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
HACTEHA [7]
3 years ago
12

The distance between the fixed point of a Celsius thermometer is20cm. what is the temperature when the mercury level is 4.5cm ab

ove the lower mark?​
Physics
1 answer:
galina1969 [7]3 years ago
8 0

Answer:

22.5°C

Explanation:

Given height of Celsius thermometer is 20 cm.

As we know the limit of a Celsius thermometer is 100°C

It is given that total height of thermometer is 20 cm.

So, this limit that is 100°C should be equal to 20 cm.

20\ cm\ =\ 100°C

1\ cm\ =\ \frac{100}{20}°C

1\ cm\ =\ 5°C

Now, we want to find the temperature when the level of mercury was 4.5 cm.

4.5\ cm\ =\ 5\times 4.5°C

4.5\ cm\ =\ 22.5°C

Hence, we have 22.5°C temperature in Celsius thermometer when height of mercury is 4.5 cm above the lower mark.

You might be interested in
What type of organization is used in a paragraph that lists similarities between two objects?
alekssr [168]
<span>A. Comparison 

</span>What type of organization is used in a paragraph that lists similarities between two objects? Comparison


NOT:
<span>B. Contrast 
C. Chronological order 
D. Cause and effect</span><span>
</span>
3 0
3 years ago
A parallel-plate capacitor has area A and plate separation d, and it is charged to voltage V. Use the formulas from the problem
Shtirlitz [24]

Answer:

U = (ε0AV^2) / 2d

Explanation:

Where C= capacitance of the capacitor

ε0= permittivity of free space

A= cross sectional area of plates

d= distance between the plates

V= potential difference

First, the capacitance of a capacitor is obtained by:

C = ε0A/d.

Starting at the formula , U= (CV^2)/2. Formula for energy stored in a capacitor

Substitute in for C:

U = (ε0A/d) * V^2 / 2

Hence:

U = (ε0AV^2) / 2d

3 0
3 years ago
What is pitch related to?
Jlenok [28]
Pitch is related to frequency
7 0
3 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect
beks73 [17]

Answer:

Speed of the alpha particle is v=1.8180\times 10^3m/sec      

Explanation:

We have given charge on alpha particle q=3.2\times 10^{-19}C

Mass of the alpha particle m=6.68\times 10^{-27}kg

Potential difference V=-3.45\times 10^{-3}volt

We have to find the speed of the alpha particle

From energy conservation we know that

\frac{1}{2}mv^2=qV

\frac{1}{2}\times 6.68\times 10^{-27}\times v^2=3.2\times 10^{-19}\times 3.45\times 10^{-3}

v=1.8180\times 10^3m/sec

4 0
3 years ago
9. Since current is the rate at which charge is flowing, if the current in the circuit decreases, what does that mean about the
TiliK225 [7]

Answer:

Electric current is defined as the rate of flow of electric charge in a circuit from point one point to another. This is carried by electrically charged particles within the circuit. Current is represented by the symbol I and its unit measured in Amperes. It is therefore related to the voltage and resistance of the circuit. If the current in the circuit reduces, the rate at which the charge and current on the capacitor reduces also proportionally in an exponential manner.

Explanation:

Since a decrease in the flow of current in the circuit is observed, the implication for the rate at which the charge and voltage on the capacitor is also an exponential decrease in the rate of flow with time. This is because the electric current is directly proportional to the electric charge and the time.

5 0
3 years ago
Other questions:
  • Would the friction force increase, decrease, or stay the same if Marco added two more blocks to the sled or wagon? Explain your
    12·1 answer
  • Consider the following statements about Newton's 2nd law in general. Select all of the statements that are true. Note, there may
    15·1 answer
  • A man pushes with a force of 300 N on a bookcase of mass 75 kg. The coefficient of static friction between the bookcase and the
    14·2 answers
  • A lightning bolt occurs when billions of protons are transferred at the same time. ____________________
    13·1 answer
  • A push or a pull on an object is known as a(n)
    6·2 answers
  • Which of the following are not likely to form bonds?
    8·2 answers
  • 6) A person with mass 50.0 kg, standing still, throws an object with mass 12.0
    9·1 answer
  • Particle A of charge 2.79 10-4 C is at the origin, particle B of charge -5.64 10-4 C is at (4.00 m, 0), and particle C of charge
    13·1 answer
  • ____ is the study of things getting faster as they move.
    5·2 answers
  • A diver springs upward from a board that is 4.40 m above the water. At the instant she contacts the water her speed is 13.5 m/s
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!