Recent content by vu95112

Hello denverdoc, Thank you very much for your help. A diagram is very useful. The first image is 10ft The second image is 30 ft The third image is 40 ft Thank you, Vu95112

Plane Mirror A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distances from the person to the first three images seen in the left-hand mirror when the person is 5ft from the mirror on the left wall and 10 ft from the mirror on the...

Need help on Plane Mirror Plane Mirror A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distances from the person to the first three images seen in the left-hand mirror when the person is 5ft from the mirror on the left wall and 10...

Hello FoxCommander, Thank you very much for your help. I got it. I can search it on Google. I wish you have a very nice Thanksgiving. Vu95112

I read one book. The author says that, in the old day, people know to apply physics to lead a boat against the wind. Anyone can help me on this question. What is the law in physics do they apply? Thank You.

Thank you very much. I got it.

Hello, I am sorry. I just need you help a little. Thanks I have learn this formula B = µ0 I / (2 п r) Where µ0 = 4 п * 10 ^ -7, I is current , r is the radius, and п = 3.14 But, it is hard to apply on this problem

Hell all, I need your help. Thanks The magnetic field 40 cm away from long, straight wire carrying current 2.00 A is 1 µ T. At one instance, the two conductors in a long household extension cord carry equal 2-A currents in opposite directions. The two wires are 3mm apart. Find the magnetic...

Hello Berkeman, Thank you very much.

Hello Berkeman, Thank you very much. Torque = (L/2) BI Where I is current, B is magnetic field , and L is the length Torque = (0.1/2)m * 0.01T 3.4A = 0.0017 N 4 m ---------------- 0.1Kg 0.1 m ------------- X X = (0.1*0.1) / 4= 0.0025 Kg F = mg = 0.0025Kg * 9.8 = 0.0245 N How...

Hello tiny-tim, Thank you very much. Nice to meet you. Here is my way to solve Torque equals to gravity force Torque = mg = NBIASinө So ө = Arcsine ( mg/( NBIA) = Arcsine ( 0.5Kg x 9.8 )/ ( 10 X 0.01 T x 3.4 A x 0.01 m x 0.01m) But the answer does not come right. Thank You

Please help me on this homework. Thank you. A long piece of wire with a mass of 0.100 Kg and a total length of 4.00 m is used to make a square coil with a side of 0.100 m. The coil is hinged along a horizontal side, carries a 3.4-A current, and is placed in vertical magnetic field with a...