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4 years ago

Describe the process of star formation

Physics

1 answer:

inysia [295]4 years ago

3 0

Answer:

Explanation:

1. Gravity condenses a dense cloud (nebulae) of gas (there is nothing to fight gravity at this point)

2. As density increases, pressure increases, pushing against gravity

3. As pressure rises, temp rises and if temp gets hot enough (if mass large enough) nuclear reactions wills start.

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Which of the following terms describes the motion of particles during the transmission of wave energy?

bezimeni [28]

The motion of particles during the transmission of wave energy is periodic. A periodic wave is a continuous oscillating motion that connects with simple harmonic motion. It is usual that periodic wave particles also experiences simple harmonic motion. Additionally, the particles on the surface of the water travel in circular motions forming a wave across the surface.

7 0

3 years ago

The resistance of moving surfaces produces ________?

Ksenya-84 [330]

The resistance of moving surfaces produces friction.
Friction always results in a loss of energy in the form of heat which enters the atmosphere.
True.
Oil or water clinging to a surface of a jar is an example of...
The last one I believe is either fraction or adhesion.

7 0

3 years ago

A cubic tank holds 1,000.0 kg of water. what are the the dimensions of the tank in meters? explain your reasoning

Scilla [17]

Given: A cubic tank holds 1,000.0 kg of water.

Mass of water in tank (m) = 1000.0 kg

Density of water (d) = 1000.0 kg /m³

Concept: Volume(V) = Mass / Density

Since the tank holds these water in it so the volume of water will be equal to the volume of the tank.

Hence, the volume of the tank = Mass of water / Density of water

or, = 1000.0 kg / 1000.0 kg m⁻³

or, = 1.0 m³

Since tank is cubical in shape. Let its side be 'x'

The volume of tank (x³) = 1.0 m³

or. side of tank (x) = 1.0 m

Hence, the dimensions of the tank will be 1.0 m.

8 0

4 years ago

A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end

Dominik [7]

Answer:

wavelength = 0.8989 m

Explanation:

Given data:

weight of wire is 8.25 g

length of wire is 65 cm

speed of sound in room is 344 m/s

time of returning of pulse is 7.84 ms

There are three time period

Time period $= \frac{7.84\times 10^{-3}}{3} = 2.6133\times 10^{-3} s$

$frequency = \frac{1}{T}$

$=\frac{ 1}{2.6133\times 10^{-3})} = 382.6579 Hz$

velocity = wavelength × frequency

wavelength $= \frac{velocity}{frequency}$

$= \frac{344}{382.6579}$

wavelength = 0.8989 m

6 0

3 years ago

An ant climbs at a steady speed up the side of its

lianna [129]

The weight of the ant is the force that acts on the anthill in the <u>downward direction</u> and at angle of 30° rom the vertical.

<u>Given the following data:</u>

Angle of inclination = 30.0°.

<h3>What is a free-body diagram?</h3>

In Science, a free-body diagram can be defined as a graphical illustration which is typically used to visualize moments, tension, and applied forces that are acting on an isolated or rigid body (object) while using arrows pointing in the direction of these forces.

In this scenario, the weight of the ant is the force that acts on the anthill in the <u>downward direction</u> and at angle of 30° rom the vertical.

Read more on free-body diagram here: brainly.com/question/18770265

8 0

2 years ago