Physics, 06.01.2022 21:50 kingsavage2002
Hai bóng đèn có hiệu điện thế định mức là U1= 1,5 V và U2= 6 V. Khi hai đèn này sáng bình thường thì chúng có điện trở tương ứng là R1= 1,5 Ω và R2= 8 Ω. Cần mắc hai đèn này cùng với một biến trở vào hiệu điện thế U = 7,5 V theo sơ đồ như hình vẽ.Tính điện trở của biến trở khi đèn sáng bình thường
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Physics, 21.06.2019 18:40
Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear
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Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Physics, 22.06.2019 16:30
In the nineteenth century, gregor mendel first determined some basic rules of genetics that have been observed throughout all types of life. no observations have disproved these basic rules of genetics. charles darwin developed the idea of biological evolution around the same time, but he was unaware of mendel’s discoveries in genetics. over a century later, darwin’s idea of evolution was modified in order to incorporate mendel’s rules of genetics along with the other evidence that darwin had used. what is most likely the relationship between mendel’s rules of genetics and darwin’s idea of biological evolution? a.)mendel’s genetics states laws that are now part of the theory of biological evolution.b.)biological evolution states laws that are part of mendel’s theory of genetics.c.)mendel’s genetics replaced darwin’s entire concept of biological evolution.d.)biological evolution is a law that explains why all genetics exist.
Answers: 1
Physics, 22.06.2019 18:30
Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material
Answers: 2
Hai bóng đèn có hiệu điện thế định mức là U1= 1,5 V và U2= 6 V. Khi hai đèn này sáng bình thường thì...
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