Speed = distance / time
If you input your numbers into this equation you will be able to find the cyclists average speed
Replacement teeth were made even back then out of primitive materials, and pig hair was used like floss
Answer:
110 g
Explanation:
q = mCΔT
where q is heat, m is mass, C is specific heat capacity, and ΔT is change in temperature.
Given q = 250 J, C = 0.228 J/g/°C, and ΔT = 10.0 °C:
250 J = m (0.228 J/g/°C) (10.0 °C)
m = 110 g
Answer:
m = 876.71 kg
Explanation:
This is an exercise of Archimedes' principle, which states that the thrust on a body is equal to the weight of the dislodged liquid
B = ρ g V
therefore the load that the balloon can lift is
B - W_structure - w_load = 0
w_load = B - W_structure
The volume of the balloon is
v = 4/3 π r³
let's substitute
w_carga = rho g 4/3 π r³ - m_structure g
the air density at T = 25ºc is ρ = 1.18 kg / m³
let's calculate
w_load = 1.18 9.8 4/3 π 7.15³ - 930 9.8
w_load = 17705,77 - 9114
w_ load = 8591.77 N
this corresponds to a mass of
w_load = m g
m = w_load / g
m = 8591.77 / 9.8
m = 876.71 kg
