O cantitate v=1 mol de gaz ideal evoluează. in starea iniţială volumul ocupat de gaz
este V1=8,31 L şi temperatura acestuia este T1=831 K. Să
se afle:
a. constanta de proporţionalitate dintre presiune şi volum
b. volumul final ocupat de gaz, dacă acesta se destinde
până la presiunea p2=2pi
c. temperatura finală a gazului în condiţiile punctului b

Aseries circuit consists of a resistor with r = 20 ? , a capacitor with c = 0.01 f, and a decaying battery with e = 300e? 5t. if the initial charge is 0, find the charge as a function of time t

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?