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
Alexxandr [17]
4 years ago
14

A nonconducting sphere has radius R = 1.81 cm and uniformly distributed charge q = +2.08 fC. Take the electric potential at the

sphere's center to be V0 = 0. What is V at radial distance from the center (a) r = 1.20 cm and (b) r = R? (Hint: See an expression for the electric field.)
Physics
1 answer:
Sloan [31]4 years ago
4 0

Answer:

a) V = -0.227 mV

b) V = -0.5169 mV

Explanation:

a)

Inside a sphere with a uniformly distributed charge density, electric field is radial and has a magnitude

E = (qr) / (4πε₀R³)

As we know that

V = -\int\limits^r_0 {E} \, dr

By solving above equation, we get

V = (-qr²) / (8πε₀R³)

When

R = 1.81 cm

r = 1.2 cm

q = +2.80 fC

ε₀ = 8.85 × 10⁻¹²

V = (-2.80 × 10⁻¹⁵ × (1.2 × 10⁻²)²) / (8 × 3.14 × 8.85 × 10⁻¹² × (1.81 × 10⁻²)³)

V = -2.27 × 10⁻⁴ V

V = -0.227 mV

b)

When

r = R

R = 1.81 cm

q = +2.80 fC

ε₀ = 8.85 × 10⁻¹²

V = (-qR²) / (8πε₀R³)

V = (-q) / (8πε₀R)

V = (-2.80 × 10⁻¹⁵) / (8 × 3.14 × 8.85 × 10⁻¹² × (1.81 × 10⁻²))

V = -5.169 × 10⁻⁴ V

V = -0.5169 mV

You might be interested in
An object produces a sound wave with a wavelength 75.0cm. if the speed of sound is 350.0m/s, the frequency of the sound is
leva [86]

Answer:

wavelength=75.0

speed of sound(v)=350 .0m/s

frequency(f)=?

we know,

v=f*wavelengh

350.0 =f*750

f. =350/75

=4.667

pls mark me brainlest

6 0
3 years ago
Report this plssssssssss
aivan3 [116]
What are you trying to say?
6 0
4 years ago
A periodic transverse wave has an amplitude of 0.20 meter and a wavelength of 3.0 meters. If the frequency of this wave is 12 Hz
skelet666 [1.2K]

Answer:

36 m/s

Explanation:

The speed of wave is a product of wavelength and frequency, expressed as s=fw where f is frequency in Hz and w is wavelength. Wavelength is the distance between successive crests while frequency is also the reciprocal of time. Amplitude has no effect on the velocity of waves. Substituting frequency with 12 Hz and wavelength with 3 m then the speed will be

S=3*12=36 m/s

Therefore, the speed is 36 m/s

5 0
3 years ago
Salt Flats of Utah, had a mass of 4100 kg, and its engine
Andrej [43]

Answer:

<h2>16.59 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{68000}{4100}  =  \frac{680}{41}  \\  = 16.58536

We have the final answer as

<h3>16.59 m/s²</h3>

Hope this helps you

8 0
3 years ago
An object travels with velocity v = 4.0 meters/second and it makes an angle of 60.0° with the positive direction of the y-axis.
Galina-37 [17]
Vx=cos60(4)
x-component of velocity
If you think about it, it makes a right triangle when you combine all the different types of forces together such as v, vx and vy. Then, you can use trigonometry and soh cah toa in order to figure out vx.
8 0
3 years ago
Other questions:
  • A current of 9 A flows through an electric device with a resistance of 43 ohms. What must be the applied voltage in this particu
    5·2 answers
  • A Car travels from Philadelphia to New York with a speed of 36 km/h. What will be the car's displacement in 2 hours?
    5·1 answer
  • Your ears are sensitive to differences in pitch, but they are not very sensitive to differences in intensity. You are not capabl
    14·1 answer
  • Two sound waves (wave X and wave Y) are moving through a medium at the same speed. If wave X has a greater frequency than wave Y
    5·1 answer
  • Four different insect mouthparts are shown which is best adapted for chewing leaves YXWZ
    10·2 answers
  • A current of 2.0A flows through a light bulb. What is the amount of charge flowing through the light bulb in 40 seconds?
    12·1 answer
  • A force that tries to slow things That are moving through air
    6·2 answers
  • A 100 kg bungee jumper leaps from a bridge. The bungee cord has an un-streched equilibrium length of 10 m, and a spring constant
    10·2 answers
  • A rope is attached to a hook in the ceiling and is hanging straight down. The rope has a mass m, and nothing is attached to the
    14·1 answer
  • The noise from a power mower was measured at 104 dB. The noise level at a rock concert was measured at 121 dB. Find the ratio of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!