Một người đi xe gắn máy hỏi đường từ châu đốc đi về bến xe tân châu, và được hướng dẫn như sau:"Quan phà Châu giang anh đi thẳng về hướng Tân Châu đến ngã tư rẽ phải chạy thẳng 20m nhìn bên phải sẽ đến bến xe tân châu " trong hướng dẫn đã sử dụng các vật cố định nào để làm mốc chỉ đường và có những hướng di chuyển nào? Em hãy ước lượng được thời gian người đi xe gắn máy đến được bến xe tân châu trong bao lâu ( có giải thích cụ thể)

Chapter 23, problem 075 the figure shows a geiger counter, a device used to detect ionizing radiation (radiation that causes ionization of atoms). the counter consists of a thin, positively charged central wire surrounded by a concentric, circular, conducting cylindrical shell with an equal negative charge. thus, a strong radial electric field is set up inside the shell. the shell contains a low-pressure inert gas. a particle of radiation entering the device through the shell wall ionizes a few of the gas atoms. the resulting free electrons (e) are drawn to the positive wire. however, the electric field is so intense that, between collisions with gas atoms, the free electrons gain energy sufficient to ionize these atoms also. more free electrons are thereby created, and the process is repeated until the electrons reach the wire. the resulting "avalanche" of electrons is collected by the wire, generating a signal that is used to record the passage of the original particle of radiation. suppose the radius of the central wire is 24 âµm, the inner radius of the shell 2.3 cm, and the length of the shell 14 cm. if the electric field at the shell's inner wall is 2.8 ă— 104 n/c, what is the total positive charge on the central wire?

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

The discovery of the electron as a subatomic particle was a result of