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
nalin [4]
3 years ago
6

Suppose that at room temperature, a certain aluminum bar is 1.0000 m long. The bar gets longer when its temperature is raised. T

he length l of the bar obeys the following relation: l=1.0000+2.4×10−5T, where T is the number of degrees Celsius above room temperature. What is the change of the bar's length if the temperature is raised to 13.0 ∘C above room temperature?
Physics
1 answer:
raketka [301]3 years ago
4 0

Answer:

ΔL =0. 000312  m

Explanation:

Given that

At  room temperature ( T = 25 ∘C)  ,L= 1 m

L=1+2.4\times 10^{-5}T

So the length at  13.0 ∘C above room temperature

L=1+2.4\times 10^{-5}T

L=1+2.4\times 10^{-5}\times 13

L=1.000312 m

So the change in length

ΔL = 1.000312 - 1.0000 m

ΔL =0. 000312  m

You might be interested in
Cora, an electrician, wraps a copper wire with a thick plastic coating. What is she most likely trying to do?
alukav5142 [94]
The correct answer among the choices given is the last option. Cora wrapping the copper wire with a thick plastic coating keeps a current from passing out a wire. The plastic wire here serves as an insulator. An insulator is a material that prevents electricity or current to flow out the circuit. In order to lessen the loss of energy.

HOPE THIS HELPS!
6 0
3 years ago
Read 2 more answers
In this unit, the amount of solute is measured in?
Hoochie [10]
Try liters if you haven’t done it yet. I’m so sorry if i’m incorrect.
5 0
3 years ago
Read 2 more answers
What is the potential difference across a parallel-plate capacitor whose plates are separated by a distance of 4.0 mm where each
suter [353]

The potential difference across the parallel plate capacitor is 2.26 millivolts

<h3>Capacitance of a parallel plate capacitor</h3>

The capacitance of the parallel plate capacitor is given by C = ε₀A/d where

  • ε₀ = permittivity of free space = 8.854 × 10⁻¹² F/m,
  • A = area of plates and
  • d = distance between plates = 4.0 mm = 4.0 × 10⁻³ m.

<h3>Charge on plates</h3>

Also, the surface charge on the capacitor Q = σA where

  • σ = charge density = 5.0 pC/m² = 5.0 × 10⁻¹² C/m² and
  • a = area of plates.

<h3>The potential difference across the parallel plate capacitor</h3>

The potential difference across the parallel plate capacitor is V = Q/C

= σA ÷ ε₀A/d

= σd/ε₀

Substituting the values of the variables into the equation, we have

V = σd/ε₀

V = 5.0 × 10⁻¹² C/m² × 4.0 × 10⁻³ m/8.854 × 10⁻¹² F/m

V = 20.0 C/m × 10⁻³/8.854 F/m

V = 2.26 × 10⁻³ Volts

V = 2.26 millivolts

So, the potential difference across the parallel plate capacitor is 2.26 millivolts

Learn more about potential difference across parallel plate capacitor here:

brainly.com/question/12993474

7 0
3 years ago
Which two actions would weaken an electromagnet?
Semenov [28]

Answer:

Decreasing the number of warps of wire

Replacing the steel core of the magnet with a plastic core

Explanation:

But I’m not exactly sure about your answers these are the two answers I had

7 0
3 years ago
Which of the following describes the variable that responds to a change?
timama [110]
Dependent variable is your answer.
8 0
3 years ago
Read 2 more answers
Other questions:
  • A 72.0-kg skydiver is falling at a terminal velocity of 79.0 m/s. Which equation should be used to calculate the diver’s kinetic
    11·2 answers
  • Why is the warm air rising while the cold air is sinking
    15·2 answers
  • Cliff divers at Acapulco jump into the sea from a cliff 37.1 m high. At the level of the sea, a rock sticks out a horizontal dis
    15·1 answer
  • Att=0 a car has a speed of 30 m/s. Att-6 s, its speed is 14 m/s.
    13·1 answer
  • A policeman is chasing a criminal across a rooftop at 10 m/s. He decides to jump to the next building which is 2 meters across f
    10·1 answer
  • If the child pulls with a force of 20 N for 12.0 m , and the handle of the wagon is inclined at an angle of 25 ∘ above the horiz
    14·1 answer
  • A boat crosses a 200 m wide river at 3 ms-1, north relative to water. The river flows at 1 ms-1 as shown.
    8·1 answer
  • A person lifts a heavy load to a vertical height of 2.0 m in 3 seconds. If he/she had done this more slowly in 6 seconds, the
    14·1 answer
  • HELLLP CORRECT ANSWER IS BRAINIEST!!!!!
    9·2 answers
  • A body of mass 20 kg moving north with a velocity of 0.5 ms-1 is subjected to a force of 15 N North for 2.9 s. Calculate the fin
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!