3 years ago

What is the state of matter with definite volume?

Physics

2 answers:

GenaCL600 [577]3 years ago

6 0

Solid, and liquids gases do not have volume

Sedbober [7]3 years ago

4 0

Solids and liquids have definite volumes while gases do not

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A 17.3 eV electron has a 0.295 nm wavelength. If such electrons are passed through a double slit and have their first maximum at

4vir4ik [10]

Answer:

0.541 nm

Explanation:

The condition for maxima is,

$dsin\theta=m\lambda$

Here, m=0,1,2,.....

And d is the slit separation, m is the order of maxima, $\lambda$ is the wavelength.

Given that, the 17.3 eV electron posses a wavelength of

$\lambda=0.295 nm\\\\\lambda=0.295\times 10^{-9}m$

And the order of maxima is $m=1$ .

And the angle at which first order maxima occur is, $\theta=33^{\circ}$ .

Put these values in maxima condition while solving for d.

$d=\frac{1\times 0.295\times 10^{-9}m}{sin33^{\circ}} \\d=\frac{0.295\times 10^{-9}m}{0.545} \\d=0.541\times 10^{-9}m}\\d=0.541 nm$

Therefore, the slit separation is 0.541 nm.

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3 years ago

What is the process of preparing a person to perform strenuous work and to recover from that work as quickly as possible?

vesna_86 [32]

The process of preparing a person to perform strenuous work and to recover from that work as quickly as possible is called training, I bet. Such w<span>arm up exercises as like stretching and other should lead person to the recovery. Hope it will help.</span>

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4 years ago

If you and 3 friends are playing tug of war and are pulling with a force of 35 N and your teammate with 37 N, while your opponen

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3 years ago

The water in a deep underground well is used as the cold resevoir of a Carnot heat pump that maintains the temperature of a hous

VMariaS [17]

Answer:

The temperature of well water be 288.07 K

Explanation:

We have given Heat in house $Q_H=13900J$

Work done W = 900 J

Efficiency is given by $\eta =\frac{W}{Q_H}=\frac{900}{13900}=0.0647$

Efficiency is also given by $\eta =1-\frac{T_L}{T_H}$ , here $T_L$ is lower temperature and $T_H$ is higher temperature

So $0.0647=1-\frac{T_L}{T_H}$

$0.0647=1-\frac{T_L}{308}$

$T_L=288.07K$

So the temperature of well water be 288.07 K

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NNADVOKAT [17]

You probably already took this but if anyone wanted to know the answer it's D. "A system where matter and energy cannot enter or leave the system".

(I also took the quiz for it and got it correct)

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