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
balu736 [363]
3 years ago
11

What is the resistance of the coil A at 600 kelvin if its resistance at 300 kelvin is 50 ohms? (Assume the temperature coefficie

nt of resistance of the coil is .007/ degrees C)
Physics
2 answers:
leonid [27]3 years ago
8 0

155Ω

Explanation:

R = R ref ( 1 + ∝ ( T - Tref)  

where R = conduction resistance at temperature T

R ref = conductor resistance at reference temperature

∝ = temperature coefficient of resistance for conductor

T = conduction temperature in degrees Celsius

T ref = reference temperature that ∝ is specified at for the conductor material

T = 600 k - 273 k = 327 °C

Tref = 300 - 273 K = 27 °C

R = 50 Ω ( 1 + 0.007 ( 327 - 27) )

R = 155Ω

Vilka [71]3 years ago
3 0

Answer:

<em>155 ohms</em>

Explanation:

Resistance is the opposition to the flow of electric current via a conductor. The expression bellow is used in calculating the resistance of a coil given the temperature coefficient of resistance of the coil;

R = Rn [1 + α (T - Tn)]

where

R is the conductor's resistance at T temperature

Rn is the conductor's resistance at Tn temperature

α is the temperature coefficient of resistance of conducting material

T is the conductor's temperature

Tn is the conductor's reference temperature.

The conduct in question is a coil,

given  

R = ?

Rn = 50 ohms

α = 0.007/°C

T = 600 Kelvin

Tn = 300 Kelvin

Using the equation R = Rn [1 + α (T - Tn)] we substitute to find R

R = 50 [1 + 0.007 (600-300)]

using BODMAS The inner bracket comes first followed by multiplication, addition and then the outer bracket.

<em>R = 155 ohms </em>

You might be interested in
The nervous system has two distinct branches. They are the:
Troyanec [42]

Answer:

central nervous system

peripheral nervous system

Explanation:

The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.Oct 1, 2018

3 0
2 years ago
Read 2 more answers
A bird is flying north with a mass of 2.5kg has a momentum of 17.5kg m/s at what velocity is it flying
klasskru [66]
Momentum = mass • velocity
v= 17.5/2.5
= 7 m/s
8 0
3 years ago
Read 2 more answers
Winds are named based on different factors. How are winds usually named?
eduard
Winds are named based on which compass direction the wind is blowing. For example some common ones are NE or N or SE or SW. NE stands for Northeast, N for North, SE for South East and SW for Southwest.
4 0
2 years ago
Without completing the calculations, determine what the new volume will be in the problem below. Also, explain how you were able
Talja [164]
Boyles law

Pressure and volume are inversely proportional as the new variable changes from the known.

Double the pressure equals 1/2 of original volume, assuming temperature remains the same.

So 40.0 mL is the new volume as it is compressed.
7 0
3 years ago
Include units with all of your answers. A 1.84 kg bucket full of water is attached to a 0.76 m long string.
aleksandrvk [35]
<span>c. What is the magnitude of the tension in the string at the bottom of the circle if you are swinging it at 3.37 m/s? </span>
7 0
3 years ago
Other questions:
  • 7. Plasma from blood (density = 1025 kg/m3) flows along a vertical channel in a steady, incompressible, fully developed laminar
    14·1 answer
  • a ball rolls 6.0 meters as its speed changes from 15 meters per second to 10 meters per second. whaf is the average speed of the
    7·1 answer
  • Explain how heat is transferred between a hot and cold object by conduction.
    14·2 answers
  • An object is placed near a concave mirror having a radius of curvature of magnitude 60 cm. How far should you place the object f
    8·1 answer
  • A person hangs from a nylon rope (Young's modulus of 5 x 109 N/m2) as seen in the picture below. The rope stretches by 2 % and h
    6·1 answer
  • What is the total flux φ that now passes through the cylindrical surface? enter a positive number if the net flux leaves the cyl
    15·1 answer
  • A truck, initially at rest, rolls down a frictionless hill and attains a speed of 20 m/s at the bottom. To achieve a speed of 40
    10·1 answer
  • Given that v=u+at derive an equation of motion devoid t​
    14·1 answer
  • Describe the kinetic molecular theory
    5·1 answer
  • A ball is dropped off a cliff and falls for 24 seconds. How far did the ball fall from the top down
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!