Answer:
Approximately .
Explanation:
Angular acceleration is equal to .
Apparently, for this question, the time taken is . The challenge is to find the change in angular speed over that period of time.
Let the time (in seconds) it took to complete revolutions be in the year 1906. In 2006 that number would be .
Each revolution is radians. revolutions will be an angular displacement of in radians. Angular speed is equal to .
The average angular speed in 1906 could thus be written as .
Similarly, the average angular speed in 2006 could be written as .
The difference between the two will be equal to:
.
Since the value of (about the same as the number of seconds in 365 days) is much bigger than , apply the approximation .
.
And that's approximately the average change in angular velocity over a period of 100 years. Apply the formula for average angular acceleration:
.
To solve the equation we proceed to use the law of conservation of the material, so
For A)
Solving for h,
For B)
First obtain x,
Then,
For 3)
<em>Greater than. Because the final distance is greather than 35mm.</em>
Answer:
•marine biology.
Explanation:
A mechanical engineer is a professional individual who ensures the design of a mechanical assembly as well as the monitoring of its realization. His role involves the manufacturing of a prototype and developing new products for the company. Responsible for manufacturing, he advises the company and customers and assesses the risks and techniques used for its development. Finally, he supervises the installation and the market penetration of the product, as well as its maintenance.
A mechanical engineer can collaborate with many useful and complementary professions such as designers or marketers, it ensures the appearance and technical operation of the product. It is a job under high responsibility with projects that can be large.
Finally, he can also work in the construction sector, in the automotive industry, biomechanics, shipbuilding, aerospace production and aeronautics, railways, mechanics and metallurgy, robotics, textile machinery, etc.
Answer:
Part a)
Part b)
v = 3.64 m/s
Part c)
Part d)
Explanation:
As we know that moment of inertia of hollow sphere is given as
here we know that
R = 0.200 m
now we have
now we know that total Kinetic energy is given as
Part a)
Now initial rotational kinetic energy is given as
Part b)
speed of the sphere is given as
v = 3.64 m/s
Part c)
By energy conservation of the rolling sphere we can say
Part d)
Now we know that