Answer:
When an object vibrates, it causes the molecules in the air around it to move. These molecules collide with nearby molecules, forcing them to vibrate as well. As a result, they collide with more surrounding air molecules.
Explanation:
Answer:
Frictional force opposes relative motion between surfaces
Explanation:
Friction that exists when the object is not moving is called static friction. In static friction ,If we are applying a force in the object the frictional force is in the opposite direction . If it is not the case, there have been some net force and the object starts accelarating.
The main component of the contact force of two objects is normal force and that is in the perpendicular direction. Frictional force is other complnent. This frictional force is parallel to the interface between objects. Frictional force opposes relative motion between surfaces.
D)
<span>No. the products include He-4, one neutron, and energy.</span>
Answer:
The lowest mass that an object can have to be considered a star is 0.08 solar masses.
Explanation:
A star is get when it reaches the necessary temperature in its core to nuclear reaction began.
A Nuclear reaction is the fusion of lighter elements into heavier elements.
In stars there is an equilibrium between two forces, the force of gravity in the inward direction due to its own mass and the radiation pressure in the upward direction as a consequence of the nuclear reaction in its core, which is known as hydrostatic equilibrium.
Therefore, the mass of the star must be enough to the force of gravity act in the inward direction, which leads to the increase in pressure, density and of course temperature in the core, allowing the nuclear reaction to begin.
Hence, the lowest mass that an object can have to be consider a star is 0.08 solar masses.
