The earth is cooled and its atmosphere is heated by terrestrial radiation.
Answer:
= 11.8 Ω
Explanation:
Using the equation;
RT = Rr [1 + α (T -Tr)
Where;
RT = Resistance of conductor at temperature T
Rr = Resistance of conductor at reference temperature Tr
α = Temperature coefficient of resistance at reference temperature Tr
Therefore;
RT = 10 Ω [ 1 + 0.004( 65-20)]
= 10 ( 1 + 0.004(45))
= 11.8 Ω
Answer:
15000N/m²
Explanation:
Given parameters:
Weight = 450N
Total area = 0.03m²
Unknown:
Pressure under her feet = ?
Solution:
Pressure is the force per unit area on a body.
Pressure =
Weight is a type of force;
Pressure = = 15000N/m²