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zmey [24]
4 years ago
12

How many electrons are in the third energy level

Physics
1 answer:
Masteriza [31]4 years ago
5 0

Answer:

This should hold about 18

Explanation:

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1. How much heat energy ( Q ) is required to heat 2.0 kg of copper from 30.0 oC to 80.0 oC?
djverab [1.8K]

Answer:

Heat capacity, Q = 38500 Joules

Explanation:

Given the following data;

Mass = 2 kg

Initial temperature, T1 = 30°C

Final temperature, T2 = 80°C

Specific heat capacity of copper = 385 J/Kg°C

To find the quantity of heat required;

Mathematically, heat capacity is given by the formula;

Q = mcdt

Where;

Q represents the heat capacity or quantity of heat.

M represents the mass of an object.

C represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 80 - 30

dt = 50°C

Substituting the values into the formula, we have;

Q = 2 * 385*50

Heat capacity, Q = 38500 Joules

4 0
3 years ago
Help ASAP plssssssssss
garik1379 [7]
C. 32400 because 540 * 60 = 32400
5 0
3 years ago
Which of the following best describes each particle?
Nana76 [90]

Answer:

C. Protons are positive, neutrons are neutral, and electrons are negative

4 0
3 years ago
A long, rigid conductor, lying along an x axis, carries a current of 5.0 A in the negative x direction. A magnetic field B: is p
DerKrebs [107]

Answer:

Explanation:

magnetic field B = (3 i + 8 x 2 j )x 10⁻³ T

= (3 i + 16 j )x 10⁻³ T

L = - i ( unit length of conductor )

Force F = I ( L x B ) , I is current

= 5 [ - i x ( 3i + 16 j ) 10⁻³]

= 5 ( - 16 k ) x 10⁻³

F = - 80 x 10⁻³ k

4 0
3 years ago
The average human hair has a diameter of 100,000 nm. We can see individual hairs because hair has a diameter greater than the wa
sertanlavr [38]

B is the correct answer, since all others are not true or are based on assumption

6 0
3 years ago
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