because ultrasound is not radiation
an arc is a segment of a circle. If the arc subtends a full angle of 360 degrees, then the arc is a circle; but this is a special case of an arc.
Arc measure is the number of radians. Two similar arcs could have the same arc measure. Arc length is particular to the individual arc. One must consider the radius of the arc in question then multiply the arc measure (in radians) times the radius to get the length.
major arc
arc homophone is ark
Yes, rays can be dangerous as some species have venomous spines that can cause painful stings or serious injuries if stepped on or disturbed. It's important to avoid touching or provoking rays in the wild to prevent any potential harm.
True.
Long term exposure can be dangerous.
the dangerous one
Yes.
Yes.
Yes, of course.
X-rays have lower energy, though they are both dangerous.
the dangerous one
They can be, yes.
what blocks some of the dangerous rays that may cause skin cancer
It is a rainbow