Answer:
Explanation:
The resistance increases linearly with the temperature - so we can write:
where
is the change in resistance
k is the coefficient of proportionality
is the variation of temperature
In the first part of the problem, we have
So the coefficient of proportionality is
When the resistance is 
, the change in resistance with respect to the resistance at zero degrees is
So we can find the change in temperature as:
So the new temperature is
Answer:
j
Explanation:
x = 4 t^2 - 2 t - 4.5
Position at t = 3 s
x = 4 (3)^2 - 2 (3) - 4.5 = 25.5 m
Velocity at t = 3 s
v = dx / dt = 8 t - 2
v ( t = 3 s) = 8 x 3 - 2 = 22 m/s
Acceleration at t = 3 s
a = dv / dt = 8
a ( t = 3 s ) = 8 m/s^2
When is the velocity = 0
v = 0
8 t - 2 = 0
t = 0.25 second
When is the position = 0
x = 0
4 t^2 - 2 t - 4.5 = 0
t = 1.4 second
Answer:
11.6 s
Explanation:
We can use equation of motiom to solve this
B.
prokaryotic because prokaryotic cells lack a nucleus and membrane-bound structures.
