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3 years ago

A very slow motion of earth's axis that requires 26,000 years to complete is called ________.

1 answer:

5 0

The answer is axial precession. Axial precession refers to the very slow motion of the Earth’s axis, which almost requires twenty-six thousand (26,000) years to complete a full rotation. This Axial Precession is caused by the effects of gravitational pull from the Sun and the Moon towards the Earth.

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The position x of a particle moving along x axis varies with time t as x = Asin(wt) , where A and w are constants . The accelera

Elodia [21]

Let's see

$\\ \rm\Rrightarrow x=Asin(\omega t)\dots(1)$

Now we know the formula of acceleration

$\\ \rm\Rrightarrow \alpha=-A\omega^2sin(\omega t)$

$\\ \rm\Rrightarrow \alpha=-Asin(\omega t)\times \omega^2$

From eq(1)

$\\ \rm\Rrightarrow \alpha=-x\omega^2$

$\\ \rm\Rrightarrow \alpha=-\omega^2x$

6 0

2 years ago

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Electrons are emitted from a surface when light of wavelength 500 nm is shone on the surface but electrons are not emitted for l

liberstina [14]

Explanation:

Given: $\lambda = 500\:\text{nm} = 5×10^{-7}\:\text{m}$

$\nu = \dfrac{c}{\lambda} = \dfrac{3×10^8\:\text{m/s}}{5×10^{-7}\:\text{m}}$

$\:\:\:\:\:= 6×10^{14}\:\text{Hz}$

The work function $\phi$ is then

$\phi = h\nu = (6.626×10^{-34}\:\text{J-s})(6×10^{14}\:\text{Hz})$

$\:\:\:\:\:\:\:= 3.98×10^{-19}\:\text{J}$

3 0

3 years ago

Pls answerrrrr thisssss

Jobisdone [24]

The amplitude of wave-c is 1 meter.

The speed of all of the waves is (12meters/2sec)= 6 m/s.

The period of wave-a is 1/2 second.

4 0

3 years ago

What change takes place in a wave when the frequency of the wave increases?

Musya8 [376]

The answer is C. As the frequency of the waves increases, a greater number of wavelengths pass a given point per second. From the wave formula, we see that there is an indirect relationship between frequency and the wavelength. thus, as the frequency increases the wavelength decreases resulting to a smaller distance between the waves which will show greater number of wavelengths between waves.

4 0

3 years ago

Gas stored in a tank at 273 k has a pressure of 388kpa. The safe limit for the pressure is 825kpa at whst temperature Will gas r

vagabundo [1.1K]

Answer:

The answer to your question is T2 = 580.5 °K

Explanation:

Data

Temperature 1 = T1 = 273°K

Pressure 1 = P1 = 388 kPa

Pressure 2 = P2 = 825 kPa

Temperature 2 = ?

Process

1.- Use the Gay-Lussac law

P1/T1 = P2/T2

-Solve for T2

T2 = P2T1/P1

-Substitution

T2 = (825)(273) / 388

-Simplification

T2 = 225225 / 388

-Result

T2 = 580.5 °K

6 0

4 years ago