Physics, 06.12.2021 14:00 sandrathompson7250
một đoạn mạch gồm 2 dây dẫn mắc nối tiếp, một dây bằng nikelin dài 3m có tiết diện 1mm2 và dây kia bằng sắt dài 8m có tiết diện 0,5mm2. hỏi khi cho dòng điện chạy qua đoạn mạch này trong cùng một thời gian thì dây nào tỏa nhiều nhiệt lượng hơn
Answers: 3
Physics, 21.06.2019 16:40
What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k
Answers: 1
Physics, 21.06.2019 22:20
The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?
Answers: 2
Physics, 22.06.2019 14:40
Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?
Answers: 3
một đoạn mạch gồm 2 dây dẫn mắc nối tiếp, một dây bằng nikelin dài 3m có tiết diện 1mm2 và dây kia b...
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