2 years ago

Can someone help me with this physics question? I don't know which answer is correct.

Physics

1 answer:

san4es73 [151]2 years ago

5 0

3. Distance is a quantity that is always a vector.

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2 years ago

7 Consider two homogeneous bodies of

kupik [55]

Answer:

No, it is not necessary for them to have same mass.

Explanation:

Let both bodies have a density d1 and d2 respectively.

Since their volumes are equal V1 = V2

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Hence, d1 = $\frac{m1}{V1}$ and d2 = $\frac{m2}{V2}$

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$\frac{d1}{d2} = \frac{m1}{m2}$

This implies that unless the bodies have same densities, the mass of the two bodies will not be same.

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3 years ago

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2 years ago

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2 years ago

Light shines through atomic Hydrogen gas. It is seen that the gas absorbs light readily at a wavelength of 91.65 nm. What is the

hoa [83]

Answer:

n = 19

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$\lambda$ = Wavelength of the light absorbed = 91.65 nm = 91.65 x 10⁻⁹ m

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$n_{1}$ = 1

Using conservation of energy

$\frac{hc}{\lambda} = (13.6\times1.6\times10^{-19}) (\frac{1}{n_{1}^2} - \frac{1}{n_{2}^2} )\\\frac{(6.63\times10^{-34})(3\times10^{8})}{(91.65\times10^{-9})} = (13.6\times1.6\times10^{-19}) (\frac{1}{1^2} - \frac{1}{n^2} )\\2.17\times10^{-18} = (21.76\times10^{-19}) (\frac{1}{1^2} - \frac{1}{n^2} )\\n = 19$

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2 years ago