A vertical tube 1.34 m long is open at the top. It is filled with 44.2 cm of water. If the speed of sound is 344 m/s, what willthe fundamental resonant frequency be

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader