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kirill115 [55]
2 years ago
13

Pls help it's due today​

Physics
1 answer:
mario62 [17]2 years ago
3 0

Answer:

Breh seriously. Ugh fine.

1.B

2.D

3.C

4.C

5.D,A and B

6.A,C and D

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A helium atom has a mass of mHe= 4.002604 u. When disassembled into its constituent subatomic particles (2 protons, 2 neutrons,
Paraphin [41]

Answer:

28.295244 MeV

Explanation:

m_p = Mass of proton = 1.007276 u

m_n = Mass of neutron = 1.008665 u

m_e = Mass of electron = 0.000549 u

Mass of reactant is 4.002604 u

Mass of the products is

2\times (m_p+m_n+m_e)=2\times (1.007276+1.008665+0.000549)=4.03298\ u

(2 because there are 2 of each)

The difference in mass is

4.03298-4.002604=0.030376\ u

So, the work done in MeV would be

0.030376\times 931.5=28.295244\ MeV

The work done required to completely disassemble all the helium is 28.295244 MeV

8 0
3 years ago
Need help please !!!! Hurry
s2008m [1.1K]

Answer:

4

Explanation:

Waves that are squished have higher frequency. It has short wavelength.

3 0
3 years ago
Read 2 more answers
If a ball is rolling across a floor at a constant speed is it accelerating
KATRIN_1 [288]

You already told us that its speed is constant. That's one part of acceleration.

The other part of acceleration is the direction it's moving.

If it's rolling in a straight line, then there's no acceleration.

If it's curving left or right, then that's acceleration.

8 0
3 years ago
What is the velocity of an object with a kinetic energy of 800 J and a mass of 12 kg?
Elis [28]

K.E = 1/2 mv²

800 = 1/2 ×12 ×v²

800 =  6 v²

800 / 6  =  v²

=   133.4    =v²

√133.4  =   √v²

11.5   =  v²

I hope this answer is correct.

3 0
3 years ago
A cup of water is warmed from 21 °C to 85 °C. What is the difference between these two temperatures, in kelvins?
Ilya [14]

Answer:

337k

Explanation:

First, let us find the difference between the given two temperatures.

Difference = 85°C - 21°C

                  = 64°C

<u>And now we have to write the temperature in kelvins.</u>

To convert Celcius to Kelvins you can add 273 to the temperature in Celcius.

<u>Let us find it now.</u>

64°C + 273 = 337k

Therefore,

64°C ⇒ <u>337k</u>

8 0
2 years ago
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