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g100num [7]
3 years ago
12

1. Which two elements are mainly found in the inner and outer core?

Chemistry
1 answer:
romanna [79]3 years ago
8 0
Because it takes a lot of work to make a core solid
You might be interested in
Part A
Roman55 [17]

These are two questions and two answers

Question 1.

Answer:

  • <u>7.33 × 10 ⁻³ c</u>

Explanation:

<u>1) Data:</u>

a) m = 9.11 × 10⁻³¹ kg

b) λ =  3.31 × 10⁻¹⁰ m

c) c = 3.00 10⁸ m/s

d) s = ?

<u>2) Formula:</u>

The wavelength (λ), the speed (s), and the mass (m) of the particles are reltated by the Einstein-Planck's equation:

  • λ = h / (m.s)

  • h is Planck's constant: h= 6.626×10⁻³⁴J.s

<u>3) Solution:</u>

Solve for s:

  • s = h / (m.λ)

Substitute:

  • s = 6.626×10⁻³⁴J.s / ( 9.11 × 10⁻³¹ kg ×  3.31 × 10⁻¹⁰ m) = 2.20 × 10 ⁶ m/s

To express the speed relative to the speed of light, divide by c =  3.00 10⁸ m/s

  • s =  2.20 × 10 ⁶ m/s / 3.00 10⁸ m/s = 7.33 × 10 ⁻³

Answer: s = 7.33 × 10 ⁻³ c

Question 2.

Answer:

  • 2.06 × 10 ⁻³⁴ m.

Explanation:

<u>1) Data:</u>

a) m = 45.9 g (0.0459 kg)

b) s = 70.0 m/s

b) λ =  ?

<u>2) Formula:</u>

Macroscopic matter follows the same Einstein-Planck's equation, but the wavelength is so small that cannot be detected:

  • λ = h / (m.s)

  • h is Planck's constant: h= 6.626×10⁻³⁴J.s

<u>3) Solution:</u>

  • λ = h / (m.s)

Substitute:

  • λ =  6.626×10⁻³⁴J.s / ( 0.0459 kg ×  70.0 m/s) = 2.06 × 10 ⁻³⁴ m

As you see, that is tiny number and explains why the wave nature of the golf ball is undetectable.

Answer: 2.06 × 10 ⁻³⁴ m.  

5 0
3 years ago
Which of the following variables has the least effect on the rate a substance dissolved in a container of water?
Lelechka [254]
I think it’s A. The force of the stirring
4 0
3 years ago
Classify each orbital diagram for ground-state electron configurations by the rule or principle it violates.
nignag [31]
Thank you for posting your question here at brainly. I hope the answer will help. Please see below:

Aufbau violation:
4s ↑↓ 3d ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 5s ↑
<span>3s ↑ 3p ↑ ↑ ↑ </span>
<span>Hund violation: </span>
<span>4s ↑↓ 3d ↑↓ ↑ ↓ ↑ ↑ </span>
3s ↑↓ 3p ↑↓ ↑↓
Pauli violation
<span>2s ↑↑ 2p ↑ ↑ ↑</span>
6 0
4 years ago
6. How many sections are there to an SDS for a given chemical? *
Ad libitum [116K]
The answer would be 16
4 0
3 years ago
How much heat is required, in calories, to raise the temperature of 57.8 grams of silver from 17.0 C to 43.5 C, if the specific
BigorU [14]

Answer:

Q = 87.31cal

Explanation:

Mass = 57.8g

T1 = 17.0°C

T2 = 43.5°C

Specific heat capacity (c) = 0.057cal/g°C

Q = MC∇T

Q = M*C*(T₂ - T₁)

Q = 57.8 * 0.057 * (43.5 - 17.0)

Q = 3.2946 * 26.5

Q = 87.306 cal

Q = 87.31cal

3 0
4 years ago
Read 2 more answers
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