Explain why solar energy is considered an inexhaustible source of energy

Answers

Answer 1

Answer:
-- The amount of energy radiated by the sun is not affected at all by how much
of it we use or don't use.

-- The sun is not expected to quit shining on us, or to change its rate of energy
output, at any time within the next several many human lifetimes.

Solar energy is going to keep arriving here, continuously, at the same rate,
free of charge, for a long long time, whether we feel like using it or not. It's
the closest thing to manna from heaven that has been seen around here for
thousands of years.

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Which example best shows how taxonomy can help us understand the evolutionary relationships among species?A-Physical comparisons of species can show how two organisms are related. B-Phylogenetic trees show evolutionary relationships among organisms. C-Different species are grouped together. D-Binomial nomenclature can show the most recent ancestor of two species.
Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.b. Explain why the two recordings would sound different after being replayed 100 times.
A ray at which angle would produce the most glare? A. 25 degrees B. 59 degrees C. 37 degrees D. 70 degrees
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50.0 meters away from a building. Tip of the building makes an angle of 63.0° with the horizontal. What is the height of the building

Answers

Answer:

98.13m

Explanation:

Complete question

Daniel is 50.0 meters away from a building. Tip of the building makes an angle of 63.0° with the horizontal. What is the height of the building

CHECK THE ATTACHMENT

From the figure, using trigonometry

Tan(θ ) = opposite/adjacent

Where Angle (θ )= 63°

Opposite= X = height of the building

Adjacent= 50 m

Then substitute the values we have

Tan(63)= X/50

1.9626= X/50

X= 1.9626 × 50

X= 98.13m

Hence, the height of the building is 98.13m

Calculate the mass of a gas with a density of 0.0065 g/cm3 and volume of 260 cm3.

Answers

Well mass=density times volume so .0065x260= 1.69

So your answer is 1.69 :)

When two or more forces act together on an object what do they combine to form

Answers

Without knowing anything about their magnitudes or directions, the only thing you can always say about thier combination is that it's the "net force" on the object.

an object is attached to a vertical ideal massless spring and bobs up and down between the two extreme points a and b. when the kinetic energy of the object is a minimum, the object is located

Answers

The correct answer for the question that is being presented above is this one: "A) at either A or B. "
Here are the following choices:
A) at either A or B.
B) midway between A and B.
C) 1/3 of the distance from A to B.
D) 1/4 of the distance from A to B.
E) 1/ times the distance from A to B.

Final answer:

The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.

Explanation:

In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.

At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.

This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.

Learn more about Kinetic Energy here:

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A basic observation of a star is how bright it appears. This brightness is known as the star'sA. luminosity.
B. absent magnitude.
C. apparent magnitude.
D. absolute magnitude.

Answers

The luminosity is how bright an celestial body is.

In nuclear physics, what units are used to measure the radius of an atom? A. liters B. mililiters C. fermi D. grams?

Answers

It's quite easy to get the answer. Think about it: liters and mililiters both are measure of volume - withdraw, grams are used to measure mass.
The one remained is C. fermi( femtometer) which is obviously correct answer.

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If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time? A. 38 Hz and 63 Hz B. 22 Hz and 42 Hz C. 47 Hz and 55 Hz D. 18 Hz and 26 Hz

At what speed do electromagnetic waves travel?