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3 years ago

Definition of fluoresence

2 answers:

5 0

The visible or invisible radiation emitted by certain substances as a result of incident radiation of a shorter wavelength such as x-rays or ultraviolet light

denis23 [38]3 years ago

4 0

Answer:

the property of absorbing light of short wavelength and emitting light of longer wavelength.

Explanation:

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When an average force F is exerted over a certain distance on a shopping cart of mass m, its kinetic energy increases by 12mv2.

VMariaS [17]

Answer:

A) $d=\dfrac{1}{2F}mv^2$

B) $\Delta KE'=2\times \dfrac{1}{2}mv^2$

Explanation:

Given that

Force = F

Increase in Kinetic energy = $\dfrac{1}{2}mv^2$

$\Delta KE=\dfrac{1}{2}mv^2$

we know that

Work done by all the forces =change in the kinetic energy

Lets distance = d

We know work done by force F

W= F .d

F.d=ΔKE

$F.d=\dfrac{1}{2}mv^2$

$d=\dfrac{1}{2F}mv^2$

If the force become twice

F' = 2 F

F'.d=ΔKE'

2 F .d = ΔKE' ( F.d =Δ KE)

2ΔKE = ΔKE'

$\Delta KE'=2\times \dfrac{1}{2}mv^2$

Therefore the final kinetic energy will become the twice if the force become twice.

8 0

3 years ago

Can you get very smart?

Mamont248 [21]

Actually according to physics there should be needed a force to move things but our mind does not produce a force ...Apart from myths ...is seems quite impossible to move a object with ur mind

-Thanks for reading

6 0

2 years ago

Describe how you determine whether an object is in motion

Flauer [41]

An object is in motion when its distance from another object is changing.

7 0

3 years ago

What is spontaneous emission?

Oxana [17]

Answer:

Spontaneous emission is a quantum effect, which in a semiclassical picture can be described as an emission which is stimulated by vacuum noise.

5 0

3 years ago

Read 2 more answers

What are/is the formula(s) for amplitude (simple harmonic motion)?

klemol [59]

Answer:

maximum displacement from equilibrium

Explanation:

8 0

3 years ago