Answer:
Inertia
Explanation:
The tendency of an object to resist any change in its motion is known as its inertia. The first law of motion is also known as the law of inertia. The inertia of an object can change its speed and the direction of motion. It is related directly to the mass of an object.
A body having more mass will have more inertia while a body having less mas will have less inertia.
B. Neither ultrasonic nor infrasonic vibrations can be heard by humans.
C. Infrasonic vibrations are used in sonar equipment as well as to detect flaws in steel castings.
D. Ultrasonic vibrations have a frequency lower than the range for normal hearing.
the answer is B, Good luck!
B) force
C) energy
D) conductor
Physical properties are properties that you can see, feel and measure, they do not change the matter of the substance. Some examples of physical properties are Mass, Color, Shape, Hardness and Boiling point.
The electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.
The electric field strength (E) at a point near a point charge is given by the equation:
E = k Q / r²
where:
k is Coulomb's constant, equal to 8.99 x 10⁹ Nm²/C²
Q is the magnitude of the point charge in coulombs
r is the distance from the point charge
Substituting the given values:
Q = 12 x 10⁻⁶ C
r = 0.020 m
E = k Q / r²
E = 8.99 x 10⁹ Nm²/C² x 12 x 10⁻⁶ C / (0.020 m)²
E = 2.69 x 10⁸ N/C
So the electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.
Learn more about the electric field strength here:
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