Recent content by cutesoqq

According to which law the magnetic field of the solenoid can be represented by the voltage induced in the search coil ? :rolleyes: :biggrin:

thank you very much

HI As we know, the fundametal freq of a stretched string is f=v/2L while the fundametal freq. of a closed pipe is f=v/4L then, how can the fundametal freq. of both can be the same?! and, what factors would affect their freq.?!

right... driven = driving in my notes...i feel troublesome with these words too...

In my notes, there are two sentences make me feel strange... As we know, the pendulum whose length equals to that of the friver pendulum, its natural frequency of oscillation if the same of the frequency of the driving one. This is known as resonance oscillation. However, somewhere I found...

thx>> Andre^^

I hv the following problems: 1. Using Doppler's effect, can we explain why frequency will change in two different situation? 2. What is the application of Doppler's effect? :smile:

Do u mean that the equation is available for any planets?! Then, I must put G be the universal gravitational constant, M be mass of the moon as well as R be the radius of the moon, right?!

Sorry, do u mean that using the equation above, the g of the moon or other planets can be solve?!...Actually, I still don't really understand...

Hello, Does anyone can tell me how to derivate the forumla for the acceleration due to gravity, i mean how to find the g of other planets like the moon?...