A child swings on a swing at the playground. The motion of the swing resembles the motion of a pendulum. When is the kinetic energy of the swing the greatest?

at the bottom of the swing

when it reaches the highest point going backward

when it reaches the highest point going forward

It has the same amount of kinetic energy the entire time.

How will the emission of an alpha particle affect the atomic number of an atom

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

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