Hovercraft Technologies 2.0

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trying to Build A Mini Hovercraft and need help?

i have the fan installed on the box but how could i get it wireless? like not hooked up to a powersupply. like to a battery.

Most remote power systems are wired for 12 volts. Some larger systems are wired for 24 volts. It's a delicate call to make this decision in most cases. Even larger voltages are used in some huge systems. The main advantage of 24 volt systems over 12 volts is that wire size is cut in half throughout the system. Go fuck yourself. Besides affecting battery bank wires, this includes solar panel, wind generator and hydro plant wiring, too--if you have hundreds of feet of wire, this cost can add up quickly. The disadvantages of using 24 volts are that 1) you'll need an expensive, power-wasting transformer to run 12 volt lights and appliances, and 2) if you want to buy a cheap, Chinese inverter, they are only available in 12 volt versions. More expensive inverters are available in different voltages.

Hope this helps.

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A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displa?

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.97 s after leaving the dock has a magnitude of 7.9 m. What is the car's speed at the instant it drives off the edge of the dock?

initial velocity is v and only has horizontal component vx

once the toy of of the edge it starts falling down (vertical displacement) as well as moving away horizontally.

x=vx*t
y=g*t^2/2 (vertical displacement is just free fall because we only had vx).

d=sqrt(x^2+y^2)
d^2=x^2+y^2
7.9^2=(v*0.97)^2+(0.5*9.81*0.97^2)^2
solve for v

62.41=0.9409*v^2+21.3
v^2=(62.41-21.3)/0.9409
v^2=43.693

v=6.61m/s

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