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2 years ago

Hellowhat is zenith define it ?

Physics

1 answer:

sertanlavr [38]2 years ago

4 0

Answer:

hi,

When one stands at a particular place, the point in the sky directly above the head is called Zenith.

Explanation:

hope it helps(≡^∇^≡)

good day

thank u ✅

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Why does the Moon appear red during a lunar eclipse?

dem82 [27]

Answer:

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A lunar eclipse takes place when the sun, Earth and moon line up in space. The moon passes through Earth's shadow. ... Bottom line: The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere

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2 years ago

Explain Quantum physics in a summarised, simple way. Thanks!

Nimfa-mama [501]

Answer:

Quantum mechanics was one of the two great revolutions in modern physics. The first, or Einstein's relativity, was in fact the pinnacle of classical physics. But quantum mechanics and related theories completely changed the world of science and philosophy, and it was the end of classical physics.

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In this post, I have tried to make this theory more accessible to all interested loved ones by stating the quantum theory and its consequences for the public.

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2 years ago

Will the electric field strength between two parallel conducting plates exceed the breakdown strength for air ( 3.0×106V/m ) if

xxMikexx [17]

(a) The electric field strength between two parallel conducting plates does not exceed the breakdown strength for air ( $3 \times 10^{6} V / m$ )

(b) The plates can be close together to 1.7 mm with this applied voltage

<u>Explanation:</u>

Given data:

Dielectric strength of air = $3 \times 10^{6} V / m$

Distance between the plates = 2.00 mm = $2.00 \times 10^{-3} \mathrm{m}$

Potential difference, V = $5.0 \times 10^{3} V$

We need to find

a) whether the electric field strength between two parallel conducting plates exceed the breakdown strength for air or not

b) the minimum distance at which the plates can be close together with this applied voltage.

The voltage difference (V) between two points would be equal to the product of electric field (E) and distance separation (d). The equation form is and apply all given value,

$E=\frac{V}{d}=\frac{5.0 \times 10^{3}}{2.00 \times 10^{-3}}=2.5 \times 10^{6} \mathrm{V} / \mathrm{m}$

From the above, concluding that The electric field strength between two parallel conducting plates ( $2.5 \times 10^{6} \mathrm{V} / \mathrm{m}$ ) does not exceed the breakdown strength for air ( $3 \times 10^{6} V / m$ )

b) To find how close together can the plates be with this applied voltage:

The formula would be,

$d_{\min }=\frac{V}{E_{\max }}$

Apply all known values, we get

$d_{\min }=\frac{5.0 \times 10^{3}}{3 \times 10^{6}}=1.7 \times 10^{-3} \mathrm{m}=1.7 \mathrm{mm}$

3 0

3 years ago

Peaks in standing wave are called

Tomtit [17]

Answer:

Antinode

Explanation:

The antinode is a point along the wave that has the greatest maximum velocity in the y-direction.

4 0

3 years ago

A particular solvent with ΔS∘vap=112.9J/(K⋅mol)ΔSvap∘=112.9J/(K⋅mol) and ΔH∘vap=38.0kJ/molΔHvap∘=38.0kJ/mol is being considered

Pachacha [2.7K]

Answer:

Explanation:

The concept of gibb's free energy is applied in the problem. Mathematically from Gibb's free energy ; ΔG = ΔH - TΔS

Entropy = ΔS = is the degree of disorderliness of the system.

at equilibrium, ΔG = 0

as such. ΔH = TΔS

Since the enthalpy of vaporization is given ΔHvap = 38.0kJ/mol = 38000J/mol

Also ΔSvap = 112.9J/mol.K

Temperature of the experiment given = 75 degree celsius

calculate the boiling point of the solvent ; T = ΔHvap/ΔSvap

T = 38000J/mol / 112.9J/mol.K

= 335.57K , in celsius ; 335.57K - 273

= 62.57 degree celsius

the temperature calculated indicates that the solvent is not suitable for the experiment because its boiling point is lesser than the temperature at which the experiment want to be carried out.

5 0

3 years ago

Hellowhat is zenith define it ?​

Hellowhat is zenith define it ?