1) Na figura 1 está representada a configuração de uma onda mecânica que se propaga com velocidade de 20 cm. A frequência da onda, em hertz, vale: * 1 ponto Figura 1 Figura 1 a) 5,0 b) 101) Na figura 1 está representada a configuração de uma onda mecânica que se propaga com velocidade de 20 cm. A frequência da onda, em hertz, vale: * 1 ponto Figura 1 Figura 1 a) 5,0 b) 10 c) 20 d) 25 c) 20 d) 25

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released

What is the source of continuous heat and energy that we receive from the sun