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2 years ago

Which of the following energy resources produces greenhouse gases?

1 answer:

4 0

Coal is burned to get energy. By burning coal, green houses gases like carbon dioxide, nitrogen oxides and suphur oxides are produced.

Rest of the energy sources given in the option are clean energies.

Answer is A.

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The circumference of the Earth is approximately 40,000 km. The Earth has a magnetic field that protects it from solar particle r

olasank [31]

Answer:

All are correct except the age of earth. The age of Earth is approximately 4.543 Billion Years.

6 0

2 years ago

Find the volume of a rectangular prism that is 8m long, 4m wide, and 300cm high

konstantin123 [22]

L=8m
B=4m
H=300cm=3m

$\\ \bull\tt\longmapsto Volume=LBH$

$\\ \bull\tt\longmapsto Volume=8(4)(3)$

$\\ \bull\tt\longmapsto Volume=96m^3$

6 0

2 years ago

Read 2 more answers

Two astronauts of mass 100 kg are 2 m apart in outer space. What is the

fredd [130]

The force of gravity between the astronauts is $1.67\cdot 10^{-7}N$

Explanation:

The magnitude of the gravitational force between two objects is given by:

$F=G\frac{m_1 m_2}{r^2}$

where :

$G=6.67\cdot 10^{-11} m^3 kg^{-1}s^{-2}$ is the gravitational constant

$m_1, m_2$ are the masses of the two objects

r is the separation between them

In this problem, we have two astronauts, whose masses are:

$m_1 = 100 kg\\m_2 = 100 kg$

While the separation between the astronauts is

r = 2 m

Substituting into the equation, we can find the gravitational force between the two astronauts:

$F=\frac{(6.67\cdot 10^{-11})(100)(100)}{2^2}=1.67\cdot 10^{-7}N$

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

#LearnwithBrainly

4 0

3 years ago

Read 2 more answers

. A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base jun

Elodia [21]

Explanation :

A power amplifier is used to amplify electric signals i.e. to increase the low power signal to higher powers.

A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junction is forward biased.

This transistor can be used as a power amplifier because it gives a much larger output current. The gain of an amplifier shows the amount of amplification. It is the difference between the input and the output signals.

6 0

3 years ago

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Two cars, initially 100 m distant apart, start moving towards each other

choli [55]

Answer: false

Explanation: because if one car is at 2 m/s and the other at 1 m/s one would be farther away from the stating point

6 0

2 years ago