How much work is done on a 13 N object that is being lifted onto a shelf 2 meters high?

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?

Why does a collision with an airbag cause less damage than a collision with a steering wheel

Which inventor was often called the lady edison