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4 years ago

Before a star is born, the matter that will become the star exists as a

Physics

2 answers:

vazorg [7]4 years ago

6 0

Answer:

The answer is D

Explanation:

I'm too lz to explain everything.

sorry.

zloy xaker [14]4 years ago

3 0

Answer:

The answer is D) cool, dark nebula

Explanation:

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A 2.35 kg ball is attached to a ceiling by a3.53 m long string. The height of the room is5.03 m .The acceleration of gravity is

Studentka2010 [4]

Answer:-81.29 J

Explanation:

Given

mass of ball $m=2.35 kg$

Length of string $L=3.53 m$

height of Room $h=5.03 m$

Gravitational Potential Energy is given by

$P.E.=mgh$

where h=distance between datum and object

here Reference is ceiling

therefore $h=-3.53 m$

Potential Energy of ball w.r.t ceiling

$P.E.=2.35\times 9.8\times (-3.53)=-81.29 J$

i.e. 81.29 J of Energy is required to lift a ball of mass 2.35 kg to the ceiling

3 0

3 years ago

Charge is distributed uniformly along a long straight wire. the electric field 2 cm from the wire is 20 n/c. the electric field

Serjik [45]

The electric field 4cm from the wire is

$É = 10nc { }^{ - 1}$

Given:

charge is distributed uniformly along a long straight wire.

electric field 2cm from the wire is 20n/c

To find:

electric field 4cm from the wire

what is electric field?

Electric field is the region around charge particle or charged body in which if another charge is placed it experiences electrostatic force.An electric field is the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them.

$E ∝ \frac{1}{r}$

$\frac{E}{É} = \frac{r2}{r1}$

$\frac{20}{ É } = \frac{4}{2}$

$É = \frac{40}{4}$

$É = 10nc {}^{ - 1}$

thus the electric field 4cm from the wire is

$É = 10nc { }^{ - 1}$

learn more about electrostatic force from here: brainly.com/question/28166144

#SPJ4

7 0

2 years ago

The carbon monoxide molecule (CO) consists of a carbon atom and an oxygen atom separated by a distance of

valkas [14]

Answer:

6.46*10^-11m

Explanation:

We can use the equation of the center of the mass of two atoms

$Xcm=\frac{mcxc+moxo}{mc+mo}$

If we take the origin at the center of the molecule carbon monoxice, xc will be 0, so

$Xcm=\frac{moxo}{mc+mo}$ = $\frac{xo}{mc/mo+1}$

$Xcm=\frac{1.13.10^-3}{0.750mo/mo+1}$ =6.46*10^-11m

7 0

3 years ago

V=I/R correctly expresses the relationship between voltage, current, and resistance.

docker41 [41]

The correct answer is true

5 0

2 years ago

Read 2 more answers

Based on einstein's theory of gravity, if the sun and its mass were suddenly to disappear, earth would:________

g100num [7]

Based on Einstein's theory of gravity, if the sun and its mass were to suddenly disappear, earth would stay in its current orbit for a few minutes before taking off into space.

<h3>What would occur to our world if the sun were to suddenly vanish?</h3>

The Earth would be drawn to a new center of gravity if the sun disappeared. Earth's gravity would change, as would that of the rest of the solar system, and Earth would begin to drift into space since there would no longer be a steady source of energy from the sun. It is a foolish dream to think that life could exist without the sun forever. Humans could be able to survive for a while in some sort of base, such as a nuclear-powered dome.

The good news is that there wouldn't be many living things for the radioactive waste to endanger; however, there also probably wouldn't be any liquid water to cool the power system. All photosynthetic species, including plants and algae, would die if just the sun's light persisted.

To learn more about The Sun and Earth, visit:

brainly.com/question/12243192

#SPJ4

5 0

2 years ago