Answer:
Explanation:
Charges can redistribute themselves to create static electricity in four different ways: friction, conduction, induction, and polarization.
Frictional charging is the process of moving electrons from one chargeless object to another by rubbing the two together. (Example: When two objects rub against each other, some electrons may transfer (hair and balloon)Conduction charging is the direct transmission of electrons from one item to another. (Example: when you massage your feet on the carpet, the charges travel to your hands.)Induction charging: Without physically touching the charged object, electrons can respond to its electric field. Electrons can easily break out from their atoms in some materials, such as metals. When a negatively charged thing is near a metal object, the field repels electrons, causing them to migrate away from it. (Example: The metal object develops a positive charge at its close end and a negative charge at its far end. We refer to this procedure as induction.)Polarisation charging: Electrons only travel within their own atoms when other materials are being charged by polarization. Individual atoms develop charged ends as a result of the electrons' reactions to electric fields, which attract other charged objects. Polarization exists here. Neither polarisation nor induction alters the overall charge of the items since charges don't transfer between them.Calculate: The net force on a rock with a mass of 2.0kg is 19.6N. What is the acceleration of the rock?
Answer:
the acceleration is 9.8
Explanation: F = mA, 19.6 =2A, A = 9.8 m/s^2
If an object is travelling faster than its own sound waves, which of the following is created?
A. wave destruction
B. pressure cooker
C. velocity pulse
D. sonic boom
Help plz
Answer:
D
Explanation:
When an object travels faster than the speed of sound, a sonic boom is created. A ring of pressure waves (probably why wave destruction and pressure cooker are options lol) are created, which is why when you see a jet make a sonic boom there looks like a ring shaped cloud behind it. Hope this helps! For further confirmation/information, just look up sonic boom science (or else you will get sonic boom the video game)
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?
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 ;)
Give three examples of properties of elements
Answer: Atomic number, Atomic Mass, Ionic radius
Explanation:
The three examples of properties of elements are Atomic Number, Melting Point, and Electronegativity are the properties of the element.
Atomic Number: The atomic number of an element is the number of protons found in the nucleus of an atom of that element. Each element has a unique atomic number.
Melting Point: The melting point of an element is the temperature at which it transitions from a solid state to a liquid state. Different elements have different melting points, which can vary widely.
Electronegativity: Electronegativity is a measure of an element's ability to attract electrons toward itself in a chemical bond. It is an important property in determining the nature of chemical bonding and the reactivity of elements. Elements with high electronegativity tend to attract electrons strongly.
Other properties include atomic mass, density, boiling point, reactivity, and many more, which contribute to the diverse behavior and characteristics of elements in the periodic table.
To know more about electronegativity :
https://brainly.com/question/10531792
#SPJ6
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.
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.
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
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
Based on Newton’s 3rd Law of motion, if a baseball player hits a ball with the bat, the action force is the impact of the bat against the ball. Explain where the reaction force can be found.
Can you help me? Thanks! 10+ points!
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)
Give THREE examples of objects that have potential energy
A ball kept on 3rd floor of a building.
A pendulum bob kept at 3m height
A stone thrown vertically upward.
A pressed spring.
A squashed spunge ball.
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!
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
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.
Which of the following statements is true regarding the constructive interference diagram shown below? Select all that apply.
A. The amplitude of the wave is increased.
B. During interference, the wave will produce a louder sound.
C. The amplitude of the wave is decreased.
D. The crests of two waves are overlapping.
E. The troughs of the two waves are overlapping.
There is more than one answer. Help plz
The statement i.e. true with respect to the constructive interference diagram should be that the two waves should be overlapped.
What is the constructive interference?At the time when two waves of the same kind of wavelength should be in phase so they created the new wave along with the amplitude that should be equivalent to the sum of the inidvidual amplitudes so this we called as the constructive interference
As per the given diagram, we can say that the crest for two waves that should be overlapped should be considered.
Learn more about wave here: https://brainly.com/question/22157656
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
Answer:
B
Explanation:
It the same amount of force is being used it will cancel each other out.
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
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
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?.
A campfire could be called.
