Big Test Prep Questions (3 of 3)

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The discussion centers on a review test where the user struggles to recall earlier material. A specific problem involving the Hindenburg's air drag force is presented, requiring calculations based on its speed and engine power. The conversion of units is highlighted, with the final answer for the drag force being 90.3 kN. The relationship between power, force, and velocity is emphasized as crucial for solving such problems. The user expresses embarrassment for overlooking the formula but appreciates the assistance received.
Tom McCurdy
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Alright we are having a review test and I needed to go back to the stuff we did earlier this year and I am having some trouble remembering what to do...
:shy: how can i forget this stuff you ask... I don't know


The hydrogen-filled airship Hindenburg could curise at 77 knots with the engines providing 4800 hp. Calcualte the air drag force in Newtons on the airship at this speed.

For convince
77 knots = 39.6122 m/s
4800 hp = 3.57936*10^6


Answer:90.3 kN
 
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Do you know how power is related to velocity ? Look up the relation. That should give you the answer.
 
Power=Force*velocity

P=W/t
 
Forgive me for even asking that question...

I should fail for that alone. I looked right over the forumula... usually are problems arent' this easy thanks for the help
 
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