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
ddd [48]
3 years ago
10

A 0.389 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plun

ger. The cylinder comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.41 mm and is frictionless. Neither the plunger nor the metal cylinder allow any air to flow around them. If the plunger is suddenly pushed upwards, increasing the pressure between the plunger and the metal cylinder by a factor of 2.79 , what is the initial acceleration a of the metal cylinder? Assume the pressure outside of the tube is 1.00 atm and that the top of the tube is open to the air.
Physics
1 answer:
Masteriza [31]3 years ago
5 0

Answer:

The initial acceleration is 97.96 m/s²

Explanation:

Given data:

m = mass of metal cylinder = 0.389 kg

r = radius of plastic tube = 7.41 mm = 7.41x10⁻³m

P₀ = pressure = 1 atm = 1.013x10⁵Pa

The pressure inside the tube is:

P=P_{0} +\frac{mg}{\pi r^{2} } =1.013x10^{5} +\frac{0.389*9.8}{\pi (7.41x10^{-3})^{2}  } =1.234x10^{5} Pa

The pressure applied by the plunger is:

P_{p} =2.79*P=2.79*1.234x10^{5} =3.443x10^{5} Pa

The difference between the pressure applied by the plunger and the pressure inside the tube is:

delt-P=3.443x10^{5} -1.234x10^{5} =2.209x10^{5} Pa

The initial acceleration is:

a=\frac{delta-P*A}{m} =\frac{2.209x10^{5}*\pi  *(7.41x10^{-3})^{2}  }{0.389} =97.96m/s^{2}

You might be interested in
Which direction does air circulate into low pressure zones in the northern and southern hemispheres
photoshop1234 [79]
Warm air goes up cool air goes down
5 0
3 years ago
Read 2 more answers
During a demonstration of the gravitational force on falling objects to her class, Sarah drops an 11 lb. bowling ball from the t
leonid [27]

The instant it was dropped, the ball had zero speed.

After falling for 1 second, its speed was 9.8 m/s straight down (gravity).

Its AVERAGE speed for that 1 second was (1/2) (0 + 9.8) = 4.9 m/s.

Falling for 1 second at an average speed of 4.9 m/s, is covered <em>4.9 meters</em>.

ANYTHING you drop does that, if air resistance doesn't hold it back.

7 0
3 years ago
Read 2 more answers
If the mass of a 1.8 g paperclip was able to be completely converted to energy, how much energy would you obtain?
Anton [14]

Answer:

E=1.62\times 10^{14}\ J

Explanation:

Given that,

The mass of the paperclip, m = 1.8 g = 0.0018 kg

We need to find the energy obtained. The relation between mass and energy is given by :

E=mc^2

Where

c is the speed of light

So,

E=0.0018\times (3\times 10^8)^2\\\\E=1.62\times 10^{14}\ J

So, the energy obtained is 1.62\times 10^{14}\ J.

7 0
3 years ago
Prompt Write about what you have learned about parts of the atom and the
Kay [80]

Answer:

The table can be used to predict the properties of elements, even those that have not yet been discovered.  Columns (groups) and rows (periods) indicate elements that share similar characteristics. The table makes trends in element properties apparent and easy to understand. The table provides important information used to balance chemical equations. Atoms are important because they form the basic building blocks of all visible matter in the universe. There are 92 types of atoms that exist in nature, and other types of atoms can be made in the lab. The different types of atoms are called elements. Hydrogen, gold and iron are examples of elements comprised of unique types of a single kind of atom.

Explanation:

5 0
2 years ago
All the bats living in a cave form a _____ of bats in the cave ecosystem.
miv72 [106K]

All the bats living in a cave form a __colony__of bats in the cave ecosystem.

7 0
3 years ago
Other questions:
  • What is an example of a renewable natural resource?
    11·1 answer
  • when an object is charged by contact, how does the kind of charge transferred compare to that on the object giving the charge?
    13·1 answer
  • When temperature increases the kinetic energy of the particles in a material, true or false?
    14·1 answer
  • Kinetic Energy HELP! Brainly included
    14·1 answer
  • Activity C (continued from previous page)
    6·1 answer
  • The chart shows data for a moving object.
    15·1 answer
  • How does the declining biodiversity affect us?
    6·2 answers
  • Please help me solve this! :)
    10·1 answer
  • A boulder of mass 4 kg rolls over a cliff and reaches the beach below with a velocity of 20 metres per second minus 1.
    11·1 answer
  • When two surfaces interact, some mechanical energy leaves the system as thermal energy due to ________.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!