When you heat something of cool it down you don't change the substance you might change the why is looks, but it is still the same substance. For example you cool water to 0 degrees Celsius it turns into ice but it still is two parts hydrogen and one part oxygen H2O. Physical changes will change state and/or form but it will still be what it originally was on the molecular level. Hope that helped.
A. Coming out near the South Pole and going in near the North Pole
Gravitational potential energy = mass × gravity × height
Ep = (4)(9.81)(3)
Energy = 117.72 Joules
= 1.2x10^2 Joules
These are connective tissues,which plays in structural support and the one that holds bones together.ligaments are one crucial of it,it is made of densely packed collagen fibers that connect bone to bones
It's what I eat in my cereal everyday,Jk
Nuclear energy creates nuclear waste
nuclear energy creates nuclear bombs
their is nuclear energy plants that produce lots of electricity
and too much nuclear energy causes cancer
their is nuclear energy in the air but not enough to hurt you
