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
prohojiy [21]
3 years ago
8

Calculate the conductance of a conduit the cross-sectional area of which is 3.0 cm2 and the length of which is 9.0 cm, given tha

t its conductivity is 0.80 ohm-1cm-1.
Physics
2 answers:
FromTheMoon [43]3 years ago
7 0

Answer: 0.266 ohm^{-1}

Explanation: Specific conductance or conductivity is the conductance for unit volume of a solution.

\kappa=C\times \frac{l}{a}

where,

\kappa =Specific conductance  or Conductivity=0.80ohm^{-1}cm^{-1}

C = Conductance = ?

l = length= 9.0 cm

a = area = 3.0cm^2

\frac{length}{area}= cell constant =\frac{9.0cm}{3.0cm^2}=3cm^{-1}

0.80ohm^{-1}cm^{-1}=C\times 3cm^{-1}

C=0.266 ohm^{-1}


pshichka [43]3 years ago
6 0
For resistance we have R=ρ l/a
 thus for conductance we have K=σ a/l
conductance,K=1/R
conductivity,σ =1/ρ

σ = .80 Ω-1 cm-1
l =9 cm
a = 3 cm²
K=.80 ×3/9
  =0.26 Ω-1


You might be interested in
Hellppppp&/&/&/&//&/&/&/&/&& will give brainiest
Komok [63]

Explanation:

i really didn't understand the question

im soo so sorry

3 0
2 years ago
Please help! Average speed. Show work!
KiRa [710]

Answer:

3.78 m/s

Explanation:

Recall that the formula for average speed is given by

Speed = Distance ÷ Time taken

Where,

Speed = we are asked to find this

Distance = given as 340m

Time taken = 1.5 min = 1.5 x 60 = 90 seconds

Substituting the values into the equation:

Speed = Distance ÷ Time taken

= 340 meters  ÷ 90 seconds

= 3.777777 m/s

= 3.78 m/s (round to nearest hundredth)

3 0
2 years ago
Read 2 more answers
You hear the engine roaring on a race car at the starting line. Predict the changes in the sound as the race starts and the car
gogolik [260]

B. The sound of the engine will get louder and the pitch higher.

4 0
3 years ago
Read 2 more answers
how do Swati and Banks adjust their body position during a skydiving jump so they can fall at the same rate
professor190 [17]

While skydiving, its not just freely falling under Earth's gravity. Additional force called drag acts against the gravity which slows down the rate of fall. Drag is caused by the air molecules which pushes against the body as it falls through them. This is actually a significant amount of force which slows down the rate of fall of the body. Drag depends on the contact surface area and weight. More the surface area in contact, more would be the drag. The sitting position of the skydiver would experience less drag than the chest down position because of the less contact surface area of the body with the air molecules while in the former case. No two persons have identical body shape and weight. Hence, the rate of fall can be made nearly equal but not exactly equal. This is would be possible when they are having same body position.

3 0
3 years ago
Suppose you monitor a large number (many thousands) of stars over a period of 3 years, searching for planets through the transit
nasty-shy [4]

Answer:

2. You must be able to precisely measure variations in the star's brightness with time.

5. As seen from Earth, the planet's orbit must be seen nearly edge–on (in the plane of our line-of-sight).

6. You must repeatedly obtain spectra of the star that the planet orbits.

Explanation:

The transit method is a very important and effective tool for discovering new exoplanets (the planets orbiting other stars out of the solar system). In this method the stars are observed for a long duration. When the exoplanet will cross in front of theses stars as seen from Earth, the brightness of the star will dip. To observe this dip following conditions must be met:

1. The orbit of the planet should be co-planar with the plane of our line of sight. Then only its transition can be observed.

2. The brightness of the star must be observed precisely as the period of transit can be less than a second as seen from Earth. Also the dip in brightness depends on the size of the planet. If the planet is not that big the intensity dip will be very less.

3. The spectrum of the star needs to be studied and observe during the transit and normally to find out the details about the planets.

4. Also, the orbital period should be less than the period of observation for the transit to occur at least once.

4 0
3 years ago
Other questions:
  • 2. The stage choreography for a play requires an
    7·1 answer
  • Clem's credit score is 733, while Ingrid's credit score is 688. how much more would Ingrid have to pay per month than Clem?
    9·2 answers
  • A car moves at a speed of 40 miles per hour for half an hour and then at 60 miles per hour for two hours. What is the average sp
    5·1 answer
  • At one time, it was thought that positive charge was spread throughout the atom. This was the plum-pudding model. Rutherford's e
    8·2 answers
  • Potential energy related to an object's height is called
    15·1 answer
  • What is a constructive force caused by the convection in the mantle
    13·1 answer
  • Compared to all other forms of energy, wind power is most similar to tidal wave power because _____.
    5·2 answers
  • What is a star? What is our biggest and closest star?<br> (Btw i wasn't sure if this was Physics.)
    9·2 answers
  • When particles vibrate so quickly they break free from their fixed positions, matter is:
    7·2 answers
  • Which of the following elements is more reactive than the others
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!