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Lerok [7]
3 years ago
14

A metallic conductor moving at a constant speed in a magnetic field may develop a voltage across it. this is an example of _____

_____.
Chemistry
1 answer:
marysya [2.9K]3 years ago
3 0
A metallic conductor moving at a constant speed in a magnetic field may develop a voltage across it. This is an example of Motional emf
Hope this helps!
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A minimumenergy of 7.21x10-19 J is required to produce the photoelectric effect in chromium metal.
forsale [732]

Answer:

<em>2.085 x 10^-20 J</em>

<em></em>

Explanation:

minimum energy required to produce photoelectric effect in chromium is given as hf =  7.21 x 10^-19 J

The work function of chromium Ф = 4.37 eV = 7.00151 x 10^-19 J

The minimum energy required to eject an electron from from a chromium metal E = ?

From E = hf - Ф

substituting values, we have

E = (7.21 x 10^-19) - (7.00151 x 10^-19)

E = <em>2.085 x 10^-20 J</em>

7 0
3 years ago
Which have the most gravitational potential energy?
Free_Kalibri [48]
I believe D because since it is up so high when the lady begins to fall she will have a greater force bringing her back to her original starting point
4 0
2 years ago
In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock.
max2010maxim [7]

Answer:

when sediments harden, extreme pressure increase the temperature and then take time to alter to metamorphic rocks. <3~

6 0
2 years ago
When an ionic compound is named or its formula is written, what sort of element is placed first? What is the charge on its ions?
gizmo_the_mogwai [7]
Positive unless your mean to them then everyones negative towards you.
8 0
3 years ago
A sample of lead has a density of 11.3 g/cm3 and a mass of 123 grams, what is the volume of the sample?
SVEN [57.7K]

Answer:

The answer is

<h2>11.18 cm³</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 123 g

density = 11.3 g/cm³

The volume is

volume =  \frac{123}{11.3}   \\  = 11.18181818...

We have the final answer as

<h3>11.18 cm³</h3>

Hope this helps you

3 0
3 years ago
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