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Why is ultrasound less dangerous than x rays?

because ultrasound is not radiation


What is the name of a central angle?

A central angle is an angle whose vertex is at the center of a circle and whose sides (or rays) extend to the circumference, effectively subtending an arc on the circle. The measure of a central angle is equal to the measure of the arc it subtends. For example, if the central angle measures 60 degrees, the arc it subtends will also measure 60 degrees.


How to bisect an angle using compass and ruler?

To bisect an angle using a compass and ruler, start by placing the compass point on the vertex of the angle and drawing an arc that intersects both rays of the angle. Label the points where the arc intersects the rays as A and B. Next, without changing the compass width, place the compass point on point A and draw an arc inside the angle. Repeat this step from point B, creating two intersections of the arcs. Finally, use the ruler to draw a straight line from the vertex of the angle through the intersection of the two arcs, which will bisect the angle.


Is a circle an arc?

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.


What causes arc blasts?

Arc blasts are caused by electrical faults, typically when a high-voltage current creates an electrical arc between conductive materials. This sudden release of energy generates intense heat and pressure, resulting in an explosive force that can propel molten metal and debris. Factors such as equipment failure, poor insulation, or human error can trigger these dangerous events. Proper maintenance and safety protocols are essential to prevent arc blasts in electrical systems.