Answer:
2940.1 joules would you burn in climbing stairs all day.
Explanation:
Work = W = F d
going up stairs would be against force of gravity
W = mgh
where h is the height
the question is not complete because we need speed or distance
h = v t
so assuming 1 step per second
h = 86,400 steps 7inchs/step 0.0254 m/inch
h = 15362 m
so from this
W = 800 N 15362
= 12289600 J
that means YOU need 12289600 J to walk 1 step per second all day
divide that by 4180 J /Kcal
Kcal =
=
= 2940.1 Kcal
if you ran faster you would use more energy 2 steps per second would mean 5880 Kcal.
Answer:
-639288.89 N/C
Explanation:
x = 21-6 = 13.5 cm
= 6 cm
= 21 cm
k = Coulomb constant =
The net electric field is given by
The net electric field is
Answer:
518400 Newton
Explanation:
Force F = mass m * Acceleration a
a = velocity v / time t
v = distance d / t
Therefore;
F = m * v² / d
with m = 2000 (unit not defined but say g)
v = 144 Km/h
d = 80 meters =0.08Km
F = 2Kg * 144Km/h * 144Km/h / 0.08Km
F = 518400 Newton