Energy can't be created or destroyed - Law of Conservation of Energy.

If this is true, where does the mechanical energy go when skateboarding? Eventually the skateboarder will slow down and stop if she doesn't add more mechanical energy by pushing. Choose the most correct statement below.

Energy isn't conserved and actually gets used up.

Mechanical Energy converts into potential energy and then she stops.

Mechanical Energy gets converted into thermal energy through friction.

explain your answer

Answers

Answer 1

Answer: Mechanical Energy gets converted into thermal energy through friction

Explanation: when the skateboard is rubbing against whatever it’s rolling on it creates friction which slows down the skateboard, the mechanical energy is then converted into thermal energy. If you’ve ever touched the bottom of a wheel after going fast it typically feels a little warm.

Hope this helped

Answer 2

The mechanical energy gets converted into thermal energy through friction, it’s a form of kinetic energy.

Related Questions

Two girls are pulling on opposite ends of a thick rope. Both girls are pulling
on the rope with the same force but in opposite directions. If both girls
continue to pull with the same force, what will MOST likely happen? *
a. One girl will pull the other toward her
b. Both girls will stay in the same place
c. Gravity will cause the rope to sag
d. The rope will break

Answers

Answer:

Explanation:

It the same amount of force is being used it will cancel each other out.

I need help with question ii) Calculate the speed of these radio waves.
I don't know if I started it right.... I need help plss!!!

Answers

Answer:

Speed = Wavelength x Wave Frequency. In this equation, wavelength is measured in meters and frequency is measured in hertz (Hz), or number of waves per second. Therefore, wave speed is given in meters per second, which is the SI unit for speed.

A glass rod is rubbed briefly with silk and the rod becomes able to attract and lift a number of small pieces of paper. If the rod is rubbed with silk for a longer period of time, explain what will happen and why.
QUICKLY PLEASE!

Answers

Answer:

it will have a stronger attraction force

Explanation:

If the rod is rubbed with silk for a longer period of time, then it attract large number of small pieces of paper.

When A glass rod is rubbed briefly with silk, then glass rod is heated because of rod become positively charged. That positively charged glass rod attracts the uncharged pieces of paper because some of the electrons present in the paper accumulate at the end near the rod.

Learn more:

https://brainly.com/question/13822373

An auto company technician is trying to relate a car’s damage in a crash test to the kinetic energy of the car on impact. In addition to the mass of the car, what ratio will the technician need in order to determine to complete his study? The ratio of time to speed, weight to mass, distance to time, or acceleration to speed. Explain why.

Answers

Answer:

????????????????

Explanation:

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question 1: what happens if our eyes are not focused on your target?

question 2: using what you know about basketball, why is passing often more efficient than dribbling the basketball

Answers

Answer:

You can get hit or miss your shot

it makes it harder for the other person to get the ball

Explanation:

Scientists have sent an unmanned space vehicle to Mars to investigate the properties of the planet. Mars' gravitational field is 38% the strength of Earth's gravitational field. How will the weight and mass of the vehicle change on Mars?
A) The mass will increase, the weight will increase
B) The mass will decrease, the weight will decrease
C) The mass will remain the same, the weight will decrease
D) The mass will increase, the weight will remain the same

Answers

C because the mass doesn't change, the vehicle doesn't shrink, but the weight decreases.

Can you help me? Thanks! 10+ points!

Answers

Explanation:

velocity: average velocity equals Displacement /change in time.

Kinetic energy: K=1/2mv^2 (m = Mass) ( v = Velocity).

speed using the kinetic energy is also KE =1/2mv^2

(M in Kg) (V in m/s)

If u need any other help I’d help ! Honestly the person above me answered but feel free to message me if u need help ! I don’t really need the points !

Which technological advancement made the Pony Express unnecessary?
Steamships
Cotton Gin
Telegraph
Steel Plow

Answers

Telegraph! Because telegraphs were used to communicate and to (at that time) send messages rapidly.

Answer: Option (C) is correct, Telegraph

Explanation: Hope it helps!

