Why is the law of buoyancy considered a law?

Match the scenario to the type of potential energy represented.

Phantasy [73]

Explanation:

A battery sits in an iPod before the iPod is turned on Chemical

A man at a carnival lifts a hammer high over his head

before swinging it down onto a pad. Gravitational

A positively charged particle is slowly moved away

from a strong, negatively charged plate Electric

The string of a bow and arrow is pulled tight. Elastic

Energy is defined as the ability to do work. There are two main forms of energy which are:

Potential energy
Kinetic energy

Chemical energy energy is a form of potential energy produced through chemical reactions. A car battery is an electrochemical that converts chemical energy into electrical energy for use in the iPod. The battery is made up of electrodes through which electron flows in one direction and current is generated by the potential difference set up

Gravitational energy is a form of potential energy that tends to pull all bodies to the center of the earth. It is an attractive force.

Electrical energy is a form of energy produced through the flow of electric current in a body. As the positive charge moves away from the strong negative plate, an electric current is produced.

Elastic energy is a potential energy stored in elastic bodies that can be stretched and are not plastic.

Learn more;

Energy brainly.com/question/9231468

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4 0

3 years ago

Why does gas have the most energy but moves the slowest

Ede4ka [16]

Gases have heavier molecules. Since all gases have the same average kinetic energy at the same temperature, lighter molecules move faster and heavier molecules move slower on average.

4 0

2 years ago

A 1.0-gram sample of solid iodine is placed in a tube and the tube is sealed after all of the air is removed. The tube and the s

Anarel [89]

Answer:

weight of sealed tube that is filled with iodine gas is 27 gm

Explanation:

As tube is closed therefore mole of gas is enclosed in a tube, thus it will only converted into gas ( Iodine Gas). In the gas form it will going to exert pressure on the wall of a tube. From conservation of mass principle weight of tube remain same, there will be no change in the weight of gas. therefore weight of sealed tube that is filled with iodine gas is 27 gm

3 0

3 years ago

A dragster in a race accelerated from rest to 60 m/s by the time it reached the finish line. The dragster moved the distance fro

Andreyy89

Answer:

l don't now but l think the is 160

Explanation:

160 or 810

6 0

3 years ago

A student of weight 678 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude

baherus [9]

Answer:

(a) Magnitude of seat force at lowest point = 678 + 92 = 770

(b) Force exerted by the seat (highest point) = 310 N

(c) Force exerted by seat (lowest point) = 1046 N

Explanation:

At the highest point the magnitude of force by the seat = 586 N

The weight of the student = 678 N

Thus, at the highest point, the difference in this force is due to the centrifugal force acting on the boy. This can be calculated as follows:

Centrifugal Force = 678 - 586 = 92 N

(a) The magnitude of force on the student by the seat at the lowest point will have to appose both the student's weight and centrifugal force acting towards the ground. This would mean:

Magnitude of seat force at lowest point = 678 + 92 = 770 N

(b) If the wheel's speed is doubled, the centrifugal force will change accordingly. The equation of centrifugal force is given below:

$F = m * v^2 / r$

We can see from this that the force is directly proportional to the square of the velocity. So if the velocity is doubled, the centrifugal force increases four times.

So at the highest point the centrifugal force will decrease the force of weight acting on the seat. The seat force would then be:

Force exerted by the seat = Weight - Centrifugal force

Force exerted by the seat = 678 - (4 * 92)

Force exerted by the seat (highest point) = 310 N

(c) The force exerted by the seat at the lowest point will be the centrifugal force plus the weight.

This is:

Force exerted by seat = Centrifugal force + Weight

Force exerted by seat = (4 * 92) + 678

Force exerted by seat (lowest point) = 1046 N

5 0

3 years ago