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
Alexus [3.1K]
3 years ago
14

Which of the following statements are true?

Physics
1 answer:
aleksley [76]3 years ago
5 0

Good conductors of electricity have larger conductivity values than insulators.

A material that obeys Ohm's law reasonably well is called an ohmic conductor or a linear conductor.

The resistance of a conductor is proportional to the conductivity of the material of which the conductor is composed.

Answer: Options 1, 2 and 4.

<u>Explanation:</u>

In physics and electrical engineering, a conductor is an article or kind of material that permits the progression of charge in at least one headings. Materials made of metal are basic electrical conduits.

Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. Most atoms hold on to their electrons tightly and are insulators.

You might be interested in
How does changing the wavelength alter the frequency of the wave? &amp; How does altering frequency alter pitch?
Rufina [12.5K]

for a given type of wave in a given medium a larger frequency means a smaller wavelength

3 0
3 years ago
Read 2 more answers
List each layer of the earth, starting at the crust, and identify one characteristic of each layer.
Savatey [412]

Answer:

Hope it helps

Explanation:

The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases

7 0
3 years ago
Read 2 more answers
Two movers use a rope system to lift a box to a third-story apartment. They do 1,200 J of work on the rope system, and the rope
xeze [42]
Efficiency is defined as the measure of the amount of work or energy is conserved in a certain process. At all times, in every process, work or energy is always lost or wasted due to certain interference. Not all work given is converted to useful work or energy. Thus , efficiency is calculated by dividing the energy or work output to the energy or work input then the value is multiplied by 100 to express efficiency as percentage.

Efficiency = work output / work input
Efficiency = (1020 J / 1200 J) = 85%
8 0
3 years ago
Read 2 more answers
Imagine that there is a small rocky body caught by Earth’s gravity. Draw a comic-strip cartoon to illustrate its journey as it t
Harlamova29_29 [7]

Answer:

To create this comic strip you can use a narration describing each step and illustrate each one with one image or drawing.

Creating a comic strip involves using images and short texts to explain a specific idea or phenomenon. In the case of the process for a meteor to enter Earth you can use the following ideas.

A meteoroid approaches the Earth at high speed and draw a meteor traveling near to different planets and approaching Earth.

What is that? and draw the Earth wondering who or what is approaching.

The meteoroid enters the atmosphere of the Earth and becomes a meteor and draw the rocky body burning

The rocky body crashes with the surface becoming a meteorite and draw the zone where the meteorite crashed.

Explanation:

8 0
2 years ago
A 2.0kg rocket is traveling straight up. What force muse be applied to the rocket for it to move at a constant velocity?
Yuliya22 [10]
A equal force it always has to be equal
5 0
3 years ago
Other questions:
  • What are physical properties?
    7·1 answer
  • Compared to oceanic crust, continental crust is generally
    10·1 answer
  • The graph below shows the displacement of an object as a constant
    14·1 answer
  • The copper wire and bulb is connected in a series with 220 V electric supply. Why only an electric bulb glows where as the coppe
    6·1 answer
  • Need help on this one please
    5·1 answer
  • A self-driving car traveling along a straight section of road starts from rest, accelerating at 2.00 m/s2 until it reaches a spe
    10·2 answers
  • Sound from a source vibrating at frequency 200 Hz travels at the speed of 300 m/s in air.Wavelength of the sound is (in m/s)
    6·1 answer
  • HELP! block is released from rest and slides down a frictionless ramp inclined at 30' from the horizontal. When the block reache
    9·1 answer
  • Which segment represent slowing down
    8·2 answers
  • answer questions1) The south pole of the steel magnet will be brought closer to the iron nail head. Which pole will be at the po
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!