Answer:
it's answer is B.
Step-by-step explanation:
you're welcome:)
461 because you take 506-45 to find x(the unknown number)
Answer:
k = - 6.6667
Step-by-step explanation:
this is quite very simple to begin. I would encourage you take other practice questions similar to help with understanding it.
let us begin.
Given that ;
dT/dt = k ( Tm - T) where Tm is the temp of the medium
dT/dt = 5 degrees Celsius per minute when T = 70
so we have that, 5 = k ( 25 - 70)
remember to convert 5 degree celsius per minute to seconds
we have that;
5*60(sec) = k ( 25 - 70)
k = 5*60 / ( 25 - 70)
k = - 6.6667
note K is negative because we consider it for cooling process (temp decreasing).
cheers i hope this helps!!!
3w-13w=-20
Combine like terms
-10w=-20
divide both sides by -10
w=2
w = mg
w/m = g
69N / 12kg = 5.75 N/kg
<u>Answer: B) 5.75 m/s2</u>
