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
Naily [24]
3 years ago
7

Which one of the following indicates a drop in temperature? A. The alcohol in a thermometer expands. B. The brass on a bent bime

tallic strip is on the outside curve. C. The column of liquid in a thermometer moves up three degrees. D. A bimetallic strip bends so that the steel is on the outside curve.
Physics
2 answers:
solmaris [256]3 years ago
7 0

Answer:

A bimetallic strip bends so that the steel is on the outside curve.

Explanation:

A bimetallic strip is a combination of two different metals. The linear  coefficient of expansion of various metals are different, depending on their characteristics. For example, when a bimetallic strip of brass and steel are taken, thermal expansion coefficient of brass is more than that of steel.

That implies brass expands more than steel, for a given amount of heat supplied. So brass will curve outward since it becomes longer compared to steel. Steel will curve inwards.

Similarly, for cooling process where a drop in the temperature occurs, brass contracts more compared to steel and so Steel will be on outside curve.

Travka [436]3 years ago
3 0
D. A bimetallic strip bends so that the steel is on the outside curve.
You might be interested in
Need help with ASAP please
Oksanka [162]

Answer:

first blank is chemical second blank is kinetic energy

8 0
3 years ago
Light of wavelength 500nm is passed through a diffraction grating which has 400 lines per mm. What is the angular spectrum betwe
Citrus2011 [14]

Answer:

because of the gravity of the earth

8 0
2 years ago
Which rocky planet has the strongest magnetosphere?
Nikolay [14]
Earth it has the strongest magnetosphere
3 0
3 years ago
Which of the following is not a vector quantity?
baherus [9]

Answer: The answer is density

3 0
3 years ago
A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the speed of sound in air. A woman,
lina2011 [118]

Answer:

44.1 m

Explanation:

<u>Given:</u>

  • V_a = speed of sound in air = 343 m/s
  • V_r = speed of sound in the rod = 15V_a
  • \Delta t = times interval between the hearing the sound twice = 0.12 s

<u>Assumptions:</u>

  • l = length of the rod
  • t = time taken by the sound to travel through the rod
  • T = time taken by the sound to travel to through air to the same point = t+\Delta t = t+0.12\ s

We know that the distance traveled by the sound in a particular medium is equal to the product of the speed of sound in that medium and the time taken.

For traveling sound through the rod, we have

l=V_r t\\\Rightarrow t = \dfrac{l}{V_r}..........eqn(1)

For traveling sound through the air to the women ear for traveling the same distance, we have

l=V_aT\\\Rightarrow l=V_a(t+0.12)\\\Rightarrow l=V_a(\dfrac{l}{V_r}+0.12)\,\,\,\,\,\,(\textrm{From eqn (1)})\\\Rightarrow l=V_a(\dfrac{l}{15V_a}+0.12)\\\Rightarrow l=\dfrac{l}{15}+0.12V_a\\\Rightarrow l-\dfrac{l}{15}=0.12V_a\\\Rightarrow \dfrac{14l}{15}=0.12V_a\\\Rightarrow l = \dfrac{15}{14}\times 0.12V_a\\\Rightarrow l = \dfrac{15}{14}\times 0.12\times 343\\\Rightarrow l = \dfrac{15}{14}\times 0.12\times 343\\\Rightarrow l = 44.1\ m

Hence, the length of the rod is 44.1 m.

4 0
3 years ago
Other questions:
  • A horizontal force of 90.0 N is required to push a 75kg object along a horizontal surface at a constant speed. What is the magni
    13·1 answer
  • Identify the direction (from high to low, from low to high) that heat is normally transferred and give an example. (WILL GIVE BR
    12·1 answer
  • Can you please explain me how to do integration in physics in a easy way?
    8·1 answer
  • 1. Charges acquired by rubbing is called_____
    15·2 answers
  • Newton began his academic career in 1667. For how long was he a working scientist? Was he a very productive scientist?
    11·1 answer
  • A proton is ejected from the sun at a speed of 2 x 10^6 m/s. How long does it take for this proton to reach earth? Answer in hou
    13·1 answer
  • A car starts from the state of xestIf its velocity becomes 70 km/hr in 6 minutes, i) what is the accordine acceleration of F the
    9·1 answer
  • If a car has a mass of 1,000 kilograms, and a velocity of 35 m/s. What is its momentum?
    7·1 answer
  • The liquid pressure
    12·2 answers
  • What is the voltage drop across the 10.0 2 resistor?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!