Good luck!!!

Calculate: The net force on a rock with a mass of 2.0kg is 19.6N. What is the acceleration of the rock?

Answers

Answer:

the acceleration is 9.8

Explanation: F = mA, 19.6 =2A, A = 9.8 m/s^2

which is the stronger acid?
A pH 1
B pH 4
C pH 8
D pH 13

Answers

A ph 1 Jxdjjdxkxkxkslxlxkxjbx

Answer is A. pH1 ;):)

Plz help with these 4

What are the characteristics of bones? (list 7)

What role do joints play?

What are the two types of joints?

What are ligaments?

Answers

Answer:

1) The human skeleton performs six major functions: support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation. protection of internal organs

2) Joints are where two bones meet. They make the skeleton flexible — without them, movement would be impossible. Joints allow our bodies to move in many ways.

3)A joint is a point where two or more bones meet. There are three main types of joints; Fibrous (immovable), Cartilaginous (partially moveable) and the Synovial (freely moveable) joint

4)A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

Explanation:

go-gle your welcome ;)

1)
They are lightweight yet strong and hard, and serve multiple functions. Bone tissue (osseous tissue) is a hard tissue, a type of specialized connective tissue. It has a honeycomb-like matrix internally, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells.

2) Joints are functional junctions between two or more bones. Joints bind the skeleton together, to give structure and allow muscles to move bones to perform certain tasks such as running, reaching and grasping. There are many types of joints the most common of which are synovial joints

3) A joint is a point where two or more bones meet. There are three main types of joints; Fibrous (immovable), Cartilaginous (partially moveable) and the Synovial (freely moveable) joint.

4) A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.

(Hope this help a little bit)

Based on Newton’s 3rd Law of motion, if an archer shoots an arrow at the target, the action force is the bowstring against the arrow. Explain where the reaction force can be found.

Answers

Answer:

the reaction force is the arrows push against the bow sting

Explanation:

the two objects must react the same , bowstring and arrow.

Answer:

the reaction force is the arrows push against the bow sting

the two objects must react the same , bowstring and arrow.

1. body composition the amount of calories the body uses when it's at rest
2. isometric exercises the amount of fat compared to non-fat tissue in the body
3. isotonic exercises resistance training that does not involve movement
4. resting metabolic rate a harmful increase in blood pressure when a person holds his breath during resistance training
5. Valsalva Maneuver resistance training that involves movement

Answers

Answer:

1. body composition 1

2. isometric exercises 3

3. isotonic exercises 4

4. resting metabolic rate 2

5. Valsalva Maneuver 5

Explanation:

Look at the vocab definitions

Answer:

1. body composition 3 resistance training that involves movement

2. isometric exercises 5 a harmful increase in blood pressure when a person holds his breath during resistance training

3. isotonic exercises 2 resistance training that does not involve movement

4. resting metabolic rate 1 the amount of fat compared to non-fat tissue in the body

5. Valsalva Maneuver 4 the amount of calories the body uses when it's at rest

Explanation:

vocabs match with the term next to it

what are two roles of bacteria in a nitrogen cycle

Answers

Answer:Nitrogen-fixing bacteria convert free nitrogen gas into nitrogen compounds. ... Bacterias that are decomposers recycle nitrogen compounds in the soil by breaking down animal wastes and dead plants and animals. 3. Other bacteria break down nitrogen compounds and release free nitrogen back into the air.

Explanation:

"The nitrogen fixing and bacteria of decay" is the two major role of bacteria in nitrogen cycle."

What is nitrogen fixing?

Nitrogen fixing can be define as the process in which It is possible to see nitrogen converting to nitrate.

What is bacteria of decay?

Bacteria of decay can be define as the process in which it is possible to see nitrogen waste converting to ammonia.

What is nitrogen?

Nitrogen can be referred as element which is kept in boron family in the periodic table.

Therefore, the two role of bacteria in a nitrogen cycle is bacteria of decay and nitrogen fixing.

