The horizontal distance between the person’s eyes and the building is 95.2 m. in part a the person is looking at the base of the antenna, and his line of sight makes an angle of 30.4o with the horizontal. in part b the person is looking at the top of the antenna, and his line of sight makes an angle of 33.8o with the horizontal. how tall is the antenna?

In what direction does the medium move relative to the direction of the wave? explain.

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm