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
Mkey [24]
3 years ago
10

Two wheel gears are connected by a chain. The larger gear has a radius of 8 centimeters and the smaller gear has a radius of 3 c

entimeters. The smaller gear completes 24 revolutions in 20 seconds.
What is the linear velocity of each of the gears in centimeters per minute?

A.The linear velocity of the smaller gear is 144π centimeters per minute. The linear velocity of the larger gear is 54π centimeters per minute.
B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.
C. The linear velocity of the gears is the same. The linear velocity is 7.2π centimeters per minute.
D. The linear velocity of the smaller gear is 432π centimeters per minute. The linear velocity of the larger gear is 144π centimeters per minute.

Please any help would be much appreciated. will mark as brainiest
Physics
1 answer:
dezoksy [38]3 years ago
8 0

Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

Explanation:

As we know that the small gear completes 24 revolutions in 20 seconds

so the angular speed of the smaller gear is given as

\omega = 2\pi\frac{24}{20}

\omega = 2.4\pi rad/s

Now we know that the tangential speed of the chain is given as

v = r \omega

so we have

v = (3 cm)(2.4\pi)

v = 7.2 \pi cm/s

v = 432\pi cm/min

Since both gears are connected by same chain so both have same linear speed and hence correct answer will be

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

You might be interested in
The center-seeking change in velocity of an object moving in a circle is:
NeTakaya

The center-seeking change in velocity of an object moving in a circle is the centripetal acceleration.

So, by Newton's laws, we know that an object moving with a given velocity will remain in constant motion with a constant velocity until we apply an acceleration.

So we define acceleration as the rate of change of the velocity, also remember that velocity is a vector (has magnitude and direction), so, if there is a change the direction of the velocity, we have an acceleration that causes that.

In circular motion, the velocity vector is always perpendicular to the radius of the circle, and it can only be possible if the velocity direction is changing constantly. This will happen because of something called centripetal acceleration.

This acceleration points radially inwards (to the center of the circle) so is also perpendicular to the velocity of the moving object, and this is what causes the constant change in the direction of the velocity of the moving object.

Just to give an example, if you have a string with a mass on one end, and with your hand, you rotate the mass (from the string), the tension of the string would be the centripetal acceleration.

If you want to learn more about circular motion, you can read:

brainly.com/question/2285236

5 0
2 years ago
Read 2 more answers
Another circuit question. So far I've incorrectly done this one 3 out of 5 times lol
marta [7]
Hope this helps you.

7 0
3 years ago
When you mix two gases what can you predict about the conservation of volume in this case?
o-na [289]
Amagat's law of additive volumes states that we can simply add up the individual volumes of each gas (provided they are at the same temperature and pressure) to get the total volume of the mixture. Conservation of volume is an acceptable assumption for gases (but not always for liquid mixtures). This works for gases since the molecules are very small and only take up a minimal amount of space in a gas.
3 0
3 years ago
PHYSICAL SCIENCE: How does a nuclear reactor convert nuclear energy into thermal energy?
HACTEHA [7]

I'm not sure if nuclear energy is turned into thermal energy using this method, but it definitely makes energy; the reactor fissions a uranium-235 isotope into multiple pieces and controls the energy. The reactor core sits inside a steel pressure vessel, so that water around it remains liquid even at the operating temperature of over 320°C.  Steam is formed either above the reactor core or in separate pressure vessels, and this drives the turbine to produce electricity.  The steam is then condensed and the water recycled.

8 0
3 years ago
Read 2 more answers
Four +2 μC charges are placed at the positions (10 cm, 0 cm), (−10 cm, 0 cm), (0 cm, 10 cm), and (0 cm, −10 cm) such that they f
Rudiy27

Answer:

c. The force on the charge at the origin is 0

Explanation:

We know by Coulomb's law:

Force between to two charges (here repulsive since both are +ve) sperated by distance 'r' in space is:

F = \frac{1}{4\pi \epsilon_0} \frac{Q_1.Q_2}{r^2}

where:

\epsilon_0= permittivity of free space

Q_1, Q_2 being the charges

In this case the product Q_1\times Q_2 remains constant and also the distance "r" is constant which yields the force identical in each case.

Since identical charges are kept at all the four corners of a diamond shape and are equidistant from the origin where another charge of +5 μC is kept, all the charges from the vertices will apply  equal repulsive force on the charge at origin cancelling out the force vectors which yields the force to be zero.

4 0
3 years ago
Other questions:
  • A piece of fruit is hanging from a tree what energy is being used
    9·1 answer
  • A 26.3 kg object is traveling at 21.0 m/s north. What average net force is required to bring this object to a stop in 2.60 secon
    13·1 answer
  • Hartman value profile
    11·1 answer
  • A thin plate 6 ft long and 3 ft wide is submerged and held stationary in a stream of water (T = 60°F) that has a velocity of 17
    8·1 answer
  • Help pleaseee is this correct?​
    14·1 answer
  • Which of these is an experiment generally regarded as being first carried out by James Joule?
    14·2 answers
  • Two identical balls are thrown vertically upward. the second ball is thrown with an initial speed that is twice that of the firs
    11·1 answer
  • 2. A rock is shot straight up into the air with a slingshot that had been stretched 0.30 m. Assume
    10·2 answers
  • Which changes of state occur between solids and gases? Check all that apply.
    6·2 answers
  • A 0.70kW vacuum cleaner is used for 20 minutes. How much energy does it use? Give your answer in
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!