Answer:
17.71N/m
Explanation:
The period of the spring is expressed according to the expression;

m is the mass of the object
k is the force constant
Given
m = 5.50kg
T = 3.50s
Substitute into the formula;

Hence the force constant of the spring is 17.71N/m
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

The gravitational potential energy of the weight changes to motion energy when the weight moves down and the paddle wheel spins. The motion energy changes to thermal energy, causing the water’s temperature to rise.
(fast explanation for my fellow edmentum kids :))
Applying the Newton Second Law of motion that is F=ma
We have F=395.2N (North) and m=259.1Kg
Putting these values in the equation
395.2 = 259.1 x a than
for a = 395.2/259.1
a = 1.525 m/sec 2
D. and it’s not 23 points it’s 12