DOK 3 (504 may, for time sake omit this section) 9. A 22,000 kg jet aircraft is launched off an aircraft carrier on a
catapult having a distance of 90 meters. The launch over that
distance occurs in 4 seconds time and ends up with a final velocity off
the carrier deck of 70 m/s. What was the force required by the catapult
to launch the Jet?

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

Will you chech and finish these for me, because i am stumped with them.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.