Extremely large main sequence stars consume their fuel quickly and burn hot and bright. As they consume all their hydrogen, they become supergiants. Describe the changes that take place, in terms of luminosity and temperature, to these large main sequence stars as they exhaust their hydrogen supplies.

Answer:

the right answer is option 2

Answer:

D) 1 & 2

Explanation:

Ice melting can be refrozen and although the pencil breaks, it doesn't change the chemical formula of the pencil

Answer:

342,690

Explanation:

I think, given 342,690 snowmen down a giant hill, that sled could destroy every single snowman :)

Our solar system is the only place in the universe where gravity played a key part in the formation of planets.

This is Flase

Answer:

If I did my calculations correctly then the answer is 11 but I may be weong

Answer:

it's 11

gkccgkxcgikvxxkg

Answer:

1. Icy

This is so because the icy surface will be slippery due to ice and water residue on it. Not only the stone, anything that goes on the icy surface is likely to slip. There won't be much friction offered by the surface.

If we talk about the sandy surface, the stone won't go far and will be stopped at the nearest point possible and it's also possible that the stone will settle down in the surface.

The dry and cemented surfaces will cause friction when the stone will be thrown on them, which will stop the stone from going far away.

2. Streamline is the body shape which offers very little resistance to the flow of air.

3. Spring balance is a device used for measuring weight of an object object.

(or the force acting on an object)

Answer:

0.665

Explanation:

I did the work. Just plug everything in from the formula. Look at the lesson manual.

Answer:

sorry

Explanation:

Answer:

A and C are 180 deg out of phase (opposite points on a 360 deg wave)

The two points on the periodic wave  which are 180 degrees out of phase are point A and Point C.

The two points of a wave is said to be out of phase when they show up or down motion at different times.

If a point on the wave, say (X) is reached to the maximum or minimum point before the other point. Then these two points are said to be out of phase.

Also, when the points are 180 degree apart from each other. Which means if a point is in the crest of the wave and other is on the through.

The diagram below shows a periodic wave. In this diagram,

Hence, the two points on the periodic wave  which are 180 degrees out of phase are point A and Point C.

Learn more about the periodic wave here;

https://brainly.com/question/16749356

Answer:

1 + 3 = 7. X = 2 -9+7=8

Explanation:

Here,

Answer:

Explanation:

11.) d

12.) f

13.) c

15.) i

pls give me brainliest

Answer:

I believe the answer is D: Conductor.

Answer:

I = 1.36 x 10⁻⁴ W/m²

Explanation:

The intensity of the sound produced by the Elephant can be calculated by using the following formula:

[tex]I = \frac{P}{A} \\\\[/tex]

where,

I = Intensity of sound = ?

P = power of sound = 0.45 W

A = area = πr² = π(32.5 m)² = 3318.3 m²

Therefore,

[tex]I = \frac{0.45\ W}{3318.3\ m^2} \\\\[/tex]

I = 1.36 x 10⁻⁴ W/m²

Explanation:

the correct answer is (true) if am not mistaking incase am wrong sorry

Answer:

Explanation:

Here, we are asked to calculate the average speed in km/minute.

As we know that,

Here,

→ Total distance = 10 km + 10 km

→ Total distance = 20 km

→ Total time = 8 minutes + 2 minutes

→ Total time = 10 minutes

Substitute the values in the formula of average speed,

→ Average speed = Total distance ÷ Total time taken

→ Average speed = 20km ÷ 10 minutes

Answer:

Ține ogaru ca să o lingă pe măta în cur să nu mai facă alt prost ca tine

What process is represented by this redox equation ?

6H 2 O+6CO 2 C 6 H 12 O 6 +6O 2

This equation is of the process of photosynthesis. The proper equation is :-

6CO2+6H2O→C6H12O6+6O2.

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The current sensitivity of a galvanometer depends upon the following factors :-

___________

Hope it helps.

RainbowSalt2222

Answer:

it has 3 electrons. brainliest please

Answer:

...............

Explanation:

If an object is placed in front of a plane mirror, the size of the object remains same. This is the property of plane mirror. So the height of the object will be 10cm only.

The image position in the plane mirror is 5 cm.

The ratio of the height of the formed image to the height of the object is used to define the magnification created by the mirror.

Here,

Position of the object, u = -10 cm

Height of the object, h = 10 cm

We know that magnification produced by a plane mirror is 1.

So,

Magnification, m = -v/u

1 = -v/u

Therefore, image distance,

v = -u

v = 5 cm

Hence,

The image position in the plane mirror is 5 cm.

To learn more about magnification, click:

https://brainly.com/question/12966853

#SPJ2

Answer:

Let No be initial no of atoms

N = N0 / 2      after 1 half-life

N = N0 / 4     after 2 half-lives

So after 2 half-lives 20 of the 80 atoms remain

Answer:

The collision is inelastic

Explanation:

There are two kinds of collision; elastic collision and inelastic collision. In an elastic collision, both momentum and kinetic energy are conserved.

However, in an inelastic collision, kinetic energy is not conserved. So, when the bumper of two cars collide, the cars come to a stop because the collision is inelastic.

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Actually Welcome to the concept of Net force on a body.

We know that net force on a body is the force that is calculated from all direction and added , if there is any force remained at last, then the forces are unbalanced,

and if the net force on a body is Zero, then it is a balanced force,

here,

Force to left on skier = 50 N

Force to right on skier = 40 N

hence the net force = left force - right force

Net force = 50 - 40 ==> 10 N

hence the Net force is 10 N in the left direction of the skier.

Answer:

RT = 54 Ohms

Explanation:

Given the following data;

Resistance = 18 Ohms

Voltage = 12 Volts

To find the equivalent resistance (RT) of the circuit;

For a series connection, the formula is;

RT = R1 + R2 + R3

RT = 18 + 18 + 18

RT = 54 Ohms

Or

RT = 3*R

RT = 3 * 18

RT = 54 Ohms

Answer:

Thermal energy can be transferred to one object to another in the form of heat. It causes molecules and atoms to collide with each other because of the rising of heat.

Explanation: Well thermal energy is a example of kinetic energy. It is heated by motion. It is heat that can be measured

the position that has least kinetic energy is option D

Answer:

W = 0 J

Explanation:

The amount of work done by gas at constant pressure is given by the following formula:

[tex]W = P\Delta V[/tex]

where,

W = Work done by the gas

P = Pressure of the gas

ΔV = Change in the volume of the gas

Since the volume of the gas is constant. Therefore, there is no change in the volume of the gas:

[tex]W = P(0\ m^3)\\[/tex]

W = 0 J