Chemistry, 21.06.2021 20:00 plshelpme53
Trong thí nghiệm Y –âng về giao thoa ánh sáng, khoảng cách giữa 2 khe là 1mm, khoảng cách từ
mặt phẳng chứa 2 khe đến màn quan sát là 1m. Nguồn phát ra ánh đa sắc có bước sóng 380nm 700nm.
Điểm M trên màn, có đúng 3 bức xạ cho vân sáng và 4 bức xạ cho vân tối. Khoảng cách xa nhất từ M đến vân
sáng trung tâm gần giá trị nào nhất sau đây?
Answers: 2
Chemistry, 21.06.2019 15:10
Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.
Answers: 3
Chemistry, 22.06.2019 07:50
In which situation can a mixture always be called a solution
Answers: 3
Chemistry, 22.06.2019 23:00
What is the measured amount of a product obtained from a chemical reaction?
Answers: 1
Chemistry, 23.06.2019 00:20
4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound
Answers: 3
Trong thí nghiệm Y –âng về giao thoa ánh sáng, khoảng cách giữa 2 khe là 1mm, khoảng cách từ
mặt ph...
Mathematics, 08.04.2021 19:10
History, 08.04.2021 19:10
Mathematics, 08.04.2021 19:10
Chemistry, 08.04.2021 19:10
History, 08.04.2021 19:10
Chemistry, 08.04.2021 19:20
Social Studies, 08.04.2021 19:20