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Sati [7]
3 years ago
7

What is the ultimate source of energy that makes the Sun shine?

Physics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

The sun's energy comes from thermonuclear fusion reactions.

Explanation:

Due to the Sun's strong gravitational pull, hydrogen atoms fuse, resulting in helium atoms. During this process, tremendous amounts of energy are released, or the energy of the Sun.

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Explaining How Light Bends in<br> Explain how light bends during diffraction
evablogger [386]

Answer:

Explanation: light waves against itself, which leads to internal interference of different wave component Which is also referred to as diffraction.

Diffraction causes beam of light to slowly spread out as it travels, so that some of the light will bend away from a straight line motion of the main part of the wave

3 0
4 years ago
Read 2 more answers
Which best describes a reference frame?
babymother [125]

By definition we have to:

A system or frame of reference are those conventions used by an observer (usually standing at a point on the ground) to be able to measure the position and other physical magnitudes such as speed and acceleration of one or several objects.

The numerical value of some magnitudes can also be relative to the reference system when we refer to the relative movement. There are always mathematical relationships between the observer and the relative magnitudes.

Answer:

C. a position from which something is observed

3 0
4 years ago
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The food calorie, equal to 4186 J, is a measure of how much energy is released when food is metabolized by the body. A certain b
rewona [7]

Answer:

The hiker has to climb 941.26 to ''work off'' the calories.

Explanation:

Let's first find out how much energy the hiker gets from 150 food calories.

This is:

Energy = 150 * 4186

Energy = 627.9 kJ

To burn all of this off, we set it equal to the gravitational potential energy, and then solve for the height.

This is:

Gravitational Potential Energy (G.P.E) = 629700

G.P.E = mass * gravity * height

Thus,

mass * gravity * height = 629700

68 * 9.81 * height = 629700

height = 941.26 meters

5 0
3 years ago
Question 1(Multiple Choice Worth 2 points)
tia_tia [17]

Answer:

D

Explanation:

the reason for each column is to show the electronic configuration of the elements in that column.

Hope This Helps  ▼・ᴥ・▼

3 0
3 years ago
If you are driving 90 km/hkm/h along a straight road and you look to the side for 2.2 ss , how far do you travel during this ina
ICE Princess25 [194]

Answer: 55m

Explanation:

Given the following :

Driving speed = 90km/hr

Inattentive period (time) = 2.2s

Distance during inattentive period =

(driving speed * time)

Converting driving speed from km/hr to m/s

1000m = 1km

3600s = 1hour

Therefore,

90km/hr = (90 * 1000) / 3600

90km/hr = (90000)/ 3600 = 25m/s

Therefore ;

Distance during inattentive period =

(driving speed * time)

Distance during inattentive period = (25m/s × 2.2s) = 55m

Distance traveled during inattentive period is 55m

6 0
3 years ago
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