pls help asap?

A 65.0 Kg person drinks a thick, rich, 250 –C milkshake. How many stairs must this person climb to work off the shake? Let the height of the stair be 10.0 cm. 

choose one : 

Number of stairs = 1500.8 stairs

Number of stairs = 8815.3 stairs

Number of stairs = 16411.8 stairs

Number of stairs = 2500.8 stairs

3 Answers

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  • NCS
    Lv 7
    1 month ago

    250Cal * 4186J/Cal = 1.05e6 J

    and we need to convert that into GPE:

    GPE = mgh

    so

    1.05e6 J = 65.0kg * 9.81m/s² * h

    h = 1640 m

    At 10.0 = 0.100 m per stair, that's 16,400 stairs.

    Hope this helps!

  • 1 month ago

    you need the size and number of calories in the shake. 

    what does –C mean?

  • oubaas
    Lv 7
    1 month ago

    Energy E = 250*4186 joule

    n = 10*E/(m*g) = 2500*4186/(65*9.806) = 16,400 with just three significant figures

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