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This showed up as an answer request, so I’ll add my two cents to the other good answers:It is important to note that the “M” in E=Mc^2 is the mass that is created from energy or converted to energy in a process. In all real processes like nuclear power plants or atomic bombs, M is usually a small fraction of the total mass m of material involved. For example, a large nuclear power plant has tons of uranium in its core, but it only converts about 1 kg per year of mass to energy.You can go from E = Fd to E=Mc^2 but, again, the M is only the m created by high velocity. That is, when a force is causing a high velocity by sustaining an acceleration over a distance “d”, E = (m-m)c^2 where m is the rest mass and m is the relativistic mass, which is equal to m/SQRT(1–(v/c)^2).***Here is a detailed derivation of the steps where below I use “m” for the relativistic mas and m for the rest mass, so I solve to show E = (m-m)c^2[Step 1] Express force F=d(mv)/dt for acceleration:m = m /SQRT(1-v^2/c^2)That is derived separately from the time dilation formula, for this answer I am just using it as a well-known mass increase with speed relation. m is the rest mass, v the velocity and c the speed of light.By chain rule, F = mdv/dt + v dm/dt = ma + vd/dt( m (1-v^2/c^2)^-1/2)Solving, F = ma + v(-1/2)(m (1-v^2/c^2)^-3/2)(-2v/c^2)Substitute m = m (1-v^2/c^2)^-1/2 to get F=ma+ma(v^2/c^2)(1-v^2/c^2)^-1F = ma(1+(v^2/c^2)/(1-v^2/c^2))F=ma(1-v^2/c^2)^-1 or in terms of the constant rest mass, F=ma(1-v^2/c^2)^(-3/2)[Step 2] Express E = integral of Fds assuming a constant acceleration “a” and substituting v^2=2sa. I solve the equation for the specific case of constant acceleration. That makes it easy to solve the integral because a is constant, and velocity is acceleration times time, or v = at, and distance s= 1/2at^2, so that velocity squared becomes v^2 = 2sa by algebraic manipulation. Then you get a formula for E = integral of Fds where F is only a function of sE = integral {ma(1–2sa/c^2)^(-3/2)} dsE = ma(-2)(1–2sa/c^2)^-1/2(-c^2/2a) = mc^2(1–2sa/c^2)^-1/2evaluated from 0 to distance s givesE = mc^2(1–2sa/c^2)^-1/2 - mc^2[Step 3] evaluate Mc^2 given that M = mass - initial mass, and m=m(1–2sa/c^2)^-1/2, where we’ve used v^2 = 2saMc^2 = m(1–2sa/c^2)^-1/2 - mc^2The equivalence of the answers in [step 2] and [step 3] show E=Mc^2. Note that while we solve this in step 2 for constant acceleration, the result is applicable for any kind of acceleration, since the end result compared to the initial state is what matters. That is a function of conservation of energy. No matter how you get from state 1 to state 2, the total energy change is the same, so E would be the same by any acceleration history.

This may be a fact little known in the Quora community.In China, C-section requires the permission of family members before a woman can undergo the operation.In other words, the woman does not have the power to decide on her own in terms of childbirth, even though she is the one to bear the excruciating pain and the possible complications.In 2017, a 26-year-old pregnant woman chose to take her life by jumping from the 5th floor of the hospital, after her family refused permission for a C-section. [1][1][1][1]The 26-year-old Rongrong Ma was 42 weeks pregnant when she was pushed into the maternity ward at a local hospital. An ultrasound indicated that the fetus's head was too large for a natural birth, so the doctors strongly recommended a C-section operation.However, her family refused to give consent.Ma pled with her family at least three times, even falling on her knees, to allow her to have a C-section so that her excruciating labor pain could be somewhat alleviated. Her family firmly denied her request again and again, until the point where the doctors decided that she was far into labor to safely start a C-section operation.Two hours later, when the medical staff were busy tending to other pregnant women in the ward, Ma slipped into an empty ward on the fifth floor and jumped from the window. Both she and the unborn child were killed.Her family denied her request for C-section for unspecified reasons. Some say that they refused to give consent to the operation because a natural birth would be beneficial to the baby and make the second pregnancy easier, while some say that the family was concerned about the cost of the operation.Ma and her husband came from one of the most poverty-stricken regions in China. Thus, ideas linked to childbirth are much less progressive.After this news hit the national headline, Ma's family attempted to tell a different version of the story in which they granted Ma's request for a C-section, but the hospital had no record of their permission.I was born by C-section. I knew first-hand that in less progressive times people encourage natural birth at all cost. They want their baby to be absolutely perfect, since one-child policy limits the number of children per household.For the past two decades, I've heard numerous people saying that babies born by C-section tend to be less intelligent because “their head wasn't pressured in the birth canal”. As a child I believed what adults said, so I blamed C-section for my poor academic performance at school.Today, I still don't know whether such rumors about the downside of C-section are true, but I believe the life of the pregnant woman matters more than the unborn baby.Footnotes[1] Between birth and death |[1] Between birth and death |[1] Between birth and death |[1] Between birth and death |

Maa Radhaa: Hey My Dear SonMe: Ohh My Mother( That time i touch her feet) and said , I have 1 request to youMaa Radhaa: Sure My Son what you Want?Me: I want To see Maa PARVATI🥺 i am her Big Devotee I want to Meet her i want to touch Her feetMaa Radha: Yes My dear Son OfcourseThat time Maa Radhaa request Maa PARVATI to mee Me and that time Maa PARVATI came in front kf me and I meet My Mother Maa Gauri And i will Hug My Mother and Touch Her Feet and My wish is complete 😊That time i also Hug Maa Radhaa and Touch her feet and SaidThank you My Mother Radhaa 😊🕉Jay Gauri Shankar🕉🚩Jay Radha Krishna 🚩