2 years ago

What is the correct answer?

1 answer:

4 0

Red line -1 because it is just starting out and climbing speed so his energy is at lowest hopefully this helps

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7nadin3 [17]

thank you so much for the schlatt

8 0

2 years ago

Setler [38]

Because the molecules that move freely begin to compact closer together, with less heat, means less molecular activity.

8 0

3 years ago

strojnjashka [21]

Answer: not sure

Explanation:

4 0

2 years ago

emmasim [6.3K]

Answer:

B. changing by a constant amount each second

Explanation:

thats my answer

5 0

3 years ago

Troyanec [42]

Answer:

i)20369 photons

ii) 40 ps

Explanation:

Momentum of one Sodium atom:

$P=m*v =600m/s*23amu*\frac{1 kg}{6.02*10^{23}amu}\\P=2.29*10^{-23}kgm/s$

In other to stop it, it must absorb the same momentum in photons:

$P=2.29*10^{-23}kgm/s=n_{photons}*\frac{h_{planck}}{\lambda}\\=n*\frac{6.63*10^{-34}}{589*10^{-9}} \\==>n=20369 photons$

Now, for the minimun time, we use the speed of light and the wavelength. For the n photons:

$t=n*T=n*\frac{\lambda}{c} =20369*\frac{589nm}{3*10^{8}m/s}=4*10^{-11} second=40 ps$

7 0

2 years ago