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Ilia_Sergeevich [38]
3 years ago
14

How is item A different from Item B?

Physics
2 answers:
iris [78.8K]3 years ago
8 0

Explanation:

well there is nothing there and it could be different by diffrent objects, idk

Rudik [331]3 years ago
4 0

Answer:

I have deduced that the answer is C) "The crust in Item A is found partially below sea level as compared to the crust in Item B."

Explanation:

This is because the crust in picture A has its crust slightly underneath sea level compared to picture B. I'd get more in-depth, but, I'm a bit too lazy. I believe this is to be learnt about in the future anyhow.(I believe)

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PLEASE HELP!!
Klio2033 [76]

Answer:

28.15

Explanation:

the ateps is in the photo

6 0
3 years ago
How much energy is required to heat 70 g of water at 20°C to boiling
choli [55]

Answer:

Q=23,430J

Explanation:

Hello,

In this case, since we compute the required energy via:

Q=mC\Delta T

Whereas m is the mass which here is 70 g, C the specific heat which for water is 4.184 J/(g°C) and ΔT is the temperature difference which is:

\Delta T=100-20=80\°C

Therefore, the energy turns out:

Q=70g*4.184\frac{J}{g\°C}*80\°C\\ \\Q=23,430J

Best regards.

3 0
3 years ago
Which type of solar heating uses mechanical means?
kakasveta [241]

Answer:

I want to say your answer is D) Electric

5 0
3 years ago
For a 99 kg person standing at the equator, what is the magnitude of the angular momentum about Earth's center due to Earth's ro
Fofino [41]

Answer:

L = 4.58 x 10⁴ kg.m²/s

Explanation:

The angular momentum is given by the formula:

L = mvr

but, v = rω

Therefore,

L = mr²ω

where,

L = Angular Momentum of the person = ?

m = mass of person = 99 kg

r = radius of earth = 6.37 x 10⁶ m

ω = Angular Speed of Earth's Rotation = θ/t

Since, earth completes 1 rotation in 1 day. Hence,

ω = (2π rad/1 day)(1 day/24 h)(1 h/3600 s)

ω =  7.27 x 10⁻⁵ rad/s

Therefore,

L = (99 kg)(6.37 x 10⁶ m)²(7.27 x 10⁻⁵ rad/s)

<u>L = 4.58 x 10⁴ kg.m²/s</u>

6 0
3 years ago
The speed of sound in wood is ____ the speed of sound in water. Question 23 options: less than greater than the same as depends
AURORKA [14]

Answer:

Less than

Explanation:

Speed of sound increases with density of the medium.  Since wood is less dense than water, the speed of sound is lower in wood.

7 0
3 years ago
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