All categories

3 years ago

When triggers nuclear fusion in stars

1 answer:

5 0

Fusion in stars are usually the result of gravity. Once a mass of hydrogen accumulates enough mass, the gravity of all that mass compresses the core of the star to the point that the hydrogen atoms there begin fusing into helium. The <span>process then cascades outward, and the end result is a star. Hopes ths Helps. Also mark me brainliest since I was first

</span>

You might be interested in

Three magnets are placed on a plastic stick as shown in the image. Explain how the magnets need to be rearranged so that they st

dimaraw [331]

Answer:

The magnets need to be placed with red closest to blue.

Opposite poles attract.

The magnets will be attracted to each other with enough force to stick together.

Explanation:

6 0

3 years ago

Read 2 more answers

Two particles with charges of 2nC and 5nC are separated by a distance of 3m. The charge 2nC is placed on the left. Find the forc

Vanyuwa [196]

Answer:

$1\cdot 10^{-8} N$ to the left

Explanation:

The magnitude of the electrostatic force between two charges is given by the following equation:

$F=k\frac{q_1 q_2}{r^2}$

where:

$k=9\cdot 10^9 Nm^{-2}C^{-2}$ is the Coulomb's constant

$q_1, q_2$ are the magnitude of the two charges

r is the distance between the two charges

Moreover, the force is:

- Attractive if the charges have opposite sign

- Repulsive if the charges have same sign

In this problem, we have:

$q_1=2nC=2\cdot 10^{-9}C$ is the magnitude of charge 1

$q_2=5nC =5\cdot 10^{-9}C$ is the magnitude of charge 2

r = 3 m is the distance between the two charges

Substituting, we find the force on both charges:

$F=\frac{(9\cdot 10^9)(5\cdot 10^{-9})(2\cdot 10^{-9}}{3^2}=1\cdot 10^{-8} N$

Here, the two charges are both positive, so the force is repulsive; since the 2 nC charge is on the left, this means that the force on this charge is to the left (away from the 5 nC charge).

5 0

3 years ago

As the ambulance got closer, Marge noticed that the pitch of the siren got higher. This happened because

Neko [114]

Explanation :

As the ambulance got closer, Marge noticed that the pitch of the siren got higher. This is due to the Doppler's effect.

The siren of the ambulance has a higher pitch when it approaches Marge. When the waves move away from him, it will have a lower pitch.

As the waves come closer to us, the waves become compressed and hence the frequency of the wave increases.

5 0

3 years ago

Read 2 more answers

The sun will become surrounded by glowing clouds of gas-forming what is called a planetary ____________.

allsm [11]

Hi!

the answer is, The sun will become surrounded by glowing clouds of gas-forming what is called a planetary nebula.

hope this helped!!

jazzy xx

5 0

3 years ago

I will make u brainliest if ur right.

Sonja [21]

Properties to identify a mineral:

Color

Luster

Streak

Hardness

Cleavage

(There appears to be 8 things you need to fill in but I only know this much)

What will scratch Quartz:

Topaz

Corundum

Diamond

sorry I only knew a few of the answers, hope I still helped

6 0

3 years ago