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slava [35]
1 year ago
5

PLEASE HURRYYYY!!! Explain how you read measurements in a graduated cylinder?

Physics
1 answer:
fredd [130]1 year ago
5 0

Answer:

Reading a Graduated Cylinder

Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder with your eyes directly level with the liquid. The liquid will tend to curve downward. This curve is called the meniscus. Always read the measurement at the bottom of the meniscus.....

hope it helps....

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A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.959 g, q = 5.84 µC is locat
NemiM [27]

Answer:

8.66\times 10^{-6}\ C or 8.66\ \mu C.

Explanation:

<u>Given:</u>

  • Charge on the particle at origin = Q.
  • Mass of the moving charged particle, \rm m = 0.959\ g = 0.959\times 10^{-3}\ kg.
  • Charge on the moving charged particle, \rm q = 5.84\ \mu C = 5.84\times 10^{-6}\ C.
  • Distance of the moving charged particle from first at t = 0 time, \rm r=20.7\ cm = 0.207\ m.
  • Speed of the moving particle, \rm v = 47.9\ m/s.

For the moving particle to circular motion, the electrostatic force between the two must be balanced by the centripetal force on the moving particle.

The electrostatic force on the moving particle due to the charge Q at origin is given by Coulomb's law as:

\rm F_e = \dfrac{kqQ}{r^2}.

where, \rm k is the Coulomb's constant having value \rm 9\times 10^9\ Nm^2/C^2.

The centripetal force on the moving particle due to particle at origin is given as:

\rm F_c = \dfrac{mv^2}{r}.

For the two forces to be balanced,

\rm F_e = F_c\\\dfrac{kqQ}{r^2}=\dfrac{mv^2}{r}\\\Rightarrow Q = \dfrac{mv^2}{r}\times \dfrac{r^2}{kq}\\=\dfrac{mv^2r}{kq}\\=\dfrac{(0.959\times 10^{-3})\times (47.9)^2\times (0.207)}{(9\times 10^9)\times (5.84\times 10^{-6})}\\=8.66\times 10^{-6}\ C\\=8.66\ \mu C.

6 0
3 years ago
How do you put 0.0015kg in scientific notation
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0.0015 kg would be 1.5*10^-2 kg in scientific notation


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Atoms giving up valence electrons indicates that an ionic bond is present ture or false
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1) Which is an example of two-dimensional motion?
telo118 [61]

Answer: C

Explanation:

A bird flying in the air is 3D motion as the bird move up, down, right, left all the possible direction. A leaf falling from a tree is also a 3D motion because a leaf never fall in absolute vertical manner. A lady bug crawling on a soccer ball also 3D. If lady bug crawling on a plane like floor then it is 2D but now lady bug crawling on soccer ball which is in spherical shape so it is also 3D motion. Only train travelling along a track is 2D because train cannot move up and down and the track of train is in a plane. So it is 2D motion.  

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