20 degrees F! 0 degrees C is equivalent to 32 degrees F, so 20 degrees F is colder.
It can’t be created nor destroyed although it can be changed from one form to the other
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Answer:
Explanation:
Given
Initial angular velocity 
Initial speed 
Coefficient of kinetic friction 
As No external torque is applied therefore angular momentum is conserved


For rolling without slipping 



acceleration provided by surface



Speed of ball after 
using 
v=final velocity
u=initial velocity



thus 

Answer:
1.865 * 10^-4 L
Explanation:
The equation of the reaction is:
4OH^-(aq) ----->2H2O(l) + O2(g) + 4e
Since one mole of oxygen which occupies 22.4 L is produced in the electrolysis of water by 4 Faraday of electricity as shown in the equation above;
Then;
4 * 96500 C liberates 22.4 L of oxygen
60 * 60 * 0.0200 C will liberate 60 * 60 * 0.0200 * 22.4/4 * 96500
= 1.865 * 10^-4 L