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3 years ago

Which class of organic molecules includes those whose main purpose is long-term energy storage?

Physics

1 answer:

omeli [17]3 years ago

3 0

Answer:

Fats.

Explanation:

A fat molecule which is called a Triglyceride consists of two main components which are glycerol and 3 fatty acids. Fats are solids and oils are liquids at room temperature. They also include saturated and unsaturated fats.

Cells store energy for long-term use in the form of lipids called fats which provides insulation from the environment for plants and animals.

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The same girl in number 3 (above) pushes another friend on the same skateboard.

LuckyWell [14K]

The mass of her friend is 28.57.

Force is a push or pulls upon an item because of the object's interaction with some other object. pressure is a power that can exchange the motion of an object. A force can reason an object with mass to alternate its speed, i.e., to boost up. pressure also can be described intuitively as a push or a pull. A force has each significance and course, making it a vector amount.

Calculation:-

given;

mass = ?

acceleration = 2.1 m/s

force = 60 N

Force = mass × acceleration

mass = force/acceleration

= 60 /2.1

= 28.57 kg

The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is not something that an object consists of or 'has in it. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.

Learn more about force here:-brainly.com/question/12970081

#SPJ9

8 0

1 year ago

A student is holding a marble in his hand. What are the equal and opposite forces that are acting on it?

Nesterboy [21]

Answer:

Gravity and his hand

Explanation:

4 0

2 years ago

In the earth-moon system the moon orbits the earth. What is the "centripetal" force causing the moon to stay in orbit around the

gavmur [86]

The centripetal force is the gravitational force of attraction between the Earth and the Moon.

Also, the gravitational force of attraction between the Earth and the Sun is the centripetal force that causes the Earth to stay in orbit around the Sun.

Also, the gravitational force of attraction between a TV satellite, a weather satellite, or a GPS satellite and the Earth is the centripetal force that causes each satellite to stay in orbit around the Earth.

4 0

2 years ago

A 4.80 Kg watermelon is dropped from rest from the roof of an 18.0 m building. Calculate the work done by gravity on the waterme

Nonamiya [84]

Answer:

Work, W = 846.72 Joules

Explanation:

Given that,

Mass of the watermelon, m = 4.8 kg

It is dropped from rest from the roof of 18 m building. We need to find the work done by the gravity on the watermelon from the roof to the ground. It is same as gravitational potential energy i.e.

W = mgh

$W=4.8\ kg\times 9.8\ m/s^2\times 18\ m$

W = 846.72 Joules

So, the work done by the gravity on the watermelon is 846.72 Joules. Hence, this is the required solution.

7 0

2 years ago

Which statement correctly distinguishes between all mechanical and all electromagnetic waves?

lutik1710 [3]

Answer: Mechanical waves carry energy through a medium; electromagnetic waves carry energy through media and space.

Explanation:

The waves which require medium to travel are known as mechanical waves. The waves carry energy forward by compression and rarefaction that is by changing density /pressure of medium particles.

Electromagnetic waves can transfer energy through space as well as medium. In an electromagnetic wave, electric field generates magnetic field and magnetic field generates electric field. Electric field and magnetic field are perpendicular to each other and to the direction of motion.

3 0

3 years ago

Read 2 more answers