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
MariettaO [177]
2 years ago
5

A wire as a length of 1.50m, diameter 0.60mm and resistance of 2ohms. calculate the resistance R of a wire of the same materials

of length 0.50m and diameter 0.3mm​
Physics
1 answer:
Otrada [13]2 years ago
3 0
  1. R=ρ×L/A

ρ=R×A/L

A=pie(r²)=pie(0.6²)=pie(0.36)=1.13

ρ=2ohm×1.13mm²/1500mm

ρ=0.0015ohm.mm

2. we were told that the wires were made of the same substance so the resistivity(ρ)is the same for both wires so:

R=ρ×L/A

R=0.0015ohm.mm×500mm/0.09mm²

R=8.3'ohm

so our resistance for the second wire is :

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>R</em><em>=</em><em>8</em><em>.</em><em>3</em><em>'</em><em>ohm</em>

You might be interested in
How long would i t take to walk around the eath nonstop?
zaharov [31]

Divide (25,000) by (the number of miles you can walk in 1 hour).
The answer you get is the number of hours it would take you to walk around the Earth once, IF you were able to walk on water too.

4 0
3 years ago
An arrow is launched from a bow with an initial horizontal velocity of 40
Ivan

Answer:

V = (Vx^2 + Vy^2)^1/2 = (40^2 + 62^2)^1/2

V = 73.8 m/s

tan theta = Vy / Vx = 62/40 = 1.55

theta = 57.2 deg

4 0
2 years ago
what are three activities in your everyday life that involve electromagnetic energy? and explain what type of electromagnetic en
mihalych1998 [28]

1). While I'm driving the car, I keep my eyes pointed out the front window,

so that LIGHT WAVES coming straight in through the front window get into

them. Using this process, I'm able to SEE what's in front of me, so that I don't

drive straight into it.


2). Also while I'm driving the car, I usually have the radio on, and I tune it

to a frequency where the RADIO WAVES that it responds to are being

modulated by people who are either talking or else playing classical music.


3). Before I leave the house on most days, I take a small container of

frozen Irish oatmeal out of the freezer, and I load it into the big box

above the stove, where MICROWAVE ENERGY thaws it, and warms

it to a nice eating temperature.


3A). When I arrive at my job, I usually do things that are also associated

in some way with MICROWAVE energy, since I work as a microwave

system design engineer. Most of the time it's just paperwork, but there

ARE times when I work with an actual radio that's either generating or

detecting real microwave energy, and either sending it up to, or receiving

it down from, a big dish antenna on a radio tower. Those are the days that

I like the best.

8 0
3 years ago
Which sound wave features are being described?
Andre45 [30]

Answer: Sound wave can be described by five characteristics Wavelength , amplitude, time period, frequency and velocity or speed

Explanation:

6 0
3 years ago
Read 2 more answers
Picking up a hot coal is an example of what type of heat transfer?
Zanzabum

That would be a conduction.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Describe the energy transformations that occur from the time a skydiver jumps out of a plane until landing on the ground.
    9·2 answers
  • Which of these materials is an example of an insulator?
    7·1 answer
  • Which choice below shows the order of degrees from least specialized to most specialized? Select the best answer choice.
    13·2 answers
  • When was hawaii volcanoes national park established
    14·1 answer
  • A particle's position along the x-axis is described by. x(t)= At+Bt^2where t is In seconds: x is in meters: and the constants A
    11·1 answer
  • The electrons can be modeled as forming a uniform shell of negative charge. What net electric field do they produce at the locat
    14·1 answer
  • I have 2 bulbs one coverts 60% of energy to light 45% which is the most efficient and what happens to the rest of the energy
    15·2 answers
  • The acceleration due to gravity is g at the earth's surface. an earth satellite is orbiting at a distance from the earth's surfa
    10·1 answer
  • What type of metals are known as ferromagnetic metals
    12·1 answer
  • What is the Orbital Notation for Radon
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!