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3 years ago

Scientist use conversion factors to express the given value of a unit different type of unit true or false

Physics

2 answers:

kykrilka [37]3 years ago

4 0

True.

Scientist use conversion factors to express the given value of a unit different type of unit

Alex17521 [72]3 years ago

3 0

Answer:

The statement "Scientist use conversion factors to express the given value of a unit different type of unit" is true.

Explanation:

A conversion factor is a mathematical operation, to make changes of units of the same magnitude, or to calculate the equivalence between the multiples and submultiples of a given unit of measure.

It consists of multiplying the original quantity by a fraction in which the numerator and denominator contain the same quantity but expressed in different units, in order to simplify the original unit and obtain the new unit.

The statement "Scientist use conversion factors to express the given value of a unit different type of unit" is true.

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A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle

djverab [1.8K]

Answer:

a. 7.046 Nm²/C

b. 2.348 Nm²/C

Explanation:

Data given:

Base of equilateral triangle = 25.0 cm = 0.25 m

Strength of electric field = 260 N/C

In order to find the electric flux we first have to find out the area of triangle.

Area of triangle = $\frac{\sqrt{3} }{4} a^{2}$

= $\frac{\sqrt{3} }{4} (0.25)^{2}$

= 0.0271 m³

Lets find electric flux,

Electric Flux = E. A

= 260×0.0271

= 7.046 Nm²/C

Now we can find the electric flux through each of the three sides.

Electric flux through three sides = $\frac{7.046}{3}$

= 2.348 N m²/C

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3 years ago

A 25kg chair initially at rest on a horizontal floor requires a 165 N horizontal force to set it in motion. Once the chair is in

SCORPION-xisa [38]

Answer:

$\mu_k=0.51$

Explanation:

Given that

Mass , m = 25 kg

We know that when body is in rest condition then static friction force act on the body and when body is in motion the kinetic friction force act on the body .That is why these two forces are given as follows

Static friction force ,fs= 165 N

Kinetic friction force ,fk = 127 N

If the body is moving with constant velocity ,it means that acceleration of that body is zero and all the forces are balanced.

Lets take coefficient of kinetic friction = μk

The kinetic friction is given as follows

fk = μk m g

Now by putting the values

127 = μk x 25 x 9.81

$\mu_k=\dfrac{127}{25\times 9.81}$

$\mu_k=0.51$

Therefore the value of coefficient of kinetic friction will be 0.51

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2 years ago

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Answer:

Explanation:

Work done in carrying bricks

mgh

= 207 x 9.8 x 3.65

-= 7404.4 J

Work done in compressing gas

PΔV

Pressure x change in volume

1.8 x 10⁶ ΔV = 7404.4

ΔV = 7404.4 / 1.8 x 10⁶m³

= 4113.33 x 10⁻⁶ m³

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3 years ago

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Find the force on an object which has the mass of 20kg and an acceleration of 10m/s

Elis [28]

Answer:

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Explanation:

20 kg x 10 m/s squared

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