PLLLLLLLLLLLLZ HELP 15 POINTS The centripetal force on an object in uniform circular motion is calculated using which formula?
1 answer:
Answer:
Explanation:
The bodies in circular motions experience a force directed towards the center of the circular path called centripetal force.
The force is directed along the radius of the circular path.
The acceleration of the body is also directed along the radius.
The velocity of the rotating body at any instant is directed along the tangent line at the point.
The centripetal force is given by the formula
F = ½ mv²/r
Where,
v²/r = [/tex]a_{c}[/tex] - The centripetal acceleration
The centripetal acceleration can also written in terms of the time period of the rotation,
Hence, the answer is
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Answer:
The peak value of the electric field is 489.64 V/m
Explanation:
Given;
power of the laser, P = 1.0 mW = 1 x 10⁻³ W
Radius of the beam, R = 1.0 mm = 1 x 10⁻³ m
Area of the beam = πr² = π(1 x 10⁻³ )² = 3.142 x 10⁻⁶ m²
The average intensity of the light = P / A
The average intensity of the light = ( 1 x 10⁻³) / (3.142 x 10⁻⁶)
The average intensity of the light = 318.27 W/m²
The peak value of the electric field is given by;
Therefore, the peak value of the electric field is 489.64 V/m.