A cannon ball is launched from 58m/s [57.5° above the horizon]. The cannon is located on a platform some distance from the ground, if the cannon lands 335m from the base of the platform, what is the height or the platform, abs how high did the cannon go?

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?

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is