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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.
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aleksklad [387]

Answer:

Inertia is the tendency of all objects to resist any change in motion. Inertia causes a moving object to stay in motion at the same velocity (speed and direction) unless a force acts on it to change its speed or direction. It also causes an object at rest to stay at rest.

4 0
2 years ago
Hydrogen gas (H2) can be found in trace amounts in Earth’s atmosphere. Which of these statements describes a physical property o
notka56 [123]
<span>Hydrogen gas (H2) can be found in trace amounts in Earth’s atmosphere.

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7 0
3 years ago
How many drops of water are in a 1.0 L bottle? (Hint: Start by estimating the diameter of a drop of water.)
o-na [289]

Answer:

N = 2000 drops approx with 1 cm diameter each

Explanation:

Let the diameter of one drop is 1 cm

so volume of one drop is given by

V = \frac{1}{6}\pi d^3

now we have

V = \frac{1}{6}\pi(0.01)^3

V = 0.53 \times 10^{-6} m^3

now in 1L of liquid let say N drops are there

so we have

1L = 10^{-3} m^3

now we have

N = \frac{10^{-3}}{0.53 \times 10^{-6}}

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so it will have approx 2000 drops in it with diameter 1 cm each drop

7 0
3 years ago
Read 2 more answers
Please answer ASAP, and please don't joke around and actually do answer my question. I will give you brainliest if you answer it
hammer [34]

Answer:

30 feet

Explanation:

First off, if they are throwing at 12.0 m/s and it takes 2.5 seconds. It will be the act of multiplication.

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8 0
3 years ago
Does a compressed spring transfer elastic energy to its surroundings?
shusha [124]

Answer:

Yes

Explanation:

5 0
3 years ago
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