Answer:
222.2N/m
Explanation:
Given parameters:
Elastic potential energy = 4000J
Extension = 6m
Unknown:
Spring coefficient = ?
Solution:
The elastic potential energy is the energy stored within a string.
It is expressed as;
EPE = k e²
k is the spring constant
e is the extension
4000 = x k x 6²
8000 = 36k
k = 222.2N/m
Answer:
See the explanation below.
Explanation:
We have to take into account that the potential difference is equal to the voltage, and this is measured between two points as the resistors are connected in parallel to the voltage source, the resistors will have the same voltage.
For ease, we will take the attached image of resistors connected in parallel.
As both resistors at their ends share the A & B connection points, these are at a voltage of 12V
Answer:
a)
b)
c) dP = 0 Pa
Explanation:
The specifies equation is :
Note that:
1% increase in temperature at specific volume:
a) Change in pressure of helium at constant volume:
R = 2.0769 kJ/kg-K
dT = 3.5 K
v = 0.75 m³/kg
b)
dv = (1%/100%) *0.75
dv = 0.0075 m³/kg
Change in pressure of helium at constant temperature:
R = 2.0769 kJ/kg-K
T = 350 K
v = 0.75 m³/kg
dv = 0.0075 m³/kg
c) The change in pressure of helium :
dP = 9.692 - 9.692
dP = 0