Answer:
a fire at campsite that provides light and warmth.
Based on Newton’s 3rd Law of motion, if a baseball player hits a ball with the bat, the action force is the impact of the bat against the ball. Explain where the reaction force can be found.
Answer:
the reaction force will be found where the bat hits the ball.
Explanation:
Answer:
reaction force will be found where the bat hits the ball
Explanation:
PLEASE HELP!!
What type of exercise are you completing if you contract your muscles to produce movement?
A. concentric
B. eccentric
C. isometric
D. isotonic
Answer:
A
Explanation:
YAYAYAYAYAYA
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
Answer:
b
Explanation:
CLICK HERE FOR THE WEBSITE:
Read the following information provided from the above link. Answer the following questions.
1. Energy forms are either
gravitational, mechanical, and nuclear.
energy comes in forms that are stored including - chemical,
energy forms are doing work - like electrical, heat, light, motion, and sound.
2. Scientists define energy as
for us
is possible because we have learned how to
and then use it to
3. Energy
along the road and boats through the water. It can bake a cake in the oven, keep ice frozen in the freezer, and
our homes.
4. What are the two basic categories of the seven forms of Energy?
5. Define kinetic energy
6. Define potential energy:
7. Create a T-chart to organize the seven types of energy as potential or kinetic. Give an example of each!
Answer:
for the 1st one its mechanical or nuclear. for the 2nd it is the ability to do work for the 4th one it is Potential energy and Kinetic energy. for the 5th one it is the object has motion or moving. for the 6th question it is when the object is still (not in motion) or is to the opposite of when the object is moving
7 forms of energy ive learned are. medical energy, chemical energy, nuclear energy, heat energy, electrical energy, radiant energy and sound energy.
for the third question the answers are is and even
Explanation:
i just do this in my head and my science notebook, i hope this is wright for you.
also were both in middle school so this might be most of the answers
energy forms are either mechanical or nuclear. nuclear energy comes in forms that ... mechanical ...
tell me if its wrong or anything i just started science or physics like 5-6 months ago
Will give brainlist!! Please help!!
Instructions: Choose three activities in your everyday life that involve electromagnetic energy, and fill in the required information below.
________________________________________
Electromagnetic Energy Example One
Activity:
Type of electromagnetic energy:
Picture:
Description of use:
Electromagnetic Energy Example Two
Activity:
Type of electromagnetic energy:
Picture:
Description of use:
Electromagnetic Energy Example Three
Activity:
Type of electromagnetic energy:
Picture:
Description of use:
Answer:
microwave, visible light, and radio waves.
Explanation:
The gravity of Earth is attracting a person towards the center with 500N of gravitational force. The person is exerting a reactionary force on the Earth with how much force? Explain your thinking behind this.
Answer:
I don't know.
Explanation:
The picture below shows an experiment to find out the highest frequencies which students can hear. When the teacher turns the dial the frequency from the loudspeaker increases. the students put their hands down when they can no longer hear the sound.
Some students put their hands up while others have put their hands down. What conclusion can you draw from this observation?
The teacher suspects that some of the students are not giving honest responses, they are keeping their hands up even when they can no longer hear the sound. How could he check if he is right? *
which is the stronger acid?
A pH 1
B pH 4
C pH 8
D pH 13
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
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
A simple machine increases __________ to more efficiently use force to do work.
Distance / Displacement
Power
Force
Energy
Please explain your answer.
As human activities constantly change the ecosystem, scientists work to find ways to keep ecosystems healthy and intact. In what ways do humans protect and restore the ecosystem? Choose the three that apply.
A.
by providing cultural services
B.
through ecological restoration
C.
by maintaining current conditions
D.
through conservation
E.
by working toward sustainability to maintain diversity
In what ways do humans protect and restore the ecosystem? Choose the three that apply.
B. through ecological restoration
D. through conservation
E. by working toward sustainability to maintain diversity.
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.
Answer:
maybe target, not sure.
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.
Hope this Helps you!! Good Luck with your Quiz/Assignment/Test!! Don't forget to mark as Brainliest!! :)