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
GarryVolchara [31]
4 years ago
15

Which statements best characterize conductors? Check all that apply.

Physics
2 answers:
romanna [79]4 years ago
5 0
It would be the first one and the third one
lidiya [134]4 years ago
5 0

Answer:

Conductors allow electricity to easily move through them.  

Metal is an example of a conductor.  

Explanation:

Conductors are materials that have free electrons, so they allow electrical currents (which are made of electrons traveling) passing through them.

Let's analyze each statement separately:

- Conductors allow electricity to easily move through them.  --> TRUE: conductors allow electrical currents to pass through them.

- Glass is an example of a conductor.  --> FALSE: glass is an example of insulator (insulators are materials that do not allow the flow of current)

- Metal is an example of a conductor.   --> TRUE: metals are generally good conductors of electricity, since they have many free electrons.

- Conductors do not allow electricity to easily move through them.   --> FALSE: it's actually the opposite, conductors allow electricity to easily move through them.

- Conductors restrict the flow of thermal energy. --> FALSE: conductors are generally also good conductors of thermal energy, so they do not restrict the flow of thermal energy.

You might be interested in
What is the acceleration of a car moving
Iteru [2.4K]

Answer: Accelaration is 2.77 m/s*s

<h2 />

Explanation:

V0=0km/h=0m/s

V1=100 km/h=27.7 m/s

t=10s=

Use equation for accelaration : a=(V1-V0)/t

a=(0m/s-27.7m/s)/10s

a=-27.7s/10s

a=2.77m/s*s

6 0
4 years ago
What characteristics are shared by both heating and cooling curves? choose 4
Luda [366]

The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.

<h3>What is heating and cooling?</h3>

Heating is the process by which the temperature of a place or substances or object is increased.

Cooling Is the process of lowering the temperature of a substance or object by using conditioners or by freezing .

Therefore, The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.

Learn more about heating and cooling below.

brainly.com/question/9938370

#SPJ1

6 0
3 years ago
A rectangular key was used in a pulley connected to a line shaft with a power of 7.46 kW at a speed of 1200 rpm. If the shearing
Damm [24]

Given:

Shaft Power, P = 7.46 kW = 7460 W

Speed, N = 1200 rpm

Shearing stress of shaft, \tau _{shaft} = 30 MPa

Shearing stress of key, \tau _{key} = 240 MPa

width of key, w = \frac{d}{4}

d is shaft diameter

Solution:

Torque, T = \frac{P}{\omega }

where,

\omega = \frac{2\pi  N}{60}

T = \frac{7460}{\frac{2\pi  (1200 )}{60}} = 59.365 N-m

Now,

\tau _{shaft} = \tau _{max} = \frac{2T}{\pi (\frac{d}{2})^{3}}

30\times 10^{6} = \frac{2\times 59.365}{\pi (\frac{d}{2})^{3}}

d = 0.0216 m

Now,

w =  \frac{d}{4} =  \frac{0.02116}{4} = 5.4 mm

Now, for shear stress in key

\tau _{key} = \frac{F}{wl}

we know that

T = F \times r =  F. \frac{d}{2}

⇒ \tau _{key} = \frac{\frac{T}{\frac{d}{2}}}{wl}

⇒ 240\times 10^{6} = \frac{\frac{59.365}{\frac{0.0216}{2}}}{0.054l}

length of the rectangular key, l = 4.078 mm

7 0
3 years ago
Read 2 more answers
Convert 4 centimeters to meters using dimensional analysis and scientific notation. Please go step by step as I am having diffic
-BARSIC- [3]

Answer:

4 cm = 0.04 m

Explanation:

1 m = 100 cm

4 cm = 4 / 100

4 cm = 0.04 m

7 0
3 years ago
Read 2 more answers
Which evidence best supports the theory that the universe began with a massive explosion?
Ivanshal [37]
I think it's b. But I'm not sure
5 0
3 years ago
Read 2 more answers
Other questions:
  • As a liquid evaporates, its temperature
    8·2 answers
  • ______ energy is defined as the energy of motion.
    9·2 answers
  • A. 2kg<br><br> B. 6kg<br><br> C. 8kg<br><br> D. 14kg
    11·1 answer
  • A car starts from rest and accelerates at a constant rate for a distance of 130m in 7.0 s. At what rate did the car accelerate?
    12·1 answer
  • (a) A physicist performing a sensitive measurement wants to limit the magnetic force on a moving charge in her equipment to less
    11·1 answer
  • What is the lowest possible temperature?<br> a 273 K<br> b absolute zero<br> со °C<br> d 100 °C
    10·1 answer
  • True or False: The medium moves up and down in a transverse wave.
    5·1 answer
  • If Earth’s Moon were replaced with a typical neutron star, what would the angular diameter of the neutron star be as seen from E
    7·1 answer
  • If in the circuit shown in figure below, the reading on the voltmeter is 5 V and the reading on the ammeter is 25 mA, the resist
    12·1 answer
  • A stationary police officer directs radio waves emitted by a radar gun at a vehicle moving toward the officer. Compared to the e
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!