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3 years ago

Que es una ondaaaa?? no me deja escribiiiirrrrrr

Physics

1 answer:

UkoKoshka [18]3 years ago

7 0

Answer:

yo queiro escribir mi hermano

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What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 18.4 V while a curr

Effectus [21]

Answer:

0.888 ohm

Explanation:

We have given that the battery has an emf of 12 volt that E =12 volt

Terminal voltage V =18.4 volt

Current through the battery is =7.20 A

We have top find the internal resistance of the battery

Now according to Kirchhoff's law V=E+IR

So $R=\frac{V-E}{I}=\frac{18.4-12}{7.2}=0.888\ ohm$

So the value of internal resistance of battery is 0.888 ohm

5 0

3 years ago

A diffraction grating with 161 slits per centimeter is used to measure the wavelengths emitted by hydrogen gas. At what angles i

Tresset [83]

Answer:

$\theta_1 = 0.400^o$

$\theta_2 =0.378^o$

Explanation:

From the question we are told that

The number of slits per cm is k = $161\ slits\ per\ cm = 161 \ slits\ per\ 0.01 m$

The order of the maxima is n = 1

The wavelength are $\lambda_1 = 434 nm = 434 *10^{-9} \ m \ \ \ , \lambda_2 = 410nm = 410 *10^{-9} \ m$

The spacing between the slit is mathematically represented as

$d = \frac{ 0.01}{k}$

=> $d = \frac{ 0.01}{161}$

=> $d = 6.211 *10^{-5} \ m$

Generally the condition for constructive interference is

$n\lambda = d \ sin \theta$

At $\lambda_1$

$\theta _1 = sin^{-1} [ \frac{1 * 434 *10^{-9}}{6.211 *10^{-5}} ]$

$\theta_1 = 0.400^o$

At $\lambda_2$

$\theta _2 = sin^{-1} [ \frac{1 * 410 *10^{-9}}{6.211 *10^{-5}} ]$

$\theta_2 =0.378^o$

4 0

3 years ago

Which of the following refers to the region where there is a high probability of finding an electron?

yan [13]

The answer is:
a. electron cloud

4 0

2 years ago

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A scalar is a mathematical term for:

Iteru [2.4K]

Answer:

c. A number and a unit

Explanation:

A scalar is a real number. We often use the term scalar in the context of vectors or matrices, to stress that a variable such as a is just a real number and not a vector or matrix.

3 0

3 years ago

the maximum displacement of a particle, within a wave, above or below its equilibrium position, is called__________

Gre4nikov [31]

Answer:

the amplitude.

Explanation:

3 0

3 years ago

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