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2 years ago

What is the frame of reference for a plane moving at 500 km/h?

Physics

2 answers:

Blizzard [7]2 years ago

7 0

The frame of the reference for a plane equals to 310.7miles

denis23 [38]2 years ago

6 0

You can define a frame of reference depending on your point of view, but it would normally be the Earth.

so your answer is THE GROUND

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The hydronium ion concentration in an aqueous solution is [H+] = 5.3 x10-4 M. What is the hydroxide ion concentration? Is this s

VladimirAG [237]

Answer:a

Explanation:

Given

$[H^+]=5.3\times 10^{-4}\ M$

and $pH+pOH=14$

Also $pH=-\log [H^+]$

therefore $pH=-\log (5.3\times 10^{-3})$

$pH=-(-4-\log (5.3))$

$pH=3.275$

Thus $pOH=14-3.275$

$pOH=10.275$

and $pOH=-\log [OH^{-}]$

$[OH]^{-1}=10^{-10.25}$

$[OH]^{-1}=1.88\times 10^{-11}\ M$

As the pH is less than 7 therefore solution is acidic

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2 years ago

Students in a science class were given a box of materials and asked to use the materials to demonstrate that moving charges crea

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Answer:

what is it

Explanation:

did you get it?

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2 years ago

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What statements are true???

tatiyna

Answer:

Explanation:

opposite charges attract

same charges repel

neutral charges don't attract or repel

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2 years ago

Light that has a wavelength of 600 nm strikes a metal surface, and a stream of electrons is ejected from the surface. If light o

Anni [7]

Answer:

The maximum kinetic energy of the electrons emitted from the surface will be greater.

Option 3 is correct.

Explanation:

Given that,

Wavelength $\lambda_{1}=600\ nm$

Wavelength $\lambda_{2}=500\ nm$

We need to calculate the energy for first wavelength

Using formula of energy

$E=hf$

$E=h\dfrac{c}{\lambda}$

Put the value into the formula

$E_{1}=6.67\times10^{-34}\times\dfrac{3\times10^{8}}{600\times10^{-9}}$

$E_{1}=3.33\times10^{-19}\ J$

We need to calculate the energy for second wavelength

Put the value into the formula

$E_{2}=6.67\times10^{-34}\times\dfrac{3\times10^{8}}{500\times10^{-9}}$

$E_{2}=4.002\times10^{-19}\ J$

So, E₂>E₁

Hence, The maximum kinetic energy of the electrons emitted from the surface will be greater.

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2 years ago

Which of these would be a part of a force diagram for

Strike441 [17]

Answer:

A dot that represents the box

A vector labeled Fg pointing straight down

A vector labeled Fs, pointing parallel to and up the ramp

Explanation:

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