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Nana76 [90]
3 years ago
14

Is a lump of coal chemical energy

Physics
1 answer:
AVprozaik [17]3 years ago
5 0

Answer:

well, not unless the coal is reacting with something. if it's just sitting there, then it can't power anything.

Explanation:

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Physics help please..............
adoni [48]

Answer:

3.68 m/s

Explanation:

Full answer in the attached picture

7 0
3 years ago
What is the main function of the spongy bone'
storchak [24]
Oooooo there's a spongy bone? that's cool! Lol okay okay, I will research it and help you out. 

Here's what I found:

Cancellous bone<span>, also known as </span>spongy<span> or </span>trabecular bone<span>, is one of the </span>two<span> types of </span>bone<span> tissue found in the human body. ... It is very porous and contains red </span>bone<span>marrow, where blood cells are made.</span>
7 0
3 years ago
Read 2 more answers
You have a tungsten sphere (emissivity ε = 0.35) of radius 25 cm at a temperature of 25°C. If the sphere is enclosed in a room w
egoroff_w [7]

Answer:

Explanation:

Stefan's formula for emission of radiation is

E = e σ A  ( T⁴ - T₀⁴ )

E is energy radiated , e is emissivity , σ is stefan's constant , T is temperature of object and T₀ is temperature of surrounding. A is area of surface .

E = .35 x 5.67 x 10⁻⁸ ( 298⁴ - 268⁴ ) x 4π x .25²

= 1.9845 x 10⁻⁸ ( 78.86 - 51.58 ) x 10⁸ x .0625

= 3.38  J /s

8 0
2 years ago
A 6.8 KG object moves with a velocity of 8 M/S what’s it's kinetic energy?
FromTheMoon [43]

Answer:

Explanation:

KE = ½mv² = ½(6.8)8² = 217.6 J

round as appropriate because that result is way too much precision for the inputs provided. Arguably should be 200 J based on the single significant digit of the velocity.

8 0
2 years ago
The bones of the middle ear cause the to vibrate and change the sound into signals.
olga nikolaevna [1]
If it is a true or false question then it is true
8 0
3 years ago
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