Anybody know how to get minimum wind velocity?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

What happens to an isotope during radioactive decay?

Which describes an object in projectile motion? check all that apply.a.gravity acts to pull the object downb.the object moves in a straight path.c.the forward velocity of the object is 0 m/s.d.the object’s inertia carries it forward.e.the path of the object is curved.