Answer:
Approximately 
.
Explanation:
It is given that 
and 
are connected in a circuit in parallel.
Assume that this circuit is powered with a direct current power supply of voltage 
.
Since 
and 
are connected in parallel, the voltage across the two resistors would both be . Thus, the current going through the two resistors would be 
and 
, respectively.
Also because the two resistors are connected in parallel, the total current in this circuit would be the sum of the current in each resistor: 
.
In other words, if the voltage across this circuit is , the total current in this circuit would be . The (equivalent) resistance 
of this circuit would be:
.
Given that and :
.
<h2>
Answer:</h2>
105146 Pa
<h2>
Explanation:</h2>
1) We will make a Free-Body Diagram representing all the upward and downward pressures exerted on the piston.
- Pressure exerted by the compressed spring (Pspring)
- Pressure due to weight of the piston (Pw)
- Atmospheric pressure (Patm)
- Initial pressure inside the cylinder. (P1)
2) We will formulate an equation balancing all upward and downward pressures.
P1= Patm + Pw + Pspring
3) We will calculate each of the pressures separately.
P = F/A
F= ks
k= 38×1000 =38000 N m
s= 2.5 /1000 = (2.5x10^-3) m
F = 38000×(2.5x10^-3) = 95 N
A = 30/10000 = (30x10^-4) m2
P = 95 / (30x10^-4)
Pspring ≅ 3167 Pa
P = F/A
F = W = mg
W = 2×9.81 = 19.62 N
A = 30/10000 = (30x10^-4) m2
P = 19.62 / (30x10^-4)
Pw = 654 Pa
P = 1atm = 101325 Pa
Patm = 101325 Pa
4) We will add all the downward pressures to reach the final answer (initial pressure inside the cylinder).
P1= Patm + Pw + Pspring
P1= 101325+654+3167
P1= 105146 Pa
Answer:
Oxidative phosphorylation
Explanation:
This takes place mostly in the organelle called the mitochondrion.
Oxidation of nutrients in cells by enzymes results in the release of the chemical energy present in the molecular energy.
The NADH and succinate products of the citric acid cycle are also oxidized. All this series of reactions takes place in the Electron transport system.The energy from the oxidation is used to produce adenosine triphosphate (ATP) hence the name oxidative phosphorylation.
