If oxygen and steel wool are combined is it a physical change or chemical change?

Vitamins A, D, E, and K are examples of A water-soluble vitamin. B dry vitamins. C fat soluble vitamins.

What is an astronomical unit (AU) ?

What force is necessary to accelerate a 70-kg object at a rate ifm4.2 m/s

The process in which light travels through an object is called

An example of an unbalanced force is

Consider the moment when the spring is at its maximum compression. At that moment, the kinetic energy, the gravitational potential energy, and the elastic potential energy are, respectively, a - zero, at a maximum, and at a maximum b - at a maximum,

Ari, a young patient who is regularly treated by a psychiatrist, feels compelled to carry out repetitive tasks the same way very frequently. If Ari does not conduct these tasks with extreme precision, he can feel extremely nervous and uncomfortable.

A friend says, "Stars produce energy by a fusion chain reaction of helium into hydrogen." Evaluate the validity of this statement. A) It is an valid statement. Stars produce energy by a fusion chain reaction of hydrogen into helium.

If the mass of a material is 42 grams and the volume of the material is 15 cm^3, what would the density of the material be? answer: Unit:

35. An object of mass m moving at speed v0 strikes an object of mass 2m which had been at rest. The first object bounces backward along its initial path at speed v0.