Answer:
Wavelength is one way of measuring the size of waves. ... The wavelength of a transverse wave can be measured as the distance between two adjacent crests. The wavelength of a longitudinal wave can be measured as the distance between two adjacent compressions.
Explanation:
Although two identical objects may have the same mass and the same weight (meaning that the force of gravity is the same for both), they may not fall to Earth at the same rate. This is because of air resistance. Any object that is falling has friction, or resistance, from the air. The larger the object, the more resistance it has as it falls.
Get two identical pieces of paper. Crumple one up into a ball, but leave the other one a flat sheet. Drop both pieces of paper off a high place at the same time. What happens? Which falls faster? Record your observations and make a conclusion, using the terms “mass,” “weight,” “force,” “resistance,” and “gravity.”
MUST BE AT LEAST 4 sentences and include the terms weight, force, resistance, and gravity.
Answer:
the paper ball falls faster and the unfolded paper falls at a slower rate
Explanation:
this is because gravity is pulling both objects down to the ground and hence they are falling. Both objects have the same mass and weight but the resultant force of the paper ball is smaller than that of the unfolded paper. The unfolded paper has a larger surface area and so a larger force is acted upon it, meaning there is more air resistance. This shows that the paper ball falls faster than the unfolded paper.
The air resistance acting on the crumpled ball will be less and hence it will fall faster.
What is Air resistance?
Air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. The larger the object, the more resistance it has as it falls.
Mathematically, we can write it as -
F = [tex]\frac{1}{2} C_{D}[/tex] × ρv²A
Given are two identical pieces of paper such that one is crumpled up into a ball and the other one is left as flat sheet.
Now, as you throw both, the crumpled up ball and the flat sheet, the crumpled up ball will fall faster. The main reason behind this is that the total surface area of the crumpled ball in contact with the air is less than compared to that of the flat sheet. Air resistance on the crumpled ball with surface are in contact [say A(c)] can be written as -
F[1] = [tex]\frac{1}{2} C_{D}[/tex] × ρv²A(c)
And that on the flat sheet with area of contact with the air [say A(f)] can be written as -
F[2] = [tex]\frac{1}{2} C_{D}[/tex] × ρv²A(f)
Now as A(f) > A(c), therefore F[2] > F[1]
Therefore, the air resistance acting on the crumpled ball will be less and hence it will fall faster.
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Calculate the speed of the object from 5 seconds to 10 seconds. Show your work and don't forget to include the units. (HINT for distance, make sure you are telling me the total distance traveled from 5 seconds to 10 seconds... no it is not 5 meters)
Answer:
Given
mᴀ = mʙ = mᴄ = 62 kg
Fᴀ = 480N
Fʙ = 240 N
Fᴄ = 600 N
Asked
aᴀ, aʙ, aᴄ = ?
Solution
Based on the question, we know that the mass of road A, road B and road C are same. And, the formula of acceleration is
so, we can calculate the acceleration of road A, road B and road C.
• for road A
aᴀ = 7,7419 m/s²
aᴀ = 7,75 m/s²
• for road B
aʙ = 3,8709 m/s²
aʙ = 3,87 m/s²
• for road C
aᴄ = 9,6774 m/s²
aᴄ = 9,68 m/s²
Explanation:
Please help urgent!!! 20 points and if you answer both i will give brainliest
9. Waves with the shortest wavelengths have the highest
______________________.
10. The higher the frequency of a wave, the higher the
________________________.
Answer: 9.Gamma rays 10. Hertz
Explanation:
The blue mass in the image is 10kg.
The red mass in the image is 10kg.
The blue mass is currently 4 meters away from the red mass.
If we change the distance to 6 meters apart, what will happen to the gravitational force each mass puts on the other ?? You have to choose a answer through A,B,C !
Answer A The force of gravity will not change as the masses move away from each other.
Answer B The force of gravity will increase as the masses move away from each other
Answer C The force of gravity will decrease as the masses move away from each other
Answer: C
Explanation:
I guessed lol . Am i right .
Debby and Ben took different routes to travel from Point A to Point E. Debby took the route along A, B, C, D, and E. Ben took the route along A, G, F, and E. Debby and Ben both took 4 hours to complete their walk. Their routes are shown. (3 points)
Which statement is true about Debby and Ben's average speed?
Ben and Debby's average speed was the same.
Debby's average speed was twice Ben's average speed.
Ben's average speed was twice Debby's average speed.
Debby's average speed was three times Ben's average speed.
Answer:
Ben's average speed was twice Debby's average speed.
Explanation:
Ben covered a total distance of 16 miles (10+4+2) and Debby covered 8 miles (3+2+2+1) which is half of what Ben covered. As they both reached the place in the same amount of time it tells us Ben was faster.
