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belka [17]
4 years ago
11

What is the answer to this question

Physics
1 answer:
netineya [11]4 years ago
4 0
B.describes what occurs every time in a situation
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A 0.70-kg disk with a rotational inertia given by MR 2/2 is free to rotate on a fixed horizontal axis suspended from the ceiling
Setler [38]

Answer:

The force will be "9.8 N".

Explanation:

The given values are:

mass,

m = 0.7 kg

M = 2

g = 9.8

Now,

⇒  \tau = T \alpha

then,

⇒  \frac{1}{2}mR^2(\frac{1}{R}\frac{dv}{dt}) =M(g-a_t)R

⇒  \frac{1}{2}m \ a_t=m(g-a_t)

⇒  a_t=\frac{2g}{(\frac{m}{M} +2)}

On substituting the values, we get

⇒      =\frac{2\times 9.8}{\frac{0.7}{2} +2}

⇒      =8.34 \ m/s

hence,

⇒  T=mg+M(g-a_t)

On substituting the values, we get

⇒      =0.7\times 9.8+2(9.8-8.34)

⇒      =6.86+2(1.46)

⇒      =6.86+2.92

⇒      =9.8 \ N

5 0
3 years ago
does a Neon atom emits specific frequencies of light that correspond to decreases in energy of its electrons.
zlopas [31]

Answer:

Yes, the frequency of light emitted is a property of the difference between the levels of energy of its electrons.

Explanation:

Neon atom is a noble gas which glows when its electrons de-excites after absorbing energy.

Niels Bohr postulated that the energy level in all atoms are quantized, thus electrons do not exist in-between two levels.  When electrons in the Neon atom are excited, this increase in energy causes them to jump to a higher energy levels. On de-excitation, the electrons drops to their initial level releasing the absorbed energy in the form of a photon.

The photon emitted has a frequency that is directly proportional to the energy change in the electron.

6 0
3 years ago
Which one of the 4 answers is it?<br><br><br>​
slavikrds [6]
5 n to the right I think Hope this helps
8 0
3 years ago
PLEASE HELP ME THIS IS VERY IMPORTANT!!!!!!!!!!!!! 20 points and I will give brainlyest
Phoenix [80]

Answer: I believe it’s location D. Or whichever is the location of slow crystallization.

Explanation: Slow crystallization of magma forms granite. Hope this helps. :)

6 0
3 years ago
Read 2 more answers
Two boys with masses of 40 kg and 60 kg stand on a horizontal frictionless surface holding the ends of a light 10-m long rod. Th
kari74 [83]

When they meet the 40-kg boy will have moved a distance of 6 m.

Displacement of the 40 kg boy

The displacement of the 40 kg boy is calculated from the principle of center mass.

X(40 kg) = (60 x 10 m    +  40 x 0)/(40 kg + 60 kg)

X(40 kg) = (600)/(100) = 6 m

X(60 kg) = (60 x 0    +  40 x 10 m)/(40 kg + 60 kg)

X(60 kg) = (400)/(100) = 4 m

Thus, when they meet the 40-kg boy will have moved a distance of 6 m.

Learn more about center mass here: brainly.com/question/13499822

#SPJ1

7 0
2 years ago
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