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When the particle is suspended motionless its weight is in equilibrium with the force applied on through the electric field. Thus
From this equality we can deduce the charge of the droplet necessary for the particle to stay suspended:
where m is its mass and E is the electric field that is applied.
How can my answer be incorrect if I haven't even figured it out yet ? ?
The volume of a cylinder is (pi) (radius²) (height, length, or depth).
The pool's diameter is 8m, so its radius is 4m .
The volume of the pool is (pi) (4m)² (1.6 m) = 25.6 pi m³ .
Filling it at the rate of 11 m³/hr, it will take
(25.6 pi / 11) = 7.308... hours to fill it to the brim.
Rounded to the nearest hour, that's 7 hours.
<u>Answer:</u> The focal length of makeup mirror is 0.3448 m.
<u>Explanation:</u>
We are given:
m = 1.5
u = -11.5 cm
To calculate the image distance, we the equation for mirror:
Putting values in above equation, we get:
To calculate the focal length of mirror, we use the mirror formula, which is:
Putting values in above equation, we get:
Negative sign represents the position of focal length.
Converting the focal length into meters, we use the conversion factor:
1 m = 100 cm
So, 34.48 cm = 0.3448 m
Hence, the focal length of makeup mirror is 0.3448 m.
Answer:
C is the correct answer, 35m/s
Explanation:
This is so because speed doesn't have direction, it is a scalar. Vectors such as velocity do.