Recent content by joehoy41

I guess my real question is do I just need to make sure that 1000W of power reaches a 1m^2 surface to achieve an irradiance of 1000/m^2? Putting aside efficiency and diffusion of light, if I had 5 lamps each producing 200W laid out evenly in a 1 meter squared area, does that achieve what I need?

I am trying to design a simple homemade PV solar simulator. I have picked metal-halide lamps as my light source. If the PV panel has an area of 1m^2 and I wanted to achieve spatial uniformity across the irradiated surface with an irradiance of 1000 W/m^2, how do I go about selecting what...

where did u get 4187?

Vav = (Df - Di)/t Aav = (Vf - Vi)/t Vf = Vi + gt Vf = -sqrt(Vi^2 - 2gd) d= 0.5(Vi + Vf)t d = Vit + 0.5gt^2 avgt = (Vf - Vi)/g t = sqrt((2d)/g) g = 9.81 m/s^2

i am sure that is the question...

Can someone pleasez help me

there are a lot.. but i only want to know what does this mean "A camera falls from a blimp that is 349 m above the ground and rising at a speed of 17.2 m/s." can u give me a simple explanation of what they are saying?

A camera falling from a blimb... pleasezzz help (part 1 of 2) A camera falls from a blimp that is 349 m above the ground and rising at a speed of 17.2 m/s. Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s^2 Answer in units of m...