Answer:
A) T1 = 269.63 K
T2 = 192.59 K
B) W = -320 KJ
Explanation:
We are given;
Initial volume: V1 = 7 m³
Final Volume; V2 = 5 m³
Constant Pressure; P = 160 KPa
Mass; m = 2 kg
To find the initial and final temperatures, we will use the ideal gas formula;
T = PV/mR
Where R is gas constant of helium = R = 2.0769 kPa.m/kg
Thus;
Initial temperature; T1 = (160 × 7)/(2 × 2.0769) = 269.63 K
Final temperature; T2 = (160 × 5)/(2 × 2.0769) = 192.59 K
B) world one is given by the formula;
W = P(V2 - V1)
W = 160(5 - 7)
W = -320 KJ
The answers to these questions are:
1. <span>When an individual suffers from anxiety severe enough to DISRUPT HIS DAILY LIFE, he might be suffering from an anxiety disorder.
2. 19 MILLION </span><span>people in the United States suffer from anxiety disorders.
3. I</span><span>f a patient complains that whenever he has to get on a plane he begins to sweat, have chest pain, and nausea, he is most likely suffering from PANIC DISORDER.
4. THAT IT RUNS IN FAMILIES. A lot of researchers and medical professionals believe that anxiety may be hereditary.
</span><span>
5. ANXIETY </span><span>is a state of intense apprehension, uncertainty, and fear resulting from the anticipation of a threatening event or situation.
6. </span><span>A twin is MORE likely to suffer from an anxiety disorder if the other twin has some form of anxiety disorder.
7. </span><span>Generalized Anxiety Disorder (GAD) is characterized by PROLONGED AND EXCESSIVE WORRY EVEN WHEN THERE IS NO APPARENT CAUSE FOR CONCERN.
8. </span><span>Specific Phobia is characterized by EXAGGERATED OR IRRATIONAL FEAR OF OBJECTS OR SITUATIONS THAT ARE NOT GENERALLY HARMFUL.
9. </span>Post-Traumatic Stress Disorder (PTSD) is characterized by <span>FLASHBACKS OR NIGHTMARES.
10. </span>Obsessive-Compulsive Disorder is characterized by OBSESSIVE, IRRATIONAL THOUGHTS THAT INCREASE/INTENSIFY FEELINGS OF ANXIETY.
These answers are based from what I understand from various sources. Hope this helps. :)
It took 50 joules to push a crate 2.5 meters. With what force was the crate pushed?
