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Vaselesa [24]
3 years ago
13

Light travels at the speed of approximately 3.0 × 108 meters per second. Find the time in minutes required for light to travel f

rom the sun to Earth (an approximate distance of 1.5 × 1011 meters).
Physics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:

  t = 8.33 minutes

Explanation:

given,

Speed of Light, v = 3 x 10⁸ m/s

distance between sun to Earth = 1.5 x 10¹¹ m

time taken to reach earth = ?

we know,

Distance = speed x time

t = \dfrac{d}{s}

t = \dfrac{1.5\times 10^{11}}{3\times 10^8}

      t = 500 s

1 min = 60 s

now, t = \dfrac{500}{60}\ minutes

          t = 8.33 minutes

time taken by the light to reach earth is equal to 8.33 minutes.

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Which form of energy is equal to the sum of an object’s kinetic and potential energy?
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Answer:

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Explanation:

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In each of the parts of this question, a nucleus undergoes a nuclear decay. Determine the resulting nucleus in each case.
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Answer:

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(B). The resulting nucleus is Po.

(C). The resulting nucleus is Ne

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Explanation:

Given that,

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(A). In alpha decay,

We know that,

When the nucleus emit alpha particle then atomic mass of particle reduce by 4 and atomic number reduce by 2.

We need to calculate the resulting nucleus

Using given data

^{227}_{89}Ac\Rightarrow ^{227-4}_{89-2}X

^{227}_{89}Ac\Rightarrow ^{223}_{87}Fr

The resulting nucleus is Fr.

(B). In beta-minus decay,

We know that,

When the nucleus emit beta- minus particle then atomic mass of particle is same and atomic number increase by 1.

We need to calculate the resulting nucleus

Using given data

^{211}_{83}Bi\Rightarrow ^{211}_{83+1}X

^{211}_{83}Bi\Rightarrow ^{211}_{84}Po

The resulting nucleus is Po.

(C). In beta-plus decay,

We know that,

When the nucleus emit beta- plus particle then atomic mass of particle is same and atomic number decrease by 1.

We need to calculate the resulting nucleus

Using given data

^{22}_{11}Na\Rightarrow ^{22}_{11-1}X

^{22}_{11}Na\Rightarrow ^{22}_{10}Ne

The resulting nucleus is Ne.

(D). In gamma decay,

We know that,

When the nucleus emit gamma particle then atomic mass and atomic number of particle is same.

We need to calculate the resulting nucleus

Using given data

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The resulting nucleus is Tc.

Hence, (A). The resulting nucleus is Fr.

(B). The resulting nucleus is Po.

(C). The resulting nucleus is Ne

(D). The resulting nucleus is Tc.

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3 years ago
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Pressure is measured as force per unit area, which is the third option.

<h3>What is pressure?</h3>

Pressure is amount of force that is applied over a given area divided by the size of this area.

Pressure is calculated by multiplying the force applied on the object by the area covered.

Since force is measured in Newtons (N) and area is measured in m², the unit of pressure is Nm².

Therefore, pressure is measured as force per unit area.

Learn more about pressure at:

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2 years ago
What is the term used for sediments building up at the mouth of the river? (Hint: think New Orleans)
meriva
I believe it’s called Alluvium! It’s where the river mouth is build up of gravel,sand,silt, and clay!!
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