Cho mạch điện như hình 2.15, biết op-amp có điện áp bão hòa +-12V, R1=10Kohm, R2=100Kohm. Tính V0 trong các trường hợp sau:
a. Vi(t) = 0,5sint (V)
b. Vi(t) = sint (V)
c. Vi(t) = 2sint (V)

What precautions should you take to prevent injuries when dealing with heavy loads?

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer