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pickupchik [31]
3 years ago
7

Why do materials absorb some frequencies of electromagnetic radiation and not others?

Physics
1 answer:
AlekseyPX3 years ago
8 0
Well energy absorption by a material depends upon their atomic properties. Energy is absorbed in discrete quanta of energy as predicted by quantum mechanics only if the corresponding energy state is available either it is absorbed by electrons or nucleus depends whether it can go to permissible energy state, if not system can't absorb energy at all. 
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A doctor has a patient blow on one side of a U-shaped tube that is partially filled with water and has a ball floating on the ot
natali 33 [55]

The patient apply pressure to his side of the tube is 15 x 10⁴ N/m². The correct option is D.

<h3>What is pressure?</h3>

The pressure is the amount of force applied per unit area. It is represented as

Pressure p = Force/Area

Given is a doctor has a patient blow on one side of a U-shaped tube that is partially filled with water and has a ball floating on the other side. The ball rises with a force of 150 N. The cross section are of the tube is 0.001 m³

The pressure applied is

p = 150 /0.001

p = 15 x 10⁴ N/m²

Hence, the patient apply pressure to his side of the tube is 15 x 10⁴ N/m².

Learn more about pressure.

brainly.com/question/12971272

#SPJ1

6 0
2 years ago
The decomposition of sulfuryl chloride (so2cl2) is a first-order process. the rate constant for the decomposition at 660 k is 4.
Natali5045456 [20]
<span>THIS IS A GAS PHASE REACTION AND WE ARE GIVE PARTIAL PRESSURES . I WRITE IN TERMS OF P RATHER THAN CONCENTRATION : lnPso2cl12=-kt+lnPso2cl1 initial partial pressure Pso2cl12 the rate constant k and the time t lnPso2cl12=(4.5*10-2*s-1)*65*s+ln (375) so lnPso2cl12=3.002 we take the base e antilog: lnPso2cl12=e3.002 Pso2cl12=20 torr we use the integrated first order rate lnPso2cl12=3.002=k*t+ lnPso2cl12=3.002 we use the same rate constant and initial pressure k=4.5*10-2*s-1 Pso2cl12=375 Pso2cl12=1* so2cl12 Pso2cl12=37.5 torr subtract in Pso2cl12 grom both side lnPso2cl12- lnPso2cl12=-kt ln(x)-ln(y)=ln (x/y) ln (Pso2cl12/Pso2cl20)=-kt we get t -1/k*ln(Pso2cl12/Pso2cl20)=t t=51 s</span>
6 0
4 years ago
If the pressure is 100,000 Pa, R is 8.314, the temperature is 300 K, and the number of moles of gas (n) is 100, what is the volu
djyliett [7]
We can solve the problem by using the ideal gas equation:
pV=nRT
where
p is the pressure of the gas
V is the volume of the gas
n is the number of moles of the gas
R is the gas constant
T is the absolute temperature of the gas

For the gas in our problem, we have:
p=100000 Pa
R=8.314 J mol^{-1} K^{-1}
T=300 K
n=100

If we rearrange the equation and we put these numbers into it, we find the volume of the gas:
V= \frac{nRT}{p}= \frac{(100)(8.314)(300)}{100000}=2.49 m^3
4 0
3 years ago
According to Newton's First Law (the Law of Inertia) -
Nana76 [90]

Answer:

C

Explanation:

I am snart plus I took the same test last year

3 0
3 years ago
Burning can be:
Rufina [12.5K]

Answer:

Controlled for useful work

Explanation:

8 0
3 years ago
Read 2 more answers
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