A150 g ball and a 240 g ball are connected by a 33-cm-long, massless, rigid rod. the balls rotate about their center of mass at 150 rpm . part a what is the speed of the 150 g ball? express your answer to two significant figures and include the appropriate units

The speed of the 150 g ball rotating about its center mass is 3.2 m/s.

The given parameters;

The angular speed of the balls in radian per second;

The length of the second  mass is calculated as follows;

The speed of the 150 g ball is calculated as follows;

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v= 3.18 m/s

Explanation:

Given that

m= 150 g = 0.15 kg

M= 240 g = 0.24 kg

Angular speed ,ω = 150 rpm

The speed in rad/s

ω = 15.7 rad/s

The distance of center of mass from 150 g

r= 20.30 cm

The speed of the mass 150 g

v= ω r

v= 20.30 x 15.7 cm/s

v= 318.71 cm/s

v= 3.18 m/s

50 inches should be the resultant vector

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia