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
Oksi-84 [34.3K]
3 years ago
7

cell membranes contain channels that allow K + ions to leak out consider channel that has diameter of nm and length of nm if cha

nnel has resistance of G Ω what is resistivity rho of solution in channel?
Physics
1 answer:
DochEvi [55]3 years ago
4 0

Answer:

Resistivity (rho) = Resistance (G) * Area (\pi r^2) / Length (nm)

Explanation:

if rho is the resistivity, then according to the proper equation re-arrangement the resistance is G. Then, Area can be calculated by radius and dividing their product by the length of channel.

You might be interested in
An artist wants to create a metal sculpture using a mold so that his artwork can be readily mass produced. He wants his sculptur
lukranit [14]

Answer:NO

Explanation:

No the mold should not be of the same size as that of sculpture because the material from which molds is made may shrink or expand depending upon its properties .

For example grey cast iron shrinks on cooling.

We need to make mold bigger in general so that if there is a need of finishing it can be done easily without altering the size of sculpture.

5 0
3 years ago
The temperature of a substance is _________
emmainna [20.7K]
The answer is B.
Temperature is just another term for the average kinetic energy of a substance.
6 0
3 years ago
Help ASAP thanks !!!
Ann [662]

Answer:

true

Explanation:

3 0
3 years ago
Gravitational potential energy is related to–A. what an object is made of. B.an object’s motion.C. an object’s position.D. an ob
Bas_tet [7]

Answer:

The Answer is B because the material the object is made of, the position, or the color have absolutely nothing to do with gravitational potential energy

7 0
2 years ago
A small ball is attached to the lower end of a 0.800-m-long string, and the other end of the string is tied to a horizontal rod.
mestny [16]

Answer:

a = 17.68 m/s²

Explanation:

given,

length of the string, L = 0.8 m

angle made with vertical, θ = 61°

time to complete 1 rev, t = 1.25 s

radial acceleration = ?

first we have to calculate the radius of the circle

 R = L sin θ

 R = 0.8 x sin 61°

 R = 0.7 m

now, calculating at the angular velocity

\omega =\dfrac{2\pi}{T}

\omega =\dfrac{2\pi}{1.25}

  ω = 5.026 rad/s

now, radial acceleration

 a = r ω²

 a = 0.7 x 5.026²

a = 17.68 m/s²

hence, the radial acceleration of the ball is equal to 17.68 rad/s²

7 0
3 years ago
Other questions:
  • Why does lithostatic pressure increase more rapidly with depth than hydrostatic pressure?
    7·1 answer
  • Which statement about dwarf planets is true?
    11·2 answers
  • In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between th
    14·1 answer
  • An object has a relativistic momentum that is 8.30 times greater than its classical momentum. What is its speed?
    7·2 answers
  • You just found a metallic object in a creek bed. you have found its mass to be 96.5 g, and it displaces 5mL of water. what is th
    13·2 answers
  • 1. Which pair of physical quantities consists of two vectors?
    6·2 answers
  • A convex lens has a focal length of 0.33 m. The object distance is 0.7 m. What is the image distance?
    13·1 answer
  • What is sound produced by
    8·1 answer
  • The length of a simple pendulum is 0.65 m and the mass of the particle (the “bob”) at the end of the cable is 0.22 kg. The pendu
    5·1 answer
  • How do you calculate the change in speed?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!