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Alexxx [7]
3 years ago
6

Solar energy technology is expensive, but it has been improving in efficiency over the years. Today, many small appliances, such

as calculators, watches, and patio lights, are powered with solar panels. How does this increased use of solar energy affect the availability of solar energy?
Physics
1 answer:
zvonat [6]3 years ago
5 0
Solar energy is kind of like a natural waterfall.

The amount of water you catch in your bucket at the bottom of the falls
has no affect whatsoever on how much pours over the falls.

It doesn't matter how much solar energy we use ... to run our calculators
and patio lights, or to run every car and industrial manufacturing plant
in the world ... it has no effect whatsoever on the amount of solar energy
reaching Earth from the sun and available to us.

IN FACT . . . if we ever reach the point of using humongous amounts of
solar energy, that may make solar energy a little bit MORE available to us.
It'll mean that we're using less coal, oil, and gas, belching less pollution
into the atmosphere, making the air a little more clear and transparent,
so a little MORE solar energy reaches the ground where we can collect it. 
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Answer:

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7 0
1 year ago
When a piece of metal mass of 72.17 g is
nordsb [41]

Answer:

Explanation:

The trick is in finding the volume.

Final Volume = 26.64

Initial Volume=<u>20.92</u>                   Subtract

Metal Volume  5.72  cm^3

Density = mass / volume

Density = 72.17 / 5.72

Density = 12.617

7 0
3 years ago
In a particle accelerator, a magnetic force keeps a lithium nucleus (mass 6.02 u) traveling in a circular path with a radius of
klasskru [66]

Answer:

The value  is   F_B  = 1.074 *10^{-11} \  N

Explanation:

From the question we are told that

   The mass of the  lithium nucleus  is  m =  6.02 \  u = 6.02 * 1.66*10^{-27} =  9.9932*10^{-27}\ kg

    The radius is  r =  0.536 \ m

    The speed of the lithium nucleus is v  = 0.08 c = 0.08 * 3.0*10^{8} = 2.40*10^{7} \  m/s

   Given that the lithium nucleus is travelling in a circular path, the magnetic force will be equivalent to a centripetal force so

       F_B  =  F_C

And  F_C[tex] is centripetal  force mathematically represented as          [tex]F_C = \frac{m *  v^2}{r}

So

        F_B = F_C = \frac{m *  v^2}{r}

=>    F_B = F_C = \frac{9.9932*10^{-27} * [2.40*10^{7}]^2}{ 0.536}

=>   F_B  = 1.074 *10^{-11} \  N

6 0
4 years ago
2 Why don't all communication devices function off the same wavelength?
Nostrana [21]

Wavelength is the distance between identical points in the adjacent cycles of a waveform signal propagated in space or along a wire. In wireless systems, this length is usually specified in meters, centimeters, or millimeters.

Wavelengths are an important factor in Wi-Fi networks. Wi-Fi operates at five frequencies, all in the gigahertz range: 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz and 5.9 GHz. Higher frequencies have shorter wavelengths, and signals with shorter wavelengths have more trouble penetrating obstacles like walls and floors.

As a result, wireless access points that operate at higher frequencies with shorter wavelengths, often consume more power to transmit data at similar speeds and distances achieved by devices that operate at lower frequencies, with longer wavelengths.

7 0
4 years ago
Levi and Clara are trying to move a very heavy box. Levi is pushing the box with a force of 30 N, and Clara is pulling the box w
musickatia [10]
The net force on the box is:
50 + 30 - 65
= 15 Newtons
This can be used in conjunction with
F = ma
to calculate the acceleration of the box if its mass is known.
3 0
4 years ago
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