Which type of diffraction occurs when the point source and the screen are at finite distances from the obstacle forming the diffraction pattern? A. fraunhofer
B. fresnel
C. far-field
D. single slit

If a simple machine reduces the strength of a force, what must be increased?

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem