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
Gnoma [55]
3 years ago
13

At the same temperature, two wires made of pure copper have different resistances. The same voltage is applied at the ends of ea

ch wire. The wires may differ in
Physics
1 answer:
Semmy [17]3 years ago
6 0

Answer:

Explanation:

As we know that the resistance of the wire is directly proportional to the length of wire and inversely proportional to the area of crossection of the wire.

As the material is copper for both the wires so the resistivity is same and the voltage is also same. As their resistance is different it means either length is different or the area of crossection is different.

You might be interested in
A person drops a brick from the top of a building. The height of the building is 400 m and the mass of the brick is 2.00 kg. Wh
DaniilM [7]
-- It takes the brick 8.9 seconds to reach the ground. 

-- At the instant of the "splat", it's falling at 89 m/s.

-- The mass doesn't matter. If not for air resistance, every object
    would fall at the same rate.  The answer is the same for a feather,
    a rubber chicken, a brick, or a school bus.
5 0
3 years ago
How do you get derived units from derived quantities
Tasya [4]

Answer:

A derived quantities is terms of the 7 base quantities via a system of quantity equations which are called SI derived units.

Explanation: there you go:)

4 0
3 years ago
An electrical motor spins at a constant 1975.0 rpm. If the armature radius is 7.112 cm, what is the acceleration of the edge of
stealth61 [152]

Answer:

Option D is the correct answer.

Explanation:

Since value of angular acceleration is constant, the body has only centripetal acceleration.

Centripetal acceleration

               a=\frac{v^2}{r}=\frac{(r\omega )^2}{r}=r\omega ^2

We have radius = 7.112 cm = 0.07112 m

Frequency, f = 1975 rpm = 32.92 rps

Angular frequency, ω = 2πf = 2 x π x 32.92 = 206.82 rad/s

Substituting in centripetal acceleration equation,

              a=r\omega ^2=0.07112\times 206.82^2=3042.17m/s^2

Option D is the correct answer.                

3 0
4 years ago
Communicating results allows scientists to learn from each other's results.
sveta [45]

True, scientists often talk to each other to figure out if their results were similar and what they could have done better.

Although, talking to other scientists does have risks, other scientists could copy your work and further better it.

So, your final answer is TRUE, sorry for the long answer, I needed to have a word count about 20 characters and then I got carried away! lol

3 0
3 years ago
Read 2 more answers
Please helppppppp!!!!!!!!!!!!!!!!!!!!!!!!
kykrilka [37]

Answer:

I think the Bulb No. 2 will stop emitting light if the bulb No. 1 burns out.

3 0
3 years ago
Other questions:
  • What evidence supports a scientist's conclusion that fossil B is older than fossil A?
    15·2 answers
  • Part a consider another special case in which the inclined plane is vertical (θ=π/2). in this case, for what value of m1 would t
    7·1 answer
  • A parallel plate capacitor is attached to a battery to create a potential difference of 12V The battery is then disconnected and
    7·1 answer
  • Rounded to the nearest whole number, how many protons are in an atom of krypton?
    6·2 answers
  • What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radiu
    5·1 answer
  • Graph y=2 line find value of y when x =5
    12·2 answers
  • A 20 kg object is floating in space. What is its mass?
    13·1 answer
  • What two types of softball games can you play?<br><br> I really need to know
    5·2 answers
  • a bus is moving with the velociity of 36 km/hr . after seeing a boy at 20 m ahead on the road, the driver applies the brake and
    11·1 answer
  • How does the force of friction for a sliding object vary with the area of contact?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!