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3 years ago

Which type of electromagnetic radiation cannot be focused?

Physics

2 answers:

Irina18 [472]3 years ago

7 0

The answer is A. Hope this helps. :)

dalvyx [7]3 years ago

5 0

(A) Gamma rays

Focussing is a process in which a beam of light is passed and concentrated on the particular point.

Gamma rays are the type of elecromagnetic radiation that cannot of focused. Gamma rays has high frequency and also are quite energetic due to which when the beam of light is passed through it, it becomes too difficult to focus on a particular point as they interacts strongly with the matter and destroys itself. Hence, Gamma rays are not easily focused.

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A compunds whose empirical formula is xf3 consists of 65% f by mass. what is the atomic mass of x

Reika [66]

Empirical formula of compound is XF3

Compound consist of 65% F

In 100g of compound there is 65 g of F

= 65 / 19 moles of Fluorine = 3.421 moles

So moles of X = 3.421 / 3 = 1.140 moles

And in 100 g X consist of 35 g

So the molar mass of X = 35 / 1.140 = 30.71 g = 31 approximately

And it is the mass of phosphorus

So the empirical formula for the compound is PX3

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2 years ago

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nikitadnepr [17]

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2 years ago

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If the magnitude of a charge is twice as much as another charge, but the force experienced is the same, then the electric field

Darina [25.2K]

Answer:

The new electric field strength of this charge is half of the strength of the other charge.

Explanation:

The electric force acting on the charge particle is given by :

F = q E

$E=\dfrac{F}{q}$

Where

q is the charged particle

E is the electric field

If the magnitude of a charge is twice as much as another charge, q' = 2q, but the force experienced is the same, then the new electric field is given by :

$E'=\dfrac{F}{q'}$

$E'=\dfrac{F}{(2q)}$

$E'=\dfrac{1}{2}\times \dfrac{F}{q}$

$E'=\dfrac{E}{2}$

So, the new electric field strength of this charge is half of the strength of the other charge. Hence, this is the required solution.

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2 years ago