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anonymous
 one year ago
A sailboat moves north for a distance of 10.00 km when blown by a wind from the southeast with a force of 5.00 × 10^4 N. How much work was done by the wind?
A. 0.00 J
B. 3.54 * 10^5 J
C. 3.54 * 10^8 J
D. 5.00 * 10^8 J
anonymous
 one year ago
A sailboat moves north for a distance of 10.00 km when blown by a wind from the southeast with a force of 5.00 × 10^4 N. How much work was done by the wind? A. 0.00 J B. 3.54 * 10^5 J C. 3.54 * 10^8 J D. 5.00 * 10^8 J

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1here is the situation described by your exercise: dw:1433093509593:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so the requested work is given by the subsequent formula: \[\begin{gathered} W = Fd\cos \ldw:1433093749565:dweft( {45} \right) = 5 \times {10^4} \times {10^3} \times \cos 45 \hfill \\ \hfill \\ \end{gathered} \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the equation you wrote does not show on my side :(

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1oops... \[W = Fd\cos \left( {45} \right) = 5 \times {10^4} \times {10^3} \times \cos 45\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay! so we get 35355339.06?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so our solution is choice C?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! it is 3.54 * 10^8 joules (approximated value)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yay!! :) so onto the next one!! :P
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