Explain why fs usn

In this section Topic Description User-level Administration of Disk Quotas How to get more free disk space after exceeding the quota allowance. System-level Administration of Disk Quotas The system administrator can set quotas for specific users on a volume. The administrator can also set default quotas for the volume. Disk Quota Limits Describes two types of disk quota limits and how disk quota limits are measured. Disk Quota Interfaces Interfaces used with disk quotas. Is this page helpful?

Yes No. By Prof. Liwayway Memije-Cruz 2. If a car needs to stop at a stop sign, it slows because of the friction between the brakes and the wheels. If you run down the street and stop quickly, you can stop because of the friction between your shoes and the cement. Friction is still there, but the liquid makes the surfaces smoother and the friction a lot less. Less friction means it is harder to stop. When water coats that surface, the tire can't obtain traction.

The low friction thing happens to cars when it rains. That's why there are often so many accidents. Even though the friction of the brakes is still there, the brakes may be wet, and the wheels are not in as much contact with the ground. The water lifts the tire up from the surface, and the vehicle begins to hydroplane. Hydroplaning is more likely to happen if your vehicle has narrow tires. Worn tires are more dangerous in wet conditions.

Certain tire tread patterns are better at channeling water away than others. All wheel driven vehicles are more likely to hydroplane than two- wheel drive vehicles, because their computerized differentials may shift power from the front to the rear tires, creating a hydroplaning situation. Heavy vehicles are less prone to hydroplaning.

All machines make use of friction and without it would have no use. Without friction we are handicap. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it becomes difficult to walk due to low friction of ice. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail.

A horse can not pull a cart unless friction furnishes him a secure Foothold. In this way some useful energy is wasted as heat energy. The parts of machines which are moving over one another must be properly lubricated by using oils and lubricants of suitable viscosity. Proper greasing between the sliding parts of machine reduces the friction In machines where possible, sliding friction can be replaced by rolling friction by using ball bearings. It acts between objects already in motion.

When two objects are not moving relative to each other, a force opposes or resists the lateral movement of the objects. Here: 1. Becauseof Static friction we wereunableto movetheobject. When it moved, we had overcomethekinetic friction which waslessthen static friction. If thecoefficient of static friction ishigh, it means, a lot of forcewill berequired to overcomethisstatic condition of theobject and to get it in motion.

It is very interesting to note that it is easier to drive through soft dirt if the tire also has less air, this is because the traction is increased which leads to improved driving. Total views Using the data obtained through the Labquest2 computer system, my group and I calculated exactly the initial momentum and kinetic energy, final momentum and kinetic energy, and percent of momentum and kinetic energy that was lost through these collisions.

We can say that our first hypothesis was accepted since in collisions 1 and 2 the total initial and final momentum was similar values. My simple task was to pop a balloon. The item we used to pop the balloon was a mousetrap. I am going to go step by step through how I created my Rube Goldberg machine. First, we started out with a ramp that we dropped the ball on. That was our potential energy.

That was mechanical energy. After that, the ball went through an elbow and…. Well I sure have, this is all due to centripetal force. This is a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

The curves of these loops on rollercoasters resemble the curves of a circle. The coaster is continuously changing its direction while…. D Why: not matter an object is still or is in motion, the object has inertia all the time. D Why: the ship is moving at a constant speed, which is in a balanced status. For the athlete, it would be likely to do a long jump on ground. Essays Essays FlashCards. Browse Essays.

Sign in. Home Page Introductory physics. Page 1 of 42 - About Essays. Roller Coaster Physics Essay Physics plays an important role in the mechanics of a roller coaster. Read More. Words: - Pages: 5. Essay On Kinetic Friction Purpose: To study sliding friction and to determine the coefficients of static and kinetic friction.