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
tatuchka [14]
3 years ago
6

What is the resistance at 20°C of a 2.0-meter length of tungsten wire with a cross-sectional area of 7.9 10^-7

Physics
1 answer:
Bad White [126]3 years ago
8 0

Answer:

1.4 * 10 ^-1 Ω

Explanation:

Hi,

For this question, we gotta use the formula

R = pL/A

p = The resistivity of your material at 20°C

L = length of the wire

A = cross-sectional area

The resistivity of tungsten is 5.60 * 10^-8 at 20°C

By plugging the values, we get:

R = (5.60 * 10^-8)(2.0)/(7.9*10^-7) = 1.4 * 10 ^-1 Ω

You might be interested in
Plzz help me please ​
olasank [31]
Permanent magnet. An induced magnet would be created when a piece of iron (for example) is in contact with a magnet. Temporary magnets would be something like an electromagnet. Bar magnets are permanently magnetic unless we heat them or hammer them to cause their domains to loose alignment.
6 0
3 years ago
Illustrate a body of mass 5.0kg pulled by horizontal force F . if the body accelerates 2.0ms² and experience a frictional force
Natasha2012 [34]

Explanation:

a. Net force is mass times acceleration (Newton's second law).

∑F = ma

∑F = (5.0 kg) (2.0 m/s²)

∑F = 10 N

b. The net force is the sum of the individual forces.

10 N = F − 5 N

F = 15 N

c. Friction force here is mgμ.

mgμ = 5 N

(5.0 kg) (10 m/s) μ = 5 N

μ = 0.1

3 0
3 years ago
18. When is an atom unlikely to react and form chemical bonds?
katrin2010 [14]
Fission and fusion are two processes that release very little amounts of energy.
5 0
3 years ago
One watt is equal to which of these values?
dusya [7]
1 W = 1 J/s 
Watt<span> is the unit of measure for power .
</span><span>
</span>Joule is the unit of measure for the energy and the second is the unit of measure for time.


3 0
3 years ago
Read 2 more answers
John is hiking and notices a small stream of water flowing down the side of the mountain. What part of the water cycle is John o
Alexus [3.1K]

Answer: Runofff

Explanation: because it said that it is going down the side of the mountain

3 0
2 years ago
Other questions:
  • A(n) __________ exhibits sedimentary layers that are parallel to each other above and below an erosive surface.
    13·1 answer
  • The production of electricity from fission nuclear reactions in power plants is regulated by controlling
    7·2 answers
  • When the quantity q is greater than zero, __________ is added to the system?
    8·1 answer
  • How is coal formed? from hydrothermal deposits from igneous intrusions from 300 to 400 million year old plant remains from oil d
    15·1 answer
  • Coins were developed as a medium of exchange because other items like cows, grain, and land were more difficult to move from pla
    8·2 answers
  • A wheel with moment of inertia 25 kg. m2 and angular velocity 10 rad/s begins to speed up, with angular acceleration 15 rad/sec2
    5·1 answer
  • How are power ratings used to describe machines?
    11·2 answers
  • If the elevator cable breaks when the elevator is at a height h above the top of the spring, calculate the value that the spring
    5·1 answer
  • What is charging by conduction. <br> Can you also give an real life example of it.
    8·2 answers
  • The learning about Universe is<br> called ________ ...​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!