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4 years ago

A star is a ___ that emits energy produced by nuclear reactions in its interior.

1 answer:

5 0

A star is a large ball of gas that emits energy produced by nuclear reactions in the star's interior. Much of this energy is emitted as electromagnetic radiation, including visible light. Light emitted by stars enables other objects in the universe to be seen by reflection.

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Acar goes from 20m/s to 30m/s in 10 seconds what is its acceleration

prohojiy [21]

Acceleration = change in velocity/change in time

= (30 - 20) / 10 - 0

= 10 / 10

Acceleration = 1 m/s²

8 0

3 years ago

The force of gravity considers which two parts?

attashe74 [19]

Mass of object/source
Gravity
Fg=mg

3 0

3 years ago

Use the periodic table from the lesson to answer the following question.

kodGreya [7K]

Answer:

18.99u or 19u

Explanation:

Mass number=No of protons+No of neutrons

$\\ \sf\longmapsto 9+10$

$\\ \sf\longmapsto 19u$

Fluorine has atomic number=9
The Electronic configuration is given by

$\\ \sf\longmapsto 1s^22s^22p^5$

7 0

3 years ago

Read 2 more answers

Calculate the relativistic speed of a particle at a time 6 s after it star t = 0 s . The mass of the particle is 6 × 10-2 kg and

Mars2501 [29]

Answer:

The relativistic speed of a particle is $0.0333\times10^{-5}c$

Explanation:

Given that,

Time = 6 sec

Force = 1

Mass of the particle $m=6\times10^{-2}\ kg$

We need to calculate the acceleration

Using formula of acceleration

$a = \dfrac{F}{m}$

Put the value into the formula

$a=\dfrac{1}{6\times10^{-2}}$

$a=16.67\ m/s^2$

We need to calculate the velocity after 6 sec

Using equation of motion

$v = u+at$

Put the value

$v=0+16.67\times6$

$v=100\ m/s$

The velocity in term of c

$v=\dfrac{100c}{3\times10^{8}}$

$v=3.333\times10^{-7}c$

$v=0.0333\times10^{-5}c$

Hence, The relativistic speed of a particle is $0.0333\times10^{-5}c$

6 0

3 years ago

List THREE main points of the kinetic theory of matter

Assoli18 [71]

The three main points of the kinetic theory of matter are all matter consists of molecules and atoms; these molecules and atoms are constantly moving around; and as the temperature increases, the speed of the particles, and therefore the energy of the matter, increases.

3 0

4 years ago