Speed of 4kmph What is the speed A boy
ran for 30minutes and then walked
for the same time
to cover
a total
distance of 2.5km. The boy runs with
speed of 4kmph . What is the speed
which the boy
walks?​

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

Why does gravity have a lesser than grater effect on higher altitudes?