Answer:
False
Explanation:
Let the initial amount is No.
Let t be the half life.
Half life is the time in which the initial amount of the substance becomes half and the remaining amount in teh sample is also half.
After one half life, the remaining amount is No / 2
After two half lives, the remaining amount is No / 4
After three half lives, the remaining amount is No / 8.
So, the statement is false.
Answer:
E) the flow of energy due to a temperature difference.
Explanation:
Heat can be described as the flow of energy due to a temperature difference.
Which is expressed mathematically as;
H = MCΔT
Where;
H is the quantity of heat in a body, measured in Joules
M is the mass of the body, measured in kg
C is the specific heat capacity of the body, J/kg.K
ΔT is change in temperature or temperature difference.
So, heat energy in any system flows from a hotter region to a colder region due to temperature difference.
E) the flow of energy due to a temperature difference.
It might be pull at a force of 100 N. I might be wrong.
Answer:
Velocity
Explanation:
The gradient= change in velocity
——————————
Change in time
Use Graphite on the wheel bearings and make an aero dynamic body and place the balloon at the back
