A spring has a natural length of 10 cm. It takes 9 J to stretch the spring to 17 cm. How much work would it take to stretch the spring from 17 cm to 24 cm

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

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.