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enot [183]
3 years ago
9

Why is the magic number of an atom 8?

SAT
1 answer:
Nezavi [6.7K]3 years ago
7 0
In nuclear physics, a magic number is a number of nucleons such that they are arranged into complete shells within the atomic nucleus.
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Define a constellation.​
Pachacha [2.7K]

Answer:

k

1 : the configuration of stars especially at one's birth. 2 : any of 88 arbitrary configurations of stars or an area of the celestial sphere covering one of these configurations the constellation Orion. 3 : an assemblage, collection, or group of usually related persons, qualities, or things …

8 0
3 years ago
A 0.1 kg block of brass is cooled until it releases 56.4 J of heat. If the temperature of the block was 5 K initially, what is i
Zolol [24]

Answer:

3.5 K

Explanation:

When a sample of a substance releases heat energy, its temperature decreases according to the equation:

Q=mC(T_f-T_i)

where

Q is the heat energy released

m is the mass of the substance

C is the specific heat capacity

T_i is the initial temperature

T_f is the final temperature

For the block of brass in this problem, we have:

m = 0.1 kg is the mass

Q = -56.4 J is the heat energy released (negative since it is released)

C = 380 J/kg K is the specific heat capacity of brass

T_i=5 K is the initial temperature

Solving for T_f, we find the final temperature:

T_f=T_i + \frac{Q}{mC}=5+\frac{-56.4}{(0.1)(380)}=3.5 K

5 0
3 years ago
Pqrs is a parallelogram and st=tr. what is the ratio of the area of a triangle qst to the area of the parallelogram
uranmaximum [27]
1:2 is the answer in all parallelograms!
8 0
3 years ago
Read 2 more answers
Which is an example of a cultural block?
Harman [31]
Answer: a. a gender bias
6 0
3 years ago
Which equation is an example of the commutative property of multiplication? (4 2i) = (2i 4) (4 2i)(3 – 5i) = (3 – 5i)(4 2i) (4 2
kozerog [31]

Option B is correct. (4 + 2i)(3 – 5i) = (3 – 5i)(4 + 2i) satisfies the commutative property of multiplication

Given two values A and B, according to the commutative property of multiplication;

  • AB = BA

This shows that the product of A and B stays the same no matter the arrangement.

From the given option, we can see that (4 + 2i)(3 – 5i) = (3 – 5i)(4 + 2i) satisfies the commutative property of multiplication where we can say;

A = 4 + 2i and B = 3 - 5i

Learn more here: brainly.com/question/17955280

4 0
2 years ago
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