Answer:
4.1 * 10^5
Explanation:
410,000
As we can see, there are 4 zero and 1 number 1 after the first number so the number when written in scientific notation would be:
4.1 * 10^5
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Answer:
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Explanation:
Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.
Answer:
Explanation:
1 ) D)5,000,000
Compared to the chemical oxidation of one atom of carbon, a nuclear fission reaction using one atom of uranium can yield about 5000000____ times the energy output.
Energy in fission reaction comes from the conversion of mass into energy . This process results into creation of enormous amount of energy . But in the oxidation reaction of carbon , bonds are broken and new bonds are formed in which energy is used and released . The net energy released is difference of energy evolved minus energy used up . This difference is not much . Hence in such chemical reaction , energy released is not much .
2 ) B)The mass number is just an estimated mass measurement that is not precise.
In such calculation , the mass number used is just an estimated mass number and not the precise mass of particles involved . Hence , due to lack of precision in calculation , mass number appears to be constant . But actually there is decrease in mass in both fission and fusion reaction .
3 ) D
In fission reaction , large atomic nuclei splits into smaller nuclei to attain stability .
Answer:
Yttrium-90 is used for treatment of cancer, particularly non-Hodgkin's lymphoma and liver cancer, and it is being used more widely, including for arthritis treatment. Lu-177 and Y-90 are becoming the main RNT agents. Iodine-131, samarium-153, and phosphorus-32 are also used for therapy.
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(2) the motion of the gas particles is random and straight-line, they cannot be influenced by outside forces, one example being a magnetic field.