Understanding that if we say something unkind to someone else his or her

How is a flywheel constructed to maximize its rotational inertia?

BigorU [14]

Answer:

It is constructed with a high mass and a high raidus.

Explanation:

The rotational inertia I for every object is calculated as:

cMR^2 = I

where c is a constant, M is the mass of the object and R the radius of the object.

So, for a flywheel, the rotational inertia is calculated as:

I = $\frac{1}{2}MR^2$

Then, for constructed a flywheel with the maximun rotational inertia we have to set the maximum mass and the maximun radius.

6 0

3 years ago

A scientist observed the formation of hundreds of maggots and many flies on a rotting meat slice exposed to the environment. Wha

Phantasy [73]

Female flies are the one that are saddle with the responsibility of laying eggs during reproduction. The female usually look for a warm and moist place that have abundance food source for laying the eggs. The eggs laid by by the flies transformed into larva, which is also called maggots and the maggots turn into flies.

8 0

4 years ago

How long is an open-open pipe if the fundamebntal frequency is 60Hz. (Hint: Speed of Sound in the Air is 340m/s)

kifflom [539]

Fundamental frequency, f1=v/2l

Let the length of the pipe be ‘l’

By given: v=340m/s, f1=60Hz

Thus, 60=340/2l

60=170/l

l=170/60=17/6=2.8333

The length of the pipe is 17/3=2.8333m.

3 0

3 years ago

A kayaker needs to paddle north across a 100-m-wide harbor. The tide is going out, creating a tidal current that flows to the ea

Savatey [412]

Answer:

$41.81^{\circ}$

Explanation:

The tidal current flows to the east at 2.0 m/s and the speed of the kayaker is 3.0 m/s.

Let Vector $\overrightarrow{OA}$ is the tidal current velocity as shown in the diagram.

In order to travel straight across the harbor, the vector addition of both the velocities (i.e the resultant velocity, $\vec {R}$ must be in the north direction.

Let $\overrightarrow{AB}$ is the speed of the kayaker having angle \theta measured north of east as shown in the figure.

For the resultant velocity in the north direction, the tail of the vector $\overrightarrow {OA}$ and head of the vector $\overrightarrow{AB}$ must lie on the north-south line.