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
jek_recluse [69]
2 years ago
12

What is the change in weight of a hollow cylinder of height 8 cm and radius 3 cm when the air is pumped out of it

Physics
1 answer:
Trava [24]2 years ago
8 0

This question involves the concepts of density, weight, and volume.

The change in weight of the cylinder will be "2.72 x 10⁻³ N".

The change in weight of the cylinder will be equal to the weight of the air inside the cylinder which is being removed from it:

\Delta W = W_a

where,

  • \Delta W = change in weight of cylinder = ?
  • W_a = Weight of air inside cylinder = \rho Vg
  • \rho = density of air = 1.225 kg/m³
  • V = Volume of air inside the cylinder = πr²h = π(0.03 m)²(0.08 m) = 2.26 x 10⁻⁴ m³
  • g = acceleration due to gravity = 9.81 m/s²

Therefore,

\Delta W = W_a = \rho Vg\\\\\Delta W = (1.225\ kg/m^3)(2.26\ x\ 10^{-4}\ m^3)(9.81\ m/s^2)

<u>ΔW = 2.72 x 10⁻³ N</u>

Learn more about density here:

brainly.com/question/952755

You might be interested in
Which division of time on the geologic time scale is the shortest?
Scrat [10]

Explanation:

In geology, there are 5 divisions of time on the time scale. They are:

  1. eons
  2. eras
  3. periods
  4. epochs
  5. ages

Eons are the largest time period, while ages are the shortest time period. The rest of the above listed are in between the two.

8 0
3 years ago
Through what process is carbon pulled from the atmosphere in the carbon cycle
Andrei [34K]

Carbon is pulled from the atmosphere in the carbon cycle through the process of photosynthesis. Details about photosynthesis can be found below.

<h3>What is photosynthesis?</h3>

Photosynthesis is the process whereby green plants obtain their nutrition by utilizing energy from sunlight.

Green plants absorb carbon in the form of carbon dioxide from the atmosphere and use it in the photosynthetic process.

This means that one way that carbon is removed from the atmosphere during the carbon cycle is through photosynthesis.

Learn more about photosynthesis at: brainly.com/question/1388366

#SPJ1

7 0
3 years ago
2. What is the magnitude of the force a 1.5 C charge exerts on a 3.2 C charge
lesya [120]

The magnitude of the force is F=1.68×10 ^20  N

<u>Explanation:</u>

<u>Given data</u>

q1 =1.5  10 ^6 q2=3.2 10^6   r=1.5

<u>We have the formula</u>

By the coulomb's law

F= K. q1 ×q2 / r²

The K value is given by    

8.99  10^9 Nm²/ c²

substitute the values we get,

F= ( 8.99×  10^9 Nm²/ c²) ×(<u>1.5 ×10 ^6</u>)×(<u>3.2 ×10 ^6</u>)/ (1.6 m² )

F=1.68×10 ^20  N

The magnitude of the force is F=1.68×10 ^20  N

4 0
3 years ago
Why is the HR diagram important to scientists?
katovenus [111]
A. yeah is A. i bet my wifes life on
6 0
3 years ago
Read 2 more answers
Drift speed refers to the average distance traveled by a charge carrier per unit of time. Like the speed of any object, the drif
vovikov84 [41]

Answer:

Explanation:

there are many, many charge carriers moving directly throughout the entire length of the circuit. Current is that the rate at which charge crosses some extent on a circuit. A high current is that the results of several coulombs of charge crossover a cross section of a wire on a circuit. If the charge carriers are densely packed into the wire, then there doesn't need to be a high speed to possess a high current. That is, the charge carriers don't need to travel an extended distance during a second, there just has got to be tons of them passing through the cross section.

5 0
3 years ago
Other questions:
  • A doctor examines a mole with a 15.0 cm focal length magnifying glass held 13.5 cm from the mole. Where is the image? what is it
    15·1 answer
  • Please help, and show steps. Thank you very much!
    10·1 answer
  • Two charges separated by 1 m exert 1 N forces on each other. If the charges are pushed to 1/4m separation, the force on each cha
    7·1 answer
  • True or false? Nitrogen in the atmosphere is responsible for clouds and precipitation? If not what is?
    8·1 answer
  • A block slides on a table pulled by a string attached to a hanging weight. In case 1 the block slides without friction and in ca
    11·2 answers
  • A spring with a rest length of 0.7 m has a spring constant of 70 N/m. It is stretched and now has a length of 2.5 m. What is the
    13·1 answer
  • What are some examples of EM waves
    6·1 answer
  • I can fly but have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
    12·2 answers
  • 3. The atmospheres of Mars and Venus are mostly carbon dioxide. Earth'satmosphere contains only a fraction of a percent of carbo
    12·1 answer
  • PLZ! PLZ! PLZ! HELP! WILL GIVE BRAINLIEST! Scientific Claim Engaging in scientific argument is a critical piece to the applicati
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!