<span>2π/T = 2π/10 = π/5
y(x) = A sin (wx) = 0.75 sin (πx/5)
y(4) = 0.75 sin (4π/5) = 0.4408389392... ≈ 0.441</span><span>
</span>
The object that goes through chemical change, changes completely to where you can not change it back to its original form. Physical change you can undo
I think the toaster was invented in 1910
