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pav-90 [236]
3 years ago
6

What are things made by nature that are used by people?

Physics
2 answers:
icang [17]3 years ago
6 0
Wood, stone, iron, copper, steel, wildlife, and Us.
aleksandrvk [35]3 years ago
3 0
Wood is made by nature, and grown as trees!
We as humans cut them down, build some pretty cool things with them, and plant new trees!

Hope this helps! :)
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How much heat is absorbed by 60 g of copper when it is heated from 20°C to 80°C?
ira [324]

Answer:

1,836J

Explanation:

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4 years ago
A particle is leaving the Moon in a direction that is radially outward from both the Moon and Earth.
Misha Larkins [42]

Answer:

2780m/s

Explanation:

Essentially, Kinetic energy of the particle must equal the combined potential energies of earth and the moon when the object is on the moon's surface, meaning the full equation is

<h3>\frac{1}{2} mv^2=\frac{G(M_E)m}{r_E} +G\frac{M_mm}{r_m}\\</h3><h3 />

M_E=Mass of Earth=5.97*10^2^4

M_m=Mass of Moon=7.4*10^2^2kg

r_E=distance from earth's center to the moon's=3.84*10^8m

r_m=radius of moon=1.738*10^6m

After some algebra, the equation simplifies to

v=\sqrt{2G*(\frac{M_E}{r_E+r_m}+\frac{M_m}{r_m})}

Plugging in the values of G, which is 6.67*10^-^1^1 \frac{m^3}{kg*s^2}, should yield the proper answer of 2780m/s.

4 0
3 years ago
When landing after a spectacular somersault, a 40.5 kg gymnast decelerates by pushing straight down on the mat. Calculate the fo
monitta

Answer:

F= = 3.18 * 10^3 N

Explanation:

information given:

m= 40.5 kg

a= seven times gravity so we have

a= 7 g

where

gravity = g  =9.8 m/s2

F= m*a

F= (40.5) * 7g

a = 7 g = (7) (9.8) = 68.6 m/s2

There are two forces acts on gymnsat

Where ,w is the weight of Gymnsat

F(net) = F - mg

F- mg = ma

F = mg+ma

so  

F=  m ( g + a)

F = (40.5) [9.8+ 68.6 ]

F = 3.18 * 10^3 N

4 0
4 years ago
Which type of device enables its users to see around corners? laser telescope microscope fiber optics
Doss [256]

Answer:

D. Fiber Optics

Explanation:

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4 years ago
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Which of these indicates that a liquid has transferred thermal energy to the air?
Step2247 [10]

The liquid decreases in temperature, and its particles lose kinetic energy.

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3 years ago
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