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
natali 33 [55]
3 years ago
7

Why does the cord of an electric heater not glow while the heating element does​

Physics
1 answer:
Strike441 [17]3 years ago
7 0

Answer: Why does the cord of an electric heater not glow while the heating element does? The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminum is very low so it does not glow.

Explanation:

You might be interested in
You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 275 N in the positive x di
Volgvan

Answer:

f = 347.08 N

Explanation:

The frictional force exerted by the floor on the refrigerator is given as follows:

f = \mu R = \mu W

where,

f = frictional force = ?

μ = coefficient of static friction = 0.58

W = Weight of refrigerator = mg

m = mass of refrigerator = 61 kg

g = acceleration due to gravity = 9.81 m/s²

Therefore,

f = \mu mg\\f = (0.58)(61\ kg)(9.81\ m/s^2)\\

<u>f = 347.08 N</u>

8 0
3 years ago
Grinding quartz crystals down to produce sand is an example of a a. change of state. c. chemical reaction. b. chemical change. d
seraphim [82]
D. A physical change

The makeup of it is still the same it's just ground up
5 0
3 years ago
If a 15 N box is lifted a distance of 3 m, how much work is done?
Naily [24]

Answer:

W=45J

Explanation:

W=Fd

W=15(3)=45

W=45J

7 0
3 years ago
Read 2 more answers
A charge q = 3 × 10-6 C of mass m = 2 × 10-6 kg, and speed v = 5 × 106 m/s enters a uniform magnetic field. The mass experiences
NeX [460]

Answer:

Magnetic field, B = 0.004 mT

Explanation:

It is given that,

Charge, q=3\times 10^{-6}\ C

Mass of charge particle, m=2\times 10^{-6}\ C

Speed, v=5\times 10^{6}\ m/s

Acceleration, a=3\times 10^{4}\ m/s^2

We need to find the minimum magnetic field that would produce such an acceleration. So,

ma=qvB\ sin\theta

For minimum magnetic field,

ma=qvB

B=\dfrac{ma}{qv}

B=\dfrac{2\times 10^{-6}\ C\times 3\times 10^{4}\ m/s^2}{3\times 10^{-6}\ C\times 5\times 10^{6}\ m/s}

B = 0.004 T

or

B = 4 mT

So, the magnetic field produce such an acceleration at 4 mT. Hence, this is the required solution.

4 0
3 years ago
The temperature of water in a beaker is 45°C. What does this measurement represent?
Tasya [4]

Answer:

the average kinetic energy of water particles - C.

8 0
3 years ago
Other questions:
  • Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of useful mechanical power to the wat
    5·1 answer
  • A fortnite is an old English term that means 14 days. How many seconds are in a fortnite?
    12·2 answers
  • 3. A ball is thrown up vertically, with a velocity of 20m/s. Calculate the maximum height
    7·1 answer
  • Suppose we repeat the experiment from the video, but this time we use a rocket three times as massive as the one in the video, a
    11·1 answer
  • Predict the velocity vy when y=-3.5 meters. Use the average acceleration you calculated in Activity 1. Use the formula v = Vo2 +
    9·1 answer
  • Although sunlight is unpolarized, the light that reflects from smooth surfaces may be partially polarized in the direction paral
    6·1 answer
  • What is the momentum of a 12 kg ball<br> travelling at 35 m/s?
    5·2 answers
  • Powers of 10
    12·1 answer
  • 1, Can bed bugs adapt to the heat treatments? Why or why not?
    6·1 answer
  • What is the displacement if I walk three blocks east two blocks south one block west and two blocks north
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!