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3 years ago

What are some possible sources of motion that could be harnessed for a generator?

Physics

1 answer:

OverLord2011 [107]3 years ago

5 0

Explanation:

There are multiple other sources of kinetic energy that can be harnessed for electricity. Wind-powered turbines can create energy through windmills or wind-power generators. Wind energy is harnessed into kinetic energy by turning panels that are designed and angled to catch as much wind as possible.

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Consider the addition of an electron to the following atoms from the third period. Rank the atoms in order from the most negativ

sergeinik [125]

The question is incomplete, the atoms in the third period referred to in the question are shown in the image attached.

Answer:

Cl>Si>Ar

Explanation:

Electron affinity refers to the energy released when an atom accepts electron (s) to form a negative ion. It is a periodic property that shows similar trends as electro negativity.

Considering the atoms in period three given in the question; chlorine will have the most negative value of electron affinity. This owes to the fact that halogens accept electrons easily to form negative ions. Silicon in group 14 shows much less negative value of electron affinity while argon, a noble gas, does not accept electrons at all and has an electron affinity of zero KJMol-1 by standard.

6 0

4 years ago

2 / 3

kiruha [24]

Answer:

Explanation:

3 0

3 years ago

A spaceship from a friendly, extragalactic planet flies toward Earth at 0.201 times the speed of light and shines a powerful las

bagirrra123 [75]

Answer:

The wavelength of observed light on earth is 568.5 nm

Explanation:

Given that,

Velocity of spaceship $v= 0.201c$

Wavelength of laser $\lambda= 697\ nm$

We need to calculate the wavelength of observed light on earth

Using formula of wavelength

$\lambda_{0}=\lambda_{e}\times\sqrt{\dfrac{1-\dfrac{v}{c}}{1+\dfrac{v}{c}}}$

$\lambda_{0}=697\times10^{-9}\times\sqrt{\dfrac{1-\dfrac{0.201 c}{c}}{1+\dfrac{0.201c}{c}}}$

$\lambda_{0}=697\times10^{-9}\times\sqrt{\dfrac{1-0.201}{1+0.201}}$

$\lambda=5.685\times10^{-7}\ m$

$\lambda=568.5\times10^{-9}\ m$

$\lambda=568.5\ nm$

Hence, The wavelength of observed light on earth is 568.5 nm

8 0

3 years ago

The element lead (Pb) has a density 11.3 times that of water. Copper (Cu) has a density 7.9 times the density of water. A 5 kg m

77julia77 [94]

Answer:

The answer is B

Explanation:

Density of the element lead (Pb) is:

$d_{Pb} =11,3kg/dm^3$

Density of the element Copper (Cu) is:

$d_{Cu} =7,9kg/dm^3$

First we need o find the volume of both materials:

$V_{Pb}=5/11,3=440cm^3$

$V_{Cu}=5/7,9=630cm^3$

And the buoyant forces on elements are:

$P_{Pb}=440*1*9,81/1000=4,32N$

$P_{Pb}=630*1*9,81/1000=6,18N$

8 0

3 years ago

What determines the color of an transperent object?

Katarina [22]

Answer:

The color of a transparent object is determined by the wavelength of the light transmitted by it. An opaque object that reflects all wavelengths appears white; one that absorbs all wavelengths appears black

5 0

3 years ago