W = (5.00 x 10⁴ N)(10 km)(1000 m/ 1km)

                                 = 5.00 x 10⁸ J

Thus, the work done is <u>5.00 x 10⁸Joules</u>

7 0
3 years ago
What is science ? ????????​
Arada [10]

Answer:

the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.

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3 years ago
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Air is enclosed in a syringe at room temperature. The end is the pushed so the air only fills a 1/3 of the length of the syringe
borishaifa [10]

Answer:

A) Does not change

B) Decrease

C) Increasing

D) Increasing

Explanation:

When it pushes it's volume is reduced by 1/3 because it's Area is constant there for only volume is decreased. Then the number of molecules don't change

A) don,t change

B) Decreases

C) Density is increased because it mass doesn't change. there for

Mass = Density * Volume

When Volume is decreasing to keep mass constant Density will be increased.

D) Pressure is increased according to the boil's law. it says that for fixed mass and fixed temperature pressure is inversely proportional to the volume. then volume decrease pressure increase  

4 0
3 years ago
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A capacitor in an LC oscillator experiences a maximum potential difference of 88V and a maximum energy of 2002 uJ. At a certain
VLD [36.1K]

Answer:

Explanation:

maximum energy of capacitor

E = 1/2 C V ²

C is capacitance of capacitor and V is potential difference

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E = 2002 x 10⁻⁶ J

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2002 x 10⁻⁶ = 1/2 x C x 88²

C = .517 x 10⁻⁶ F  .

In the second case

Energy E = 125 x 10⁻⁶ J .

C = .517 x 10⁻⁶

V =  ?

E = 1/2 C V ²

125 x 10⁻⁶  = 1/2 x  .517 x 10⁻⁶ x V²

V² = 483.55

V = 21.98 V .

6 0
4 years ago
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