Square coil with l = 0.25 m is placed perpendicularly in a uniform magnetic field that change at a rate of db/dt = - 0.04 t/s. (a) what is the magnitude of induced emf in the circuit? (b) what is the induced current in the circuit if the coil resistance is 5 ?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Explain why you think this diagram shows what happened to the carbon in the biodome.

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?