Explanation:
Heat = mc(change in temp.)
m=mass , c = specific heat
Rate of flow of heat = heat current = kA/L(T2-T1)
So, mass = density×volume
So, mc(T2-T1)/time =
kA/L(T2-T1)
Substitute the values given as there are a lot of values missing, so the answer can not be obtained.
Answer:
about 200k years
Explanation:
because we were migrating as cavemans.
Force on the book is 0.25 N
Explanation:
- Force is calculated by the equation, F = Mass × Acceleration
- This is based on Newton's second law of motion, which states that the force on an object is its mass times the acceleration of the object.
Here, mass of the book = 50 g = 50/1000 = 0.05 kg (∵ 1 kg = 1000 g)
Acceleration of the book = 5 m/s²
⇒ Force = 0.05 × 5 = 0.25 N
I believe the answer is B: UV
It is a physical change. One is physically change the wheat from one form to the other.
