Answer:

Step-by-step explanation:
= Mass flow rate of water = 320 kg/s
= Mass of water on the door
= Time
= Velocity of water on the door = 20 m/s
Force is given by

The average force is exerted by the stream of water is
.
The question asks to convert the current decimal number into a fraction in simplest form and the possible answer, base on my ways nad calculating the said decimal, its fractional form is 1/16. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification
Answer:
Fred is 28 yrs old. Nathalie is 12yrs old
Step-by-step explanation:
Let Nathalie's age be x
Let Fred's age be a
x+a=40 yrs•••••1
4x+a=76yrs•••••2
a=40-x
Substitute a for 40-x in equation (2)
4x+40-x=76
3x=76-40
3x=36
x=12
a=40-12
a=28
Answer: B
Step-by-step explanation: A linear function is a straight line, and C and D both are curved.