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3 years ago

5

I will give brainliest. Please help!

1 answer:

dsp733 years ago

8 0

I’m pretty sure the answer is d

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Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of 5.49 × 1014 hz.

Tcecarenko [31]

The energy of a photon is given by
$E=hf$
where
$h=6.6 \cdot 10^{-34} Js$ is the Planck constant
f is the frequency of the photon

In our problem, the frequency of the light is
$f=5.49 \cdot 10^{14}Hz$
therefore we can use the previous equation to calculate the energy of each photon of the green light emitted by the lamp:
$E=hf=(6.6 \cdot 10^{-34}Js)(5.49 \cdot 10^{14} Hz)=3.62 \cdot 10^{-19} J$

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4 years ago

All types of mass movement are caused by the force of

PilotLPTM [1.2K]

Answer:

Mass and Acceleration

Explanation:

The typical Force equation is:

F = ma

where m = mass, and a=acceleration.

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3 years ago

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Hello, can you please help me with this problem?

dolphi86 [110]

Answer:

You're right already. It's B)

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3 years ago

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If the Sun, Earth, and Moon are lined up as shown above, then the Earth would have...

lbvjy [14]

This is 6th grade earth science right?

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3 years ago

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Two circular coils are concentric and lie in the same plane. The inner coil contains 170 turns of wire, has a radius of 0.012 m,

GREYUIT [131]

Answer:

The current of the outer coil is $I_o = 3.99 \ A$

Explanation:

From the question we are told that

The number of turns of the inner coil is $N_i = 170 \ turn$

The radius of the inner coil is $R_i = 0.012 \ m$

The current of the inner coil is $I_i = 6.2 \ A$

The number of turns of the outer coil is $N_o = 220 \ turns$

The radius of the outer coil is $R_o = 0.02 0 \ m$

Generally the net magnetic field is mathematically represented as

$B = \frac{N \ mu I }{ 2 * R }$

Now from told that the net magnetic field is common

So

$\frac{N_i \mu I_i} {2 * R _i} = \frac{N_o \mu I_o} {2 * R _o}$

Here $\mu$ is the permeability of free space

making $I_o$ the subject

$I_o = \frac{ N_i I_i *2 * R _o}{N_o *2 * R _i}$

substituting values

$I_o = \frac{ 170 *6.2 *2 * 0.020}{220 *2 * 0.012}$

$I_o = 3.99 \ A$

5 0

4 years ago