Physics, 31.08.2019 04:20 anaemigarcia
An electrostatic dust precipitator that is installed in a factory smokestack includes a straight metal wire of length l 0.8 m that is charged approximately uniformly with a total charge 0 0.4x 10-7 c. a speck of coal dust (which is mostly carbon) is near the wire, far from both ends of the wire; the distance from the wire to the speck is d 1.5 cm. carbon has an atomic mass of 12 (6 protons and 6 neutrons in the nucleus). a careful measurement of the polarizability of a carbon atom gives the value c-m n/c î±= 1.96 ã 10-40 (a) calculate the initial acceleration of the speck of coal dust, neglecting gravity. explain your steps clearly. your answer must be expressed in terms of q, l, d and you can use other quantities in your calculations, but your final result must not include them. don't put nun ers into your ca eu n in e very end but then show the numerical calculation that you carry out on your calculator. it is convenient to use the "binomial expansion" that you may have learned in calculus, that ( l + e)" 1 + neä¯s ñ ã i. note that n can be negative. (b) if the speck of coal dust were initially twice as far from the charged wire, how much smaller would be the initial acceleration of the speck?
Answers: 3
Physics, 22.06.2019 08:30
Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.
Answers: 1
Physics, 22.06.2019 11:50
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
Answers: 2
Physics, 22.06.2019 16:40
Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel
Answers: 3
Physics, 22.06.2019 18:30
Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s
Answers: 1
An electrostatic dust precipitator that is installed in a factory smokestack includes a straight met...
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Chemistry, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20
Mathematics, 12.12.2020 16:20