1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisov135 [29]
3 years ago
7

A small sphere with mass 5.00×10−7 kg and charge +8.00 μC is released from rest a distance of 0.500 m above a large horizontal i

nsulating sheet of charge that has uniform surface charge density σ = +8.00 pC/m2.
Using energy methods, calculate the speed of the sphere when it is 0.100 m above the sheet.
Physics
1 answer:
Damm [24]3 years ago
6 0
<span>Work done on charge is W = Eqd = σ/(2ε₀) x q x d = {(8.00 x 10⁻¹²)/(2 x 8.854187 x 10⁻¹²)} x 3.00 x 10⁻⁶ x (0.650 - 0.250) = 5.42116402J. KE of sphere = 0.5mv² = 0.5 x 5.00 x 10⁻⁷v² = work done by E-field on charge during its fall = 5.42116402→ v = 4657 m/s.</span>
You might be interested in
Point charges of 21.0 μC and 47.0 μC are placed 0.500 m apart. (a) At what point (in m) along the line connecting them is the el
rewona [7]

Answer:

a) x = 0.200 m

b)E = 3.84*10^{-4} N/C

Explanation:

q_1 = 21.0\mu C

q_1 = 47.0\mu C

DISTANCE BETWEEN BOTH POINT CHARGE = 0.5 m

by relation for electric field we have following relation

E = \frac{kq}{x}^2

according to question E = 0

FROM FIGURE

x is the distance from left point charge where electric field is zero

\frac{k21}{x}^2 = \frac{k47}{0.5-x}^2

solving for x we get

\frac{0.5}{x} = 1+ \sqrt{\frac{47}{21}}

x = 0.200 m

b)electric field at half way mean x =0.25

E =\frac{k*21*10^{-6}}{0.25^2} -\frac{k*47*10^{-6}}{0.25^2}

E = 3.84*10^{-4} N/C

6 0
3 years ago
Read 2 more answers
HELP! What are 5 changes that a fidget spinner can be?
noname [10]

Answer:

I would hope they can change this question

6 0
3 years ago
According to the periodic table, the average atomic mass of helium is
vfiekz [6]

Helium has an atomic mass of 4.00 atomic mass units.

8 0
3 years ago
The last "hot house" or period of increased temperature occurred _____.
xxMikexx [17]
When there was know life on the earth
3 0
3 years ago
"If there were no atmosphere, the tiny molecules of gases and dust particles in the air break up and scatter the light of the su
ELEN [110]

if there was no atmosphere,the tiny molecules of gases and dust particles will gather together and rain down while the sun shine on the particles making the color glow because the colors are combining into various of colors looking like the galaxy.

5 0
3 years ago
Other questions:
  • You eat an apple, so what energy transformations will it go through?
    8·2 answers
  • Kelly carried a box weighing 10 N the 200 meters from his car to his new house.  George took the box from Kelly and carried it u
    5·2 answers
  • List some activities that influence health-related fitness
    11·1 answer
  • Help with this please
    8·1 answer
  • The video shows a collapsing cloud of interstellar gas, which is held together by the mutual gravitational attraction of all the
    11·1 answer
  • You have a radioactive sample with a half-life of 1 hour. At t = 1 hour, a Geiger counter measures its radiation at 40 counts/mi
    6·1 answer
  • Helloooooooooooo<br><br><br> A) HI<br><br> B) GO AWAY<br><br> C) BYE FELICIA<br><br> D) HELLO MATE
    13·1 answer
  • Why is it important that radioisotopes used in diagnostic tests have short half-lives? 20 A) These radioisotopes have a greater
    12·1 answer
  • A pallet of bricks is to be suspended by attaching a rope to it and connecting the other end to a couple of heavy crates on the
    6·1 answer
  • Rebecca heated 50mL of water from 0 degrees Celsius to 60 degrees Celsius. How much energy did she use to heat the water? Rememb
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!