Uniform electric field in the area between the plates
The potential difference among the accelerating plates of a TV set is around 30 kV. When the distance among the plates is 1.6 cm, determine the magnitude of the uniform electric field in the area between the plates.
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A potential difference of around 90 mV exists among the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. Determine how much work is needed to eject a positive sodium ion (Na+) from the int
A metal sphere having radius 5.00 cm is primarily uncharged. Determine how many electrons would have to be positioned on the sphere to generate an electric field of magnitude 1.49 x 105 N/C at a point 7.22 cm from the center of sphere?
The heights of students is distributed with mean of 70 inches and standard deviation of 2.8in. 25 students are chosen, find out the probability that the height of them will average above 72.
The student starts to walk directly toward the screen at 3.00m/s. The central maximum on the screen is stationary. Determine the speed of the first-order maxima on the screen.
Thirty students recorded colors of their eyes, selecting from colors brown, blue, green, hazel, and black. This data can be appropriately summarized in
A 4 kg block resting on a frictionless horizontal ledge is joined to a string which passes over a pulley and is joined to a hanging 2 kg block. The pulley is a uniform disk of radius 10.0 cm and having mass 0.70 kg.
In 1995, populatoion of the country was evaluated at 4 million. For any subsequent year population P(t)= 240/5+54.99e-0.0208t where t is number of years since 1995. Evaluate population in 2008.
Compute the probability of event A, P(A). Calculate the conditional probability of event A given B, P(A|B). Write your answer as a fraction. Are A and B independent events?
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