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tankabanditka [31]
3 years ago
8

In three to four sentences, explain how the photoelectric effect supports a particle model of electromagnetic radiation. As part

of your response, evaluate the idea that radiation frequency and intensity highlight how the wave model is inadequate to explain the photoelectric effect.
Physics
1 answer:
mr_godi [17]3 years ago
7 0

The photoelectric effect supports a particle model of electromagnetic radiation as it behaves like an elastic collision between two particles.

<h3>What is Photoelectric effect?</h3>

This is defined as the emission of electrons when electromagnetic radiation, such as light, hits a material.

The energy of a wave increases with an increase in intensity and in photoelectric effect. However intensity has no effect on the energy of electrons emitted which is why it is inadequate to explain the photoelectric effect.

Read more about Photoelectric effect here brainly.com/question/1408276

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Please help will give the brainliest<br><br> How did humans decide how long a year should be?
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A student throws a rock horizontally off a 5.0 m tall building. The rock's initial speed is 6.0 m/s. How long will it take the r
Archy [21]

Answer:

The time taken by the rock to reach the ground is 0.569 seconds.

Explanation:

Given that,

A student throws a rock horizontally off a 5.0 m tall building, s = 5 m

The initial speed of the rock, u = 6 m/s

We need to find the time taken by the rock to reach the ground. Using second equation of motion to find it. We get :

s=ut+\dfrac{1}{2}gt^2\\\\5=6t+\dfrac{1}{2}\times 9.8t^2\\\\t=0.569\ seconds

So, the time taken by the rock to reach the ground is 0.569 seconds. Hence, this is the required solution.

5 0
4 years ago
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By what factor does the sound intensity increase if the sound intensity level increases from 60 db to 61 db?
tiny-mole [99]

Answer:

\frac{I_{2}}{I_{1}} = 10^{0.1}

Explanation:

The sound intensity level β can be mathematically defined as

\beta(dB) = 10log_{10}(\frac{I}{I_{o} } )

where I_{o} is the reference intensity and is equal to 10^{-12} W/m^{2}.

Now,

\beta_{2} - \beta_{1} = 10 log\frac{I_{2} }{I_{o}} -  10 log\frac{I_{1} }{I_{o}}\\62-60= 10log(\frac{\frac{I_{2} }{I_{o} } }{\frac{I_{1} }{I_{o} } } )\\1=10log(\frac{I_{2} }{I_{1} } )\\\\\frac{I_{2} }{I_{1} }=10^{0.1}

6 0
4 years ago
A rifle with a weight of 40 N fires a 5.5-g bullet with a speed of 220 m/s.(a) Find the recoil speed of the rifle.
liubo4ka [24]

Answer:

0.2695/s

Explanation:

Using the formula for calculating impulse

Impulse = m(v-u) = Ft

M is the mass

v is the final velocity.

u is the initial velocity

F is the force

t is the time

Get the time;

t = m(v-u)/F

t = 0.0055(220)/40

t = 0.0275s

Get the speed of the rifle

v = u+gt.

v = 0+9.8(0.0275).

v = 0.2695m/s

Hence the speed of the rifle is 0.2695m/s

3 0
3 years ago
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