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3 years ago

If a satellite or spaceship explodes in outer space, you can see the explosion from a distance but you cannot hear it. Why?

Chemistry

2 answers:

lidiya [134]3 years ago

7 0

Answer:The correct answer is option C.

Explanation:

Mechanical wave is a wave that produce from the oscillation of matter and transfer energy through the medium.They are incapable of moving through vacuum.

Electromagnetic wave is a wave composed of two vectors vibrating perpendicular to each other in the same direction in which wave is moving.The two vectors are electric field and magnetic field.They are capable of travelling through vacuum.

Light wave is an electromagnetic wave.Electromagnetic waves can easily travel through space. Where as sound is a mechanical wave which requires medium to travel.

Hence, correct answer is option C.

labwork [276]3 years ago

3 0

C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave.

There is no air for the sound waves to travel, therefore, no sound waves being transmitted.

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What is the name of the phase where stars live out most of their lives?

lisov135 [29]

The correct option is B.
Stars live out most of their lives at MAIN SEQUENCE. Stars generally are divided into three major stages, these are:
1. Pro stars and pre-main sequence star
2. Main sequence and giant star
3. Variable stars
Major stages in the life of a star can last for millions of years.

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4 years ago

A gamma ray photon has an energy of 4.75 x 10-14 joules. What is the frequency of this radiation?

Rama09 [41]

The frequency of the radiation is equal to $7.17 \times 10^{19}$ Hertz.

Given the following data:

Photon energy = $4.75 \times 10^{-14}$ Joules

To find the frequency of this radiation, we would use the Planck-Einstein equation.

Mathematically, the Planck-Einstein relation is given by the formula:

$E = hf$

Where:

h is Planck constant.

f is photon frequency.

Substituting the given parameters into the formula, we have;

$4.75 \times 10^{-14} = 6.626 \times 10^{-34} \times F\\\\F = \frac{4.75 \times 10^{-14}}{6.626 \times 10^{-34}}$

Frequency, F = $7.17 \times 10^{19}$ Hertz

4 0

3 years ago

The statement that percent yield can never be greater than theoretical yield is another example of the ________.

Gnom [1K]

We can rephrase the statement with a little more specificity in order to understand the answer here.

The mass of the products can never be more than the The mass that is expected.

3 0

3 years ago

Which is carried by waves? disturbance energy matter space

MariettaO [177]

I believe the answer would be energy

7 0

3 years ago

Read 2 more answers

All oxygen atoms have eight protons, and most have eight neutrons as well. What is the mass number of an oxygen isotope that has

denis-greek [22]

Answer: The mass number of an oxygen isotope that has nine neutrons is 17 and isotope is called as Oxygen-17.

Explanation:

Atomic number is defined as the number of protons or number of electrons that are present in an atom.

For a neutral atom:

Atomic number = Number of electrons = Number of proton

Atomic number= Number of protons = 8

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

Given: Number of neutrons = 9

Thus mass number = Number of protons + Number of neutrons = 8 + 9 = 17.

Isotopes are elements which have same atomic number but different mass number.

Thus the mass number of an oxygen isotope that has nine neutrons is 17 and isotope is called as Oxygen-17.

5 0

3 years ago