Asolar cell has an open circuit voltage value of 0.60 v with a reverse saturation current density of jo = 3.9 × 10−9 a/m2 . the temperature of the cell is 27◦c, the cell voltage is 0.52 v, and the cell area is 28 m2 . if the solar irradiation is 485 w/m2 , determine the power output and the efficiency of the solar cell.

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors