The relation between temperature and pressure is called the "equation of state of the gas". or "Hydrostatic equilibrium in ordinary star". Take for example a balloon, it will have a larger spherical shape, if the pressure inside exerted by the gas on a wall of a balloon balance the inward force exerted by the outside atmospheric pressure. In a dying star which is being compressed by gravity, the gas is being squeezed so the molecules is moving rapidly, resulting to a very high temperature, and this provide a balance that counteract or balances the compressive force of gravity. The very high temperature inside the star is needed to balance the force of gravity, and it is provide by "nuclear fusion energy" or else the star would collapse under the force of gravity. Depending on the size or mass of the star, it will either become, a "neutron star" or a "black hole".
Atoms have an overall charge that is neutral because atoms have equal number of positive protons and negative electrons thus they cancel each other out. This always true for atoms that are stable and in equilibrium.
Answer:
Lenses produce images through REFRACTION but mirrors produce images through REFLECTION.
CONVEX lenses and CONCAVE mirrors focus light at a point. CONVEX mirrors and CONCAVE lenses spread light apart.
Explanation:
Refraction guides the image formation for lenses. Light rays are bent or refracted at both surfaces of the lens as they pass through it. With this, various effects can be obtained by focusing light rays on different range of curvatures of the lens.
Reflection guides the formation of images by plane and curved mirrors. Light rays change direction as they travel through a continuously changing medium. The law of reflection states that the angle of reflected ray is equal to the angle of incident ray upon reflection from a smooth surface.
A convex lens is curved outward causing the parallel light rays passing through it to be refracted inward. They meet at a focal point and focuses light at a single point likewise concave mirror.
A concave lens is curved inwards and light rays passing through it are refracted outward, spreading light apart which is also an action of convex mirror.
The mass of the object doesn't matter. The change in its momentum is equal to the impulse that changed it ... 15 N-sec.
The greater the change in velocity, or speed.
