Generic Mini LED RGB Crystal Magic Ball Effect light DMX Disco DJ Stage Lighting

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Led Ball 20 Cm Popular Q&A

Q: What is the space occupied of a 20cm in diameter metal ball?
A: Volume of a sphere = 4/3*pi*radius. 3. Volume (space occupied) = 4/3*pi*10. 3. = 4188.790205 or 4189 cubic cm to 4 sig fig. Read More »

Q: What is the density of ball that has a mass of 6.57 g and has a v...
A: density is mass over volume so its 6.57/45.2=0.145g/cm^3. Read More »

Q: How fast is the surface area of the ball increasing when the radi...
A: From the formulas, V = (4/3)PiR^3 and A = 4PiR^2, we have. dV = 4PiR^2dR. dA = 8PiRdR. and so dV/dA = R / 2. Then we have dA/dt = (dV/dt) / (dV/dA) = 50 / (R / ... Read More »

Q: How to Make a Spinning RGB LED Ball.
A: 1. Strip a 1/2 inch of insulation from the ends of the two wires attached to the battery snap, and from the ends of the wires attached to the LEDs with a wire s... Read More »

Q: What is the force with which a circular ball of radius 20 cm and ...
A: Posted by lxsptter on November 7, 2011 at 2:03 PM via web and tagged with buoyancy physic physics science 1 Answer | add yours justaguide College Teacher (Level... Read More »