Which of the following scientists won a nobel prize for pioneering work in the stunt of radioactive elements? a. subrahmanyan chandrasekhar's b. marie shlodowska-curie's c. ibn al-haytham's d. christian doppler's

Correct Answer is (B. Marie shlodowska-Curie's )

Explanation:

In 1911 Marie Curie received Nobel Prize for Chemistry, for her discoveries and studies of the radioactive elements radium(Radium is a chemical element with symbol Ra and atomic number 88. ) and polonium(Polonium is a chemical element it is represented by Po and atomic number of polonium is 84. It is rare and highly radioactive metal.Polonium does not have any stable isotopes, polonium is chemically similar to selenium and tellurium but  its metallic character resembles with thallium, lead, and bismuth). She is the only woman so far, who has been awarded the Nobel Prize twice.

In 1903, Marie Curie and her husband (Pierre Curie) was awarded with the Nobel Prize for the first time in the feild of Physics for their study into the spontaneous radiation discovered by Becquerel.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it