An airplane starts from rest, and accelerates down a runway at 3.2 m/s2 for 22 s before it lifts off the ground. How far did the airplane travel on the runway before liftoff?

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?