Mechanical digestion is chewing, and chemical digestion is the saliva in your mouth breaking down food.
Answer:



Explanation:
From the question we are told that
Electric field of intensity 
Rectangle parameter Width
Length 
Angle to the normal 
Generally the equation for Electric flux at parallel to the yz plane
is mathematically given by



Generally the equation for Electric flux at parallel to xy plane
is mathematically given by



Generally the equation for Electric flux at angle 30 to x plane
is mathematically given by




Remember that the left is NEGATIVE
and RIGHT is POSITIVE
16. +3N - 6N = -3N
therefore 3N to the left (because left = -)
17. +5N - 5N = 0N , zero resultant force
18. +6N - 4N = +2N
therefore 2N to the right (because right = +)
Answer:
When the temperature of the coffee is 50 °C, the time will be 20.68 mins
Explanation:
Given;
The initial temperature of the coffee T₀ = 95 °C
The temperature of the room = 21°C
Let T be the temperature at time of cooling t in mins
According to Newton's law of cooling;

When the temperature is 50 °C, the time t in min is calculated as;

Therefore, when the temperature of the coffee is 50 °C, the time will be 20.68 mins
Convection is the right answer!!!
Ps.: hope this helps!!!!