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
just olya [345]
3 years ago
6

A 15.0 m long steel rod expands when its temperature rises from 34.0 degrees C to 50.0 degrees C. What is the change in the beam

's length due to the thermal expansion? Steel has a coefficient of linear expansion of 12.0 E -6/C degrees.
0.0612 m
0.00432 m
0.00288 m
0.0119 m
0.0475 m
Physics
2 answers:
azamat3 years ago
8 0
0.00288................
Lilit [14]3 years ago
5 0

Answer:

The change in beam's length due to the thermal expansion is 0.00288 meters.

Explanation:

Given that,

Original length of the steel rod, l = 15 m

Initial temperature, T_i=34^{\circ} C

Final temperature, T_f=50^{\circ} C

The coefficient of linear expansion of the steel, \alpha =12\times 10^{-6}\ /^{\circ} C

Let \Delta l is the change in beam's length due to the thermal expansion. It can be given by :

\dfrac{\Delta l}{l}=\alpha (T_f-T_i)\\\\\Delta l=l\alpha (T_f-T_i)\\\\\Delta l=15\times 12\times 10^{-6}\times (50-34)\\\\\Delta l=0.00288\ m

So, the change in beam's length due to the thermal expansion is 0.00288 meters. Hence, this is the required solution.

You might be interested in
according to newtons second law of motion, when an object is acted on by an unbalanced force, how will that object respond?
olga_2 [115]
When an object is acted on by an unbalanced force, then that object will accelerate.
6 0
3 years ago
Read 2 more answers
a swimmer can swim in still water at a speed of 9.50 m/s. he intends to swim directly across the river that has a downstream cur
Doss [256]
Refer to the diagram shown below.

Still-water speed  = 9.5 m/s
River speed = 3.75 m/s down stream.

The velocity of the swimmer relative to the bank is the vector sum of his still-water speed and the speed of the river.

The velocity relative to the bank is
V = √(9.5² + 3.75²) = 10.21 m/s

The downstream angle is
θ = tan⁻¹ 3.75/9.5 = 21.5°

Answer:  10.2 m/s at 21.5° downstream.

7 0
3 years ago
Read 2 more answers
What kind of law of motion A car still moves for a short period even after the brakes
nikklg [1K]

Answer:

<h2>inertia of motion </h2>

Explanation:

.... ...

3 0
2 years ago
The y-axis on a distance-time graph would be ____________. time distance speed
natita [175]

Answer:

Distance

Explanation:

distance is in vertical axis,or y-axis and time is on the horizontal axis,or x-axis.

7 0
3 years ago
What are food source of calcium?
bearhunter [10]

Answer:

Milk

Explanation:

It can be milk and other foods similar to milk like ice cream, cheese, yogurt, etc. This is why people say milk is good for your bones cause it has calcium

5 0
3 years ago
Read 2 more answers
Other questions:
  • If a truck is travelling east on a straight road and travels 100 meters in 25s what is the truck's velocity?
    8·1 answer
  • A football is kicked into the air with a horizontal velocity of 20 m/s and a vertical velocity of 30 m/s what is the resultant v
    9·1 answer
  • A 0.150 kg baseball has 118 j of KE. how fast is the ball moving?(unit=m/s)
    7·1 answer
  • A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0055 m/s2 less than that at sea leve
    9·1 answer
  • What happens when a light ray passes through the focal point, and then reflects off of a convex mirror?
    14·1 answer
  • Electric power in a circuit is the rate at which _________.
    6·1 answer
  • A loaded flatbottom barge floats in fresh wa-ter. The bottom of the barge is 4.09 m belowthe water line. When the barge is empty
    11·1 answer
  • Would you rather have no air conditioning or no heating? Explain your answer
    11·2 answers
  • Quien me ayuda en una tarea de matemáticas de una figura geométrica que no se cómo se llama​
    12·2 answers
  • A 0.40 kg bead slides on a straight frictionless wire with a velocity of 3.50 cm/s to the right. The
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!