Question
In: Physics
Three 16.75-g Styrofoam balls of radius 2 cm are coated with carbon black to make them...
Three 16.75-g Styrofoam balls of radius 2 cm are coated with carbon black to make them conducting and then are tied to 1.13-m-long threads and suspended freely from a common point. Each ball is given the same charge, q. At equilibrium, the balls form an equilateral triangle with sides of length 29.06 cm in the horizontal plane. Determine the absolute value of q.
Solutions
genius_generous answered 2 years agoRelated Solutions
A box contains three white balls, two black balls, and one red ball. Three balls are...
A box contains three white balls, two black balls, and one red
ball. Three balls are drawn at random without replacement. Let Y1
be the number of white balls drawn, and Y2 the number of black
balls drawn. Find the distribution of Z = Y1 × Y2
Following are three boxes containing balls. Box #1 contains 2 black balls and 1 white ball....
Following are three boxes containing balls. Box #1 contains 2
black balls and 1 white ball. Box #2 contains 2 black balls and 2
white balls. Box #3 contains 1 black ball and 2 white ball. Draw a
ball from Box 1 and place it in Box 2. Then draw a ball from Box 2
and place it in Box 3. Finally draw a ball from Box 3 . What is the
possibility that the last ball drawn, from Box...
There are 2 white balls, 9 black balls and 29 green balls in a box. We...
There are 2 white balls, 9 black balls and 29 green balls in a
box. We draw a ball twice, without replacement. Let X and Y denote
the number of white and black balls, respectively, among the drawn.
Calculate Cov(X,Y).
A 14 g circular annulus of outer radius 41.8 cm and inner radius 26 cm makes...
A 14 g circular annulus of outer radius 41.8 cm and inner radius
26 cm makes small oscillations on an axle through its outer edge
perpendicular to its face.
(a) Find its frequency of oscillation.
(b) Find the frequency of oscillation of a thin ring of the same
outer radius and mass.
(c) Find the frequency of oscillation of a solid disc of the same
outer radius, thickness, and density.
A 12 g circular annulus of outer radius 43.3 cm and inner radius 32.4 cm makes...
A 12 g circular annulus of outer radius 43.3 cm and inner radius
32.4 cm makes small oscillations on an axle through its outer edge
perpendicular to its face.
(a) Find its frequency of oscillation.
(b) Find the frequency of oscillation of a thin ring of the same
outer radius and mass.
(c) Find the frequency of oscillation of a solid disc of the same
outer radius, thickness, and density.
A 11 g circular annulus of outer radius 47 cm and inner radius 35.2 cm makes...
A 11 g circular annulus of outer radius 47 cm and inner radius
35.2 cm makes small oscillations on an axle through its outer edge
perpendicular to its face.
(a) Find its frequency of oscillation.
(b) Find the frequency of oscillation of a thin ring of the same
outer radius and mass.
(c) Find the frequency of oscillation of a solid disc of the same
outer radius, thickness, and density.
Three white and three black balls are distributed in two urns in such a way that...
Three white and three
black balls are distributed in two urns in such a way that each
contains three balls. We say that the system is in state
i,i = 0, 1, 2, 3, if the first urn contains i white balls.
At each step, we draw one ball from each ufn and place the ball
drawn from the first urn into the second, and conversely with the
ball from the second urn. Let Xq denote the state of the...
Three white and three black balls are distributed in two urns in such a way that...
Three white and three black balls are distributed in two urns in
such a way that each contains three balls. We will say that the
system is in state i, i = 0, 1, 2, 3, if the first urn contains i,
white balls. At each step, we draw one ball from each urn – the
ball drawn from the first urn is placed into the second, and the
ball from the second urn is placed into the first. Let...
Suppose we have a sack with 2 red balls and 2 black balls, and we draw...
Suppose we have a sack with 2 red balls and 2 black balls, and
we draw balls without replacement until the second
red ball is drawn.
Describe the random variable ? = "the number of balls
drawn".
Describe by giving the range, probability distribution, expected
value, standard deviation, and variance.
Urn A contains four white balls and three black balls. Urn B contains six white balls...
Urn A contains four white balls and three black balls. Urn B
contains six white balls and seven black balls. A ball is drawn
from Urn A and then transferred to Urn B. A ball is then drawn from
Urn B. What is the probability that the transferred ball was white
given that the second ball drawn was white? (Round your answer to
three decimal places.)
I can't seem to figure this out! Please help! Thank you!
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