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satela [25.4K]
4 years ago
11

Count Rumford concluded that heat energy is produced by

Physics
1 answer:
topjm [15]4 years ago
5 0
Heat can be produced by the work done in tearing apart particles of brass
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Which of the following materials offer the least electrical resistance? Pure water, wood, salt water, glass
Vanyuwa [196]

Salt water offers the least electrical resistance.

<u>Explanation:</u>

Least electrical resistance indicates that any material which readily allows the electric current through itself, and shows more conductivity.

Here pure water doesn't contain any ions, so it is a bad conductor.

Wood and glass are also bad conductors of electricity.

Salt water contains ions, which conducts electricity which means it shows least electrical resistance.

5 0
4 years ago
A population has a birthrate of 10/1000 , a death rate of 9/1000, an immigration rate of 3/1000, and an emigration rate of 7/100
Charra [1.4K]

Birth rate 10/1000 = +population



Death rate 9/1000 = -population



Immigration rate 3/1000 = +population



Emigration rate 7/1000 = -population



10/1000 - 9/1000 + 3/1000 - 7/1000= -3/1000



Growth rate = (-3/1000)(100%)= -0.3%


3 0
4 years ago
HEY CAN YALL HELP ME IN DIS!!
Natasha_Volkova [10]

It might me same volume

5 0
4 years ago
A man-made satellite orbits the earth in a circular orbit that has a radius of 32000 km. The mass of the Earth is 5.97e 24 kg. W
Gwar [14]

Answer:

= 3521m/s

The tangential speed is approximately 3500 m/s.

Explanation:

F = m * v² ÷ r

Fg = (G * M * m) ÷ r²

(m v²) / r = (G * M * m) / r²

v² = (G * M) / r

v = √( G * M ÷ r)

G * M = 6.67 * 10⁻¹¹ * 5.97 * 10²⁴ = 3.98199 * 10¹⁴

r = 32000km = 32 * 10⁶ meters  

G * M / r = 3.98199 * 10¹⁴ ÷ 32 * 10⁶

v = √1.24 * 10⁷  

v = 3521.36m/s

The tangential speed is approximately 3500 m/s.

8 0
4 years ago
Read 2 more answers
How is aperture measured? What do the measurements mean?
gulaghasi [49]
Aperture is measured in F-stops, in which the f-stops is the amount of light allowed to pass through the aperture, which simply put means that the smaller the aperture, the higher the f-stops. What it does is reduce the amount of light that reaches the film, so the higher the f-stops, the less light reaches the film.
4 0
3 years ago
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