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
ololo11 [35]
4 years ago
8

What is the conductor's resistance if its length is 2m and has a cross-sectional area of 0.7m with a resistivity of4Ωm? a. 1.4 Ω

b. 0.08 2 11.42 Ω d. 0.35 c.

Physics
1 answer:
Firlakuza [10]4 years ago
3 0

Answer:

The answer is c. 11.42 Ohm

Explanation:

The conductor's resistance is calculated by the formula in the figure.

So, you have to replace the given values into the formula.

Resistance of a conductor is equal to the product of rho by the lengh of the conductor divided the cross-sectional area of the conductor.

R= 4 ohm.m . (2m/o.7m^{2} )\\R=11.42ohm

You might be interested in
What do we call the bright, sphere-shaped region of stars that occupies the central few thousand light-years of the milky way ga
Law Incorporation [45]

Answer: The galaxy's bulge

Explanation:

4 0
2 years ago
A beam of light strikes a sheet of glass at an angle of 56.6° with the normal in air. You observe that red light makes an angle
Yuri [45]

Answer:

(a). Index of refraction are n_{red} = 1.344 & n_{violet} = 1.406

(b). The velocity of red light in the glass v_{red} = 2.23 ×10^{8} \ \frac{m}{s}

The velocity of violet light in the glass v_{violet} =2.13 ×10^{8} \ \frac{m}{s}

Explanation:

We know that

Law of reflection is

n_1 \sin\theta_{1} = n_2 \sin\theta_{2}

Here

\theta_1 = angle of incidence

\theta_2 = angle of refraction

(a). For red light

1 × \sin 56.6 = n_{red} × \sin 38.4

n_{red} = 1.344

For violet light

1 × \sin 56.6 = n_{violet} × \sin 36.4

n_{violet} = 1.406

(b). Index of refraction is given by

n = \frac{c}{v}

n_{red} = 1.344

v_{red} = \frac{c}{n_{red} }

v_{red} = \frac{3(10^{8} )}{1.344}

v_{red} = 2.23 ×10^{8} \ \frac{m}{s}

This is the velocity of red light in the glass.

The velocity of violet light in the glass is given by

v_{violet} = \frac{3(10^{8} )}{1.406}

v_{violet} =2.13 ×10^{8} \ \frac{m}{s}

This is the velocity of violet light in the glass.

8 0
3 years ago
Jack tries to place magnets on his refrigerator at home, but they won’t stick. What could be the reason?
saul85 [17]
The most probable reason why the magnets won't stick on the refrigerator is that the body of the refrigerator and the magnets have like poles. If both have negative or both have positive poles facing each other, they will repel. In principle, magnets are attracted to opposite poles and like poles repel. 
5 0
4 years ago
What is the acceleration??????
mr Goodwill [35]

Answer: Acceleration is a measure of how fast velocity changes. Acceleration is the change of velocity divided by the change of time. Acceleration is a vector, and therefore includes both a size and a direction. In short, acceleration is the rate at which speed changes.

6 0
3 years ago
Letter A on this diagram is an example of
MrRa [10]
The answer is A vaporization 

5 0
4 years ago
Read 2 more answers
Other questions:
  • Calculate the wavelength of each frequency of electromagnetic radiation: a. 100.2 MHz (typical frequency for FM radio broadcasti
    12·1 answer
  • If an object moves 40 m north, 40 m west, 40 m south, and 40 m east, what's the total displacement?
    6·2 answers
  • An object is moving along a straight line. The graph shows the velocity of the object over
    8·2 answers
  • How does incident light that falls on an object affect the motion of electrons in the atoms of the object?
    12·1 answer
  • Suppose you wanted to hold up an electron against the force of gravity by the attraction of a fixed proton some distance above i
    6·1 answer
  • A disk between vertebrae in the spine is subjected to a shearing force of 600 N. Find its shear deformation, taking it to have t
    15·1 answer
  • These steps are followed when using the half-life of carbon-14 to determine the age of an object that contains carbon. what is t
    12·2 answers
  • Describe how the series and parallel circuits are different in terms of the direction the electrons flow in the circuit.
    15·1 answer
  • 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
  • don is 10 kilometers ahead of jane, and both are traveling forward. how long will it take jane to catch up with don if jane is t
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!