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lapo4ka [179]
3 years ago
9

What happened to an iron bar if it is heated from 32 degree Celsius to 64 degree Celsius

Physics
1 answer:
olganol [36]3 years ago
5 0

Answer:

it got hotter

Explanation:

it just did

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What is a major goal of the federal government when managing land resources?
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Answer:

I just took the quiz and got 100% when choosing A.Conservation. Hope this helps:)

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3 years ago
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The standard measure used to compare sound intensities is the ______ .
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The answer is Decibels. <span />
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In a single-slit diffraction experiment, the slit is 0.1mm wide and is illuminatedby monochromatic light with a wavelength of 50
dem82 [27]

Answer:

0.1 m

Explanation:

d = slit width = 0.1 mm = 0.1 x 10⁻³ m

\lambda = wavelength of monochromatic light = 500 nm = 500 x 10⁻⁹ m

D = Distance of the screen = 10 m

w = Spacing between successive minima

Spacing between successive minima is given as

w = \frac{2D\lambda }{d}

Inserting the values given

w = \frac{2(10)(500\times10^{-9}) }{0.1\times10^{-3}}

w = 0.1 m

4 0
3 years ago
At a sports car rally, a car starting from rest accelerates uniformly at a rate of 5 m/s/s over a straight-line distance of 291
Bogdan [553]

Answer:

10.8 s

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 0 m/s

Acceleration (a) = 5 m/s/s

Distance travelled (s) = 291 m

Time (t) taken =?

We can calculate the time taken for the car to cover the distance as follow:

s = ut + ½at²

291 = 0 × t + ½ × 5 × t²

291 = 0 + 2.5 × t²

291 = 2.5 × t²

Divide both side by 2.5

t² = 291 / 2.5

t² = 116.4

Take the square root of both side

t = √116.4

t = 10.8 s

Thus, it will take the car 10.8 s to cover the distance.

8 0
3 years ago
1. An object of mass 300 kg is observed to
vekshin1

Answer:

The force required will be "300 N".

Explanation:

The given values are:

Mass of object,

m = 300 kg

Acceleration,

a = 1 m/s

Now,

The force will be:

⇒  F=m\times a

On substituting the values, we get

⇒      = 300\times 1

⇒      =300 \ N

4 0
3 years ago
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