4 years ago

Does displacement must be straight and must include direction

1 answer:

7 0

Displacement is the total space between point a and b. For example, If I walk 3 times North, 6 times East, and 7 times North, what is the displacement? The answer is 10 because when I walked East there was on object blocking my way.

You might be interested in

Scientists observe a red shift when observing:

Arisa [49]

The light we see is red-shifted when we observe a galaxy that's moving AWAY FROM US.

4 0

4 years ago

I got a question is it possible to make sunglasses that let you look at the sun without going blind?

AleksandrR [38]

Yes the lenses make the reflection bounce off

3 0

4 years ago

Read 2 more answers

An x-ray has a wavelength of 4.18 Å. Calculate the energy (in J) of one photon of this radiation. Enter your answer in scientifi

Damm [24]

Answer:

E = 4.75 x 10⁻¹⁶ J

Explanation:

given,

wavelength of the x-ray , λ = 4.18 Å

Energy of photon = ?

we know

$E = \dfrac{hc}{\lambda}$

where h is the planks constant

c is the speed of light

h = 6.626 x 10⁻³⁴ m² kg / s

c = 3 x 10⁸ m/s

now,

$E = \dfrac{6.626\times 10^{-34}\times 3 \times 10^8}{4.18\times 10^{-10}}$

E = 4.75 x 10⁻¹⁶ J

hence, the energy of the photon is equal to E = 4.75 x 10⁻¹⁶ J

4 0

4 years ago

Which statement best describes why electrons are typically not included when determining the mass of an atom?

Ede4ka [16]

<span>The protons and neutrons are much more massive than the electrons.
</span>
The electrons are simply too small to really change the mass, so they aren't counted.

4 0

3 years ago

Read 2 more answers

Which fossil fuel produces the least carbon dioxide

Bad White [126]

It is natural gases hope this helps

6 0

3 years ago