Problem 4: this problem deals with fresnel diffraction on two- dimensional rectangular aperture. the source is located in infinity and the screen is 50 cm away from the aperture. the aperture’s width is 8 mm and the height is 5 mm. wavelength of the light is λ = 632.8 mm (he-ne laser). what is the last visible fresnel zone? • what is the last fresnel zone fully contained in the aperture?

Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground. what is his gravitational potential energy above the ground?

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)