# (A)the sun burns up 3.6*10 power 9 kg of matter each second. using the formula E=MC^2 DETERMINE HOW MUCH ENERGY THE SAUN FELEASES EACH SECOND .THE SPEED OF LIGHT IS 3*10^8 m/s? (B)what other ...

(A)the sun burns up 3.6*10 power 9 kg of matter each second. using the formula E=MC^2 DETERMINE HOW MUCH ENERGY THE SAUN FELEASES EACH SECOND .THE SPEED OF LIGHT IS 3*10^8 m/s?

(B)what other isotope of uranium occurs in the U-238 decay series? is this isotope of uranium you found is stable or radioactive ?

(C) )the frequency of gamma radiation is 10 to the power of 22 Hz. if planks constant ,h, is equal to 6.6*10 (to the power of) -34 J.s, what is the energy of each gamma ray photon? show calculations

alice claims that she can snuff out a candle without touching or breathing on oi.she cuts off the bottom of a plastic soda bottle,plus a plastic bag taut over the bottom and secures it with a rubber band .she then holds the open ,pouring end of the bottle abut 1 inch from a burning candle and proceeds to hit the plastic bag sharply,producing a noise .as she promised ,the flame goes out .why?

*print*Print*list*Cite

### 1 Answer

A. The energy equivalent to matter with mass m is given by the equation E = m*c^2 where c is the speed of light. The fusion reaction in the Sun consumes 3.6*10^9 kg of matter each second. The energy released during this process is equal to 3.6*10^9*(3*10^8)^2 = 3.24*10^26 J. The energy released by the Sun in each second is 3.24*10^26 J.

B. As the isotope U-238 of Uranium undergoes fission, the other isotope of uranium present in the decay series is U-234. This isotope of Uranium has a half life of 2.47*10^5 years and it is radioactive. The decay process continues till the formation of a stable isotope of lead, Pb-206.

C. The energy of a photon is given by the relation E = h*v where h is Planck's constant and v is the frequency of the photon. Gamma radiation has frequency 10^22 Hz. The energy of a gamma ray photon is 6.6*10^-34*10^22 = 6.6*10^-12 J.

D. Alice cuts the bottom of a plastic soda bottle and fixes a sheet of plastic with a rubber band taut over the bottom. Then she inverts the bottle over a burning candle and strikes the plastic bag sharply. When this is done, the air just below the plastic sheet is compressed, as air is fluid a compression wave is created that continues downwards and emerges as a a fast moving stream of air over the candle. This puts out the candle flame.

**Sources:**