What is the energy of an electromagnetic wave that has a frequency of 5.0 x 10 ^ 5 Hz ? Use the equation E = hf, where h = 6.626 x 10 ^ - 34 J•s

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f. s. = 2 against bucklin

More solar radiation is absorbed by earth’s surface than by

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel