The explosions that take place during a fireworks show are an example of which of the following? Image of fireworks exploding in air

Chemical change
Chemical property
Physical change
Physical property

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

Convection currents are caused by differences in what two things?

Determine the largest intensity w of the uniform loading that can be applied to the frame without causing either the average normal stress or the average shear stress at section b–b to exceed σ=19 mpa and τ=24 mpa, respectively.