What is the electric charge of 0.44 of a mole (NA = 6.023 × 1023) of alpha particles (ionized helium ions, He2+)? Express your answer in kilocoulombs, rounded to one decimal place.

Figure 4 shows a section of a long, thin-walled solid infinitely long metal tube of radius R = 5.00 cm , with a charge per unit length of λ = 2.00 ×10−8C/m . What is the magnitude of the electric field at radial distance

A typical AA size rechargeable NiMH battery can store 1100-2100 mAh of electric charge. The small print on the battery in your hand says 1530 mAh. Can you express this amount of electric charge using the usual coulomb units? You are now charging a camera battery. The charger moves 4470 C of electric charge from the negative terminal of the battery to the positive terminal. (In reality the charger moves the negative electrons from the positive terminal to the negative terminal, but this is not important for us right now.) Assuming - incorrectly - that the voltage of the battery remains a constant 3.20 V during the whole charging process, determine the work done by the charger. And now you are charging a capacitor bank for a high-voltage physics experiment. The power supply moves Q = 8990 C of electric charge in the charging process. The supply is set to stop, when the voltage reaches AV = 710 V. How much work did the power supply perform?

A spherical conductor with radius 4.00 mm carries a charge of 24.5 μC . What is the electrical field strength at 6.00 mm from the center of the conductor?( Take Coulomb's constant 9x109Nm2C-2 ).Write your answer in multiples of 109 N/C. That means if, for example, you get a result of a 9.2 x 109 just type 9.2 in the answer box.Your result must contain at least one figure after the decimal point. Maximum of 5% of error is accepted in your answer.