A thermionic tube with only a cathode and anode is called​

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

The density of a liquid could be found by using

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?