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3 years ago

Which of the following is the number of cycles per unit of time? infrasonis wave,frequency,ultrasonic wave or pitch

Physics

2 answers:

Allushta [10]3 years ago

4 0

Frequency
Hope this helped :)

kodGreya [7K]3 years ago

3 0

Answer:

Explanation:

permanent magnets, electromagnet

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Two point charges each experience a 1-N electrostatic force when they are 2 cm apart. If they are moved to a new separation of 8

astraxan [27]

Electrostatic force between two points in space is defined as,

$F_e=\dfrac{Q_1Q_2}{4\pi r\epsilon_r\epsilon_0}$

The r is the distance between them.

So if,

$1N=\dfrac{Q_1Q_2}{4\pi 2cm\epsilon_r\epsilon_0}\Rightarrow 2\cdot1N=\dfrac{Q_1Q_2}{4\pi\cdot10^{-2}m\cdot\epsilon_r\epsilon_0}$

Than,

$\boxed{\dfrac{1}{4}N}=\dfrac{Q_1Q_2}{4\pi\cdot 8cm\cdot\epsilon_r\epsilon_0}\Rightarrow8\dfrac{1}{4}N\Leftrightarrow 2N=\dfrac{Q_1Q_2}{4\pi\cdot10^{-2}m\cdot\epsilon_r\epsilon_0}$

Hope this helps.

r3t40

3 0

3 years ago

What can make something move or cause it to stop

arsen [322]

A push or a pull (force) can make something move or cause it to stop. Hope this helps! :)

5 0

3 years ago

Read 2 more answers

How do I make a Bohr model of the boron atom?

4vir4ik [10]

This should help

there always needs to be the two electrons first if possible the 8 electrons for each shell till the number of electron runout

3 0

3 years ago

We start with 5.00 moles of an ideal monatomic gas with an initial temperature of 128 ∘C. The gas expands and, in the process, a

o-na [289]

Answer:

The final temperature of the gas is <em>114.53°C</em>.

Explanation:

Firstly, we calculate the change in internal energy, ΔU from the first law of thermodynamics:

ΔU=Q - W

ΔU = 1180 J - 2020 J = -840 J

Secondly, from the ideal gas law, we calculate the final temperature of the gas, using the change in internal energy:

$ΔU=\frac{3}{2} nRΔT$

$ΔU=\frac{3}{2} nR(T_{2} -T_{1} )$

Then we make the final temperature, T₂, subject of the formula:

$T_{2} =\frac{2ΔU}{3nR} +T_{1}$

$T_{2} =\frac{2(-840J)}{(3)(5)(8.314J/mol.K)} +128 deg.C$

$T_{2} =114.53 deg.C$

Therefore the final temperature of the gas, T₂, is 114.53°C.

7 0

3 years ago

A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of hydrogen. If a second sample of

GREYUIT [131]

Given:

Sample 1:

Chloroform is $CHCl_{3}$

12 g Carbon

1.01 g Hydrogen

106.4 g Cl

Sample 2:

30.0 g of Carbon

Solution:

mass of chloroform from sample 1:

12 + 1.01 +106.4 =119.41 g

Now, for the total mass of chloroform in sample 2:

mass of chloroform $\times$ $\frac{given mass of carbon}{mass of carbon atom}$

mass of chloroform = 119.41 $\times$ $\frac{30}{12}$ = 298.53 g

6 0

3 years ago