3. A jumbo jet taxes down the runway, accelerating at a rate of 7.4 m/s2 until it reaches its take-off velocity of 81 ms. If the jet begins from rest, how long will it take to reach its take-off velocity of 81 m/s?

Asimply means that over time there was some sort of change.

What is created when solids, liquids, an gases mix with one another

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?