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3 years ago

Explain why cooler stars are red and hotter stars are blue

1 answer:

8 0

More cool stars produce much of their light in the red part of the spectrum, so you see them, and bam, the color red. More hot stars, however, produce much more of their light in the green and or yellow spectrums, with much more tinier amounts of red / blue. This balance of the colors, your eye, sees simply as white. The more hot something is, the greater frequency of radiation it produces! Blue light has a higher frequency than red light, so the stars that glow red are cooler, than the stars that glow blue. :)

Hope this helped!

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A rubbit gets down from a rump which its /\x=0.85m in 0.5s, The rubbit's mass is 2kg, what is the net Force?

Ira Lisetskai [31]

Answer: 13.6 N

Explanation:

The equation of motion for the rabbit is:

$\Delta x=V_{ox}t+\frac{1}{2}a_{x}t^{2}$ (1)

Where:

$\Delta x=0.85 m$ is the distance traveled by the rabbit

$V_{ox}=0 m/s$ is the rabbit's initial velocity, assuming it started from rest

$t=0.5 s$ is the time

$a_{x}$ is the acceleration

Isolating $a_{x}$ :

$a_{x}=\frac{2 \Delta x}{t^{2}}$ (2)

$a_{x}=\frac{2 (0.85 m)}{(0.5)^{2}}$ (3)

$a_{x}=6.8 m/s^{2}$ (4)

On the other hand, the force $F_{x}$ is given by:

$F_{x}=m.a_{x}$ (5)

Where $m=2 kg$ is the mass of the rabbit

Substituting (4) in (5):

$F_{x}=(2 kg)(6.8 m/s^{2})$ (6)

Finally:

$F_{x}=13.6 N$

6 0

3 years ago

Jurgen Habermas introduced this concept in the concept of intersubjectivity?to designate an individual capacity and a social dom

romanna [79]

Jurgen Habermas is a German philosopher and sociologist which is an expert in the field of critical conjecture and pragmatism. He is most widely known for his theories regarding communicative rationality and the public sphere. This concept of intersubjectivity is called as:

“Intersubjectivity of mutual understanding”

8 0

3 years ago

Suppose a straight wire with a length of 2.0 m runs perpendicular to a magnetic field with a magnitude of 38 T. What current wou

iragen [17]

Answer:

9.67 A

Explanation:

The weight of a student with a mass of m = 75 kg is:

$W=mg=(75 kg)(9.8 m/s^2)=735 N$

where g=9.8 m/s^2 is the acceleration due to gravity.

We want the magnetic force on the wire to be equal to this weight. The magnetic force on the wire is

$F=ILB sin \theta$

where

I is the current in the wire

L = 2.0 m is the length of the wire

B = 38 T is the magnetic field

$\theta=90^{\circ}$ is the angle between the direction of B and L

Since we want W=F, we can write

$ILB sin \theta=W$

And we can solve it to find the current I:

$I=\frac{W}{BLsin\theta}=\frac{735 N}{(38 T)(2.0 m)(sin 90^{\circ})}=9.67 A$

8 0

3 years ago

An iron nail is made up of particles. What is true about the particles?Why does ice float on water?

Archy [21]

Answer: i know that ice is denser than water because of the reason why ice is expanding:air. ice has tiny air packets inside that make it bigger than the original state(the state which a substance is at at room temperature.

Explanation:

Iron is an element that has been known in its pure form for at least 5,000 years. The name "iron" comes from the...

The element symbol for iron is Fe, which comes from the Latin word for iron, "ferrum."

Iron is one of the most plentiful elements. It comprises about 5.6 percent of the Earth's crust and almost all of its core

Iron is a transition metal.

Animals and plants require iron. Plants use iron in chlorophyll, the pigment used in photosynthesis. Humans use iron in hemoglobin molecules in blood to allow for the transport of oxygen to tissues throughout the body.

4 0

3 years ago

Which is not a process that has been proposed to explain the formation of precipitation?

marusya05 [52]

The answer should be : <span>the atmospheric subduction process.

Hope this helps !

Photon</span>

5 0

3 years ago