To know more about nitrogen fixing click here.

https://brainly.com/question/1615727.

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What is a way to make magnets?

Heating
Pressure
Freezing

Answers

Answer:

Heating is the answer

Explanation:

I took the quiz and i know its a late response

Freezing is a way to make magnets from ferromagnetic substance.

What is Curie temperature?

Curie point, also known as Curie Temperature, is the temperature at which the magnetic characteristics of some magnetic materials abruptly change. Remnant magnetism manifests in rocks and minerals below the Curie point, which for magnetite, a common magnetic mineral, is approximately 570 °C (1,060 °F).

In some magnetic materials, atoms that act as small magnets spontaneously align themselves below the Curie point, which for iron is 770 °C (1,418 °F). Because the atomic magnets in each microscopic region (domain) of ferromagnetic materials, such as pure iron, are aligned in the same direction, their magnetic fields reinforce one another.

Learn more about Curie temperature here:

https://brainly.com/question/14476599

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Describe how noise-cancelling headphones modify the sound waves around the user. Your answer should be three to four sentences in length and contain proper grammar and punctuation.

Answers

Answer: Describe how noise-cancelling headphones modify the sound waves around the user. Your answer should be three to four sentences in length and contain proper grammar and punctuation? How Noise-canceling Headphones Work Noise-canceling Headphones Bose was the first company to introduce noise-canceling headphones. Bose was the first company to introduce noise-canceling headphones. PHOTO COURTESY CONSUMER PRODUCTS Unfortunately for music lovers, many types of ambient sounds can interfere with or even block the sounds coming through their headphones. If you have ever tried to listen to a CD or MP3 player on a plane, then you know the problem well: The roar of the engines makes it difficult to hear what's being piped through the speakers -- even when those speakers are situated in or on your ear. Fortunately, noise-canceling headphones can provide a more enjoyable listening experience. Noise-canceling headphones come in either active or passive types. Technically speaking, any type of headphones can provide some passive noise reduction. That's because the materials of the headphones themselves block out some sound waves, especially those at higher frequencies. The best passive noise-canceling headphones, however, are circum-aural types that are specially constructed to maximize noise-filtering properties. That means they are packed with layers of high-density foam or other sound-absorbing material, which makes them heavier than normal headphones. The tradeoff of all that extra weight is a reduction in noise of about 15 to 20 decibels (dB). But considering jet engines create 75 to 80 dB of noise inside the aircraft cabin, passive models have some serious limitations. That's where active noise-canceling headphones come in.

Hope this Helps you!! Good Luck with your Quiz/Assignment/Test!! Don't forget to mark as Brainliest!! :)

Use the graph to determine the velocity between 6 and 12 seconds.

-2
m/s

What was the velocity over the entire trip?

m/s Also can someone explain how you got the answers?.

Answers

Answer is E I’m pretty sure

Determine the displacement and distance covered by a man if he walks 10 m north, turns east and walks 20m, and then turns left and walks 10 m.

Answers

His displacement is about 44.72 and he covered 40m

Answer : his displacement is 44.72 . Explanation : He displaced around 44.72 and covered 40m

Which of the following is not true about both scientific laws and scientific theories?

Answers

Answer:

In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research

Explanation:

During an experiment, a scientist places a heat lamp above a bowl of water and uses the lamp to heat up the water. How does heat transfer from the lamp to the water?
Conduction
Convection
Radiation
None of the above

sorry i dont know what subject to put

Answers

Answer:

radiation

Explanation:

radiation since its not directly in contact with it, it’s using it’s heat waves to warm it it

If two waves interact in destructive interference, which of the following will be true regarding the new wave formed?

A. The new wave will produce a lower-pitched sound than the two original waves.

B. The new wave will produce a quieter sound than the two original waves.

C. The new wave will produce a higher-pitched sound than the two original waves.

D. The new wave will produce a louder sound than the two original waves.
Help plz

Answers

Answer:

Explanation:

The guy above is correct, it is B :)

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