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lara [203]
3 years ago
8

How can volcanic eruptions contribute to global climate change?

Physics
2 answers:
Gennadij [26K]3 years ago
7 0

In 1784, Benjamin Franklin made what may have been the first connection between volcanoes and global climate while stationed in Paris as the first diplomatic representative of the United States of America. He observed that during the summer of 1783, the climate was abnormally cold, both in Europe and back in the U.S. The ground froze early, the first snow stayed on the ground without melting, the winter was more severe than usual, and there seemed to be "a constant fog over all Europe, and [a] great part of North America."

I HOPE THAR HELPS IF NOT IM SORRY:(

Olegator [25]3 years ago
4 0

Answer:

How can volcanic eruptions cause the climate to become cooler?

A. Volcanic aerosols neutralize the effect of greenhouse gases.

B.Volcanic ash and dust become condensation nuclei for precipitation.

C. Volcanoes release carbon dioxide, a greenhouse gas that acts to cool the climate.

<u><em> D. Volcanic ash, dust, and aerosols increase the solar radiation reflected into space.</em></u>

Explanation:

The Answer is <u><em>D. Volcanic ash, dust, and aerosols increase the solar radiation reflected into space.</em></u>

The atmosphere always reflects a fraction of solar radiation into space and transmits the remainder to the surface. Ash, dust, and aerosols (very fine particles) from volcanoes can increase the reflected radiation.

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Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50 meters above the surface
mina [271]
We have:

Total Energy: KE + GPE
KE (Kinetic Energy) = \frac{1}{2} m*v^2
GPE (Gravitational Potential Energy) = m*g*h

Data:
m (mass) = 2.0 Kg
v (speed) = 10 m/s
h (height) = 50 m
Use: g (gravity) = 10 m/s²

Formula:

Total Energy: KE + GPE
TE =  \frac{1}{2} m*v^2 + m*g*h

Solving:
TE = \frac{1}{2} m*v^2 + m*g*h
TE = \frac{1}{2} *2.0*10^2 + 2.0*10*50
TE =  \frac{2.0*100}{2} + 1000
TE =  \frac{200}{2} + 1000
TE = 100 + 1000
\boxed{\boxed{TE = 1100\:Joule}}\end{array}}\qquad\quad\checkmark


5 0
3 years ago
Read 2 more answers
An initially uncharged 3.47-μF capacitor and a 6.43-kΩ resistor are connected in series to a 1.50-V battery that has negligible
harkovskaia [24]

Answer: a) io=233.28 A ( initial current); b) τ=R*C= 22.31 ms; c) 81.7 ms

Explanation:  In order to explain this problem we have to use, the formule for the variation of the current in a RC circuit:

I(t)=io*Exp(-t/τ)

and also we consider that io=V/R=(1.5/6.43*10^3)

=233.28 A

then the time constant for the RC circuit is τ=R*C=6.43*10^3*3.47*10^-6

=22.31 ms

Finally the time to reduce the current to 2.57% of its initial value is obtained from:

I(t)=io*Exp(-t/τ)  for I(t)/io=0.0257=Exp(-t/τ) then

ln(0.0257)*τ =-t

t=-ln(0.0257)*τ=81.68 ms

3 0
3 years ago
20. There are two electrical devices, one is electrical kettle of 2KW-200V and
RUDIKE [14]

Electrical kettle:  

P = 2 KW = 2000 W

U = 200 V

⇒  I = P/U = 2000 / 200 = 10 A

We apply the Law of Ohm:

R = U / I = 200V / 10A = <u>20 Ω</u>

=======

Electrical heater:

P = 1 KW = 1000 W

U = 240 V

⇒  I = P/U = 1000 / 240 = 4,16 A

We apply the Law of Ohm:

R = U / I = 240V / 4,16A = <u>57,69 Ω</u>

<u>Answer:</u>

The device with the highest resistance is <u>the electric heater.</u>

<u></u>

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<u></u>

6 0
4 years ago
What simple machines combine to make a shovel which is a compound
IRINA_888 [86]
B) lever and pulley is the answer
6 0
3 years ago
1. A body has a velocity of 72 km/hr. Find its value in m/s.
CaHeK987 [17]

72 Km/hr

= 72000 m/ 60×60 s

= 72000 m/ 3600 s

= 20 m/s

Answer is 20 m/s.

Hope it helps! Please do comment

8 0
3 years ago
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