Answer:
Explanation:
As we know that 1 lb fat can be used to expend 4.1 k Calorie of energy
so here we know that we have to use 7.56 lb of body fat
so here the total energy that is to be utilized is given as
so we will have
now we know that runner expends the energy at rate of 1850 kJ/h
so we have
so it is
now we know that time to burn this energy is given as
Answer:
N2- N1 = V g
Explanation:
Let's use for this exercised the equilibrium relationship
∑ F = 0
N -W = 0
N = W = mg
Let's use density redefinition
ρ = m / v
m = ρ V
N₁ = (ρ V) g
Repeat for when the liquid is submerged, in this case an upward thrust appears as a result of the water dispensed (rgow)
N₂ + B - W = 0
N₂ = W - B
B = g
= m / V
=
V
N = ρ V g - Vg
N2 = N1 + V g
N2- N1 = V g
