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
valentina_108 [34]
3 years ago
5

Which copper wire would have the highest resistance?

Physics
1 answer:
Dafna11 [192]3 years ago
7 0

Answer:

Just consider the resistance as water flowing through a pipe. If the pipe is too small in radius (consider thin wire as small pipe) water can’t flow easly. If the pipe is big in radius (consider thick wire as big pipe) water can flow easly. So flowing water through a small pipe for a long distance will inversly affect the normal flow where as flowing water through a big pipe for a small distance will not affect too much the normal flow.

So long & thin wire has high resistance. Short & thick wire has low resistance.

B. A wire that is 2 m long and has a cross-sectional area of 0.066

You might be interested in
A wheel rotating about a fixed axis has a constant angular acceleration of 4.0 rad/s2. In a 4.0-s interval the wheel turns throu
anastassius [24]

Answer:

a. 3 s.

Explanation:

Given;

angular acceleration of the wheel, α = 4 rad/s²

time of wheel rotation, t = 4 s

angle of rotation, θ = 80 radians

Apply the kinematic equation below,

\theta = \omega_1 t \ + \ \frac{1}{2} \alpha t^2\\\\80 = 4\omega_1 + \frac{1}{2}*4*4^2\\\\80 = 4\omega_1 + 32\\\\ 4\omega_1 = 48\\\\ \omega_1 = \frac{48}{4}\\\\ \omega_1 = 12 \ rad/s

Given initial angular velocity, ω₀ = 0

Apply the kinematic equation below;

\omega_1 = \omega_o + \alpha t_1\\\\12 = 0 + 4t\\\\4t = 12\\\\t = \frac{12}{4}\\\\t = 3 \ s

Therefore, the wheel had been in motion for 3 seconds.

a. 3 s.

8 0
3 years ago
Calculate the energy, in electron volts, of a photon whose frequency is the following.
Tems11 [23]

Answer:

(a) E=2.42eV

(b) E=1.45*10^{-5}eV

(c) E=1.66*10^{-7}eV

Explanation:

The Planck-Einstein relation allows us to know the energy (E) of a photon, knowing its frequency (f). According to this relation, the energy of the photon is defined as:

E=hf

Here h is the Planck constant.

(a)

E=(4.14*10^{-15}eV\cdot s)(585*10^{12}Hz)\\E=2.42eV

(b)

E=(4.14*10^{-15}eV\cdot s)(3.50*10^{9}Hz)\\E=1.45*10^{-5}eV

(c)

E=(4.14*10^{-15}eV\cdot s)(40.0*10^{6}Hz)\\E=1.66*10^{-7}eV

3 0
3 years ago
Consider only the first major feature, which concerns observed patterns of motion in the solar system. Scientifically, which of
anzhelika [568]

Answer:

All the planets have nearly circular orbit except the Pluto

Explanation:

Planets closer to the Sun move around their orbits at a very high speed than planets farther from the Sun.

All the planets except Pluto, orbit the Sun in nearly the same plane.

All the planets have nearly circular orbits except Pluto because of it's distance from the sun which is over 5,000,000,000km

7 0
4 years ago
The amount of gravitational potential energy released as an object falls depends on
vlabodo [156]

Its mass

As since gravitation potential energy = (MGH), which is basically (mass x acceleration due to gravity x height)

8 0
3 years ago
How does the light-collecting area of an 8-meter telescope compare to that of a 2-meter telescope? How does the light-collecting
IceJOKER [234]

Answer:

The 8-meter telescope has 16 times the light-collecting area of the 2-meter telescope.

Explanation:

Area of 8 meter telescope

A_1=\pi \frac{D^2}{4}\\\Rightarrow A_1=16\pi

Area of 2 meter telescope

A_2=\pi \frac{D^2}{4}\\\Rightarrow A_1=1\pi

Dividing the equations we get

\frac{A_1}{A_2}=\frac{16\pi}{1\pi}\\\Rightarrow A_1=16A_2

Hence, the 8-meter telescope has 16 times the light-collecting area of the 2-meter telescope.  

7 0
3 years ago
Other questions:
  • Why can light microscopes produce images in their natural color
    6·1 answer
  • You have a great summer job in a research laboratory with a group investigating the possibility of producing power from fusion.
    13·1 answer
  • _______ measures an object's change in position per unit time.
    13·2 answers
  • What about a rubber band, can it change its shape? Is it a solid?
    7·2 answers
  • A cameraman sitting near the open door of a news helicopter accidentally drops his 140-g mobile phone out
    8·2 answers
  • A dripping water faucet steadily releases drops 1.0 s apart. As these drops fall, does the distance between them increase, decre
    13·1 answer
  • What is the simulation theory?
    7·1 answer
  • In a solution , the ______ is the substance that takes in , or dissolve,the other substance
    15·2 answers
  • I WILL MARK BRAINLIEST IF YOU ANSWER THIS PHYSICS QUESTION!!!
    12·1 answer
  • a school bus takes 0.50 hours to reach the school from your home. if the average speed of the bus is 20km/h, what is displacemen
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!