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
- NCSLv 71 month ago
250Cal * 4186J/Cal = 1.05e6 J
and we need to convert that into GPE:
GPE = mgh
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!
- billrussell42Lv 71 month ago
you need the size and number of calories in the shake.
what does –C mean?
- oubaasLv 71 month ago
Energy E = 250*4186 joule
n = 10*E/(m*g) = 2500*4186/(65*9.806) = 16,400 with just three significant figures