The mass of the man is 86 kg. What is the force of friction that slowed him down? Use the equation for Newton’s second law, F = ma.
Answer:
Mass = 86 kg acceleration due to gravity = 10m/sExplanation:
So force =m*a
Mass = 86 kg acceleration due to gravity = 10m/s
What do we call the region surrounding a large body of mass in which a gravitational force is experienced?
Question 2 options:
Answer A Magnetic field.
Answer B Gravitational field.
Answer C Field strength.
Answer D Electric field.
What do we call the region surrounding a large body of mass in which a gravitational force is experienced?
Question 2 options:
Answer A Magnetic field
Answer B Gravitational field
Answer C Field strength
Answer D Electric field.
Answer:
think it B Gravitational Field
Explanation:
Hope that worked!!!
HELP ME
which examines some industrial applications of magnets and electromagnets, list two examples of objects that you use every day that rely on magnets or electromagnets.
Answer:
Headphones use electromagnets, and Audio Speakers use very large magnets inside of them
Explanation:
This answer doesn't really need an explanation but you can just research why they use those kind of magnets in those objects if you want.
Which of the following is an example of an unbalanced force?
(A) A ball on the grass
(B) A book sitting on a table
(C) A chair leaning on the wall
(D) A stroller being pushed
Answer:
d
Explanation:
because the motion is changing as it slows down mark brainliest to help me out :)
The example of an unbalanced force is a stroller being pushed. The correct option is D.
What is unbalanced force?An object is said to be acted upon by an unbalanced force only when an individual force is not balanced by a force of equal magnitude and direction.
Unbalanced forces are caused by a forward force or thrust and a frictional force opposing each other.
Friction is an opposing force to motion. It occurs whenever two surfaces rub against each other, such as when you rub your hands together or apply the brakes on a bike or car.
Forces that are balanced are those that are opposite in direction and equal in size.
Equilibrium is defined as the presence of balanced forces. There is no change in direction when forces are balanced.
As here pushing a stroller is not balancing the force as the force applied is more than the opposing one.
Thus, the correct option is D.
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Describe how the size of the starting force affects the distance moved by the car.
Answer:
There are two forces acting in opposition to the driving force, so the friction and the road and the air resistance. The air resistance is much greater than the friction with the road when a vehicle is in motion. When a vehicle is at rest, all of the forces acting on it are balanced.
You sit with friends around a campfire, roasting marshmallows. Which
transfer of thermal energy involved in this system is an example of
conduction?
O A. Thermal energy moves through the air from the flames to the
marshmallow.
B. Thermal energy moves within the air above the flames as warmer
air rises.
C. Thermal energy moves from the marshmallow to your fingers as
you touch the marshmallow.
D. Thermal energy moves through the air and warms your hands and
face.
The transfer of thermal energy involved in this system which is an example of conduction is "thermal energy moves from the marshmallow to your fingers as you touch the marshmallow."
Conduction is the movement of thermal energy without the actual movement of the particles of a body. They particles only collide with each other and transfer energy in the process while maintaining their mean positions.
When you touch the marshmallow, you feel the heat by conduction. Hence, the transfer of thermal energy involved in this system which is an example of conduction is "thermal energy moves from the marshmallow to your fingers as you touch the marshmallow."
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Answer: the answer is B
Explanation: answer is : Thermal energy moves within the air above the flames as warmer air rises
h e l p m e p l e a s e
Answer:
I cant read anything post a better pic broo
A pot of water is heated on an electric stove top and begins to boil. Which
TWO transfers of thermal energy involved in this system are examples of
convection?
O A. From the pot to the water
O B. From the rising warmed water to cooler water at the top
O C. From the burner to the bottom of the pot
O D. In the surrounding air as air currents develop
Answer:
B. From the rising warmed water to cooler water at the top
A pot of water is heated on an electric stove top and begins to boil and then Convection currents are set up in the boiling water and in the surrounding air.
What is Convection?Convection is the transfer of thermal energy by the actual movement of the molecules of a substance. A convection current is set up when the molecules of a fluid is heated, rises and is replaced by cooler molecules from below.
The characteristics of convection,
Convection occurs in liquids and gases.
Convection transfers thermal energy.
Convection occurs until all of the fluid is at the same temperature.
The two transfers of energy in this system are;
From the rising warmed water to cooler water at the top.In the surrounding air as currents develop.Hence, Option D is the correct answer.
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If a steel nail is wrapped 8 times with an insulated copper wire and each end of is attached to a 1.5 V battery, we find that it will lift the weight of 2 large paper clips. We hypothesized that for each 8 coils, you will be able to pick up one additional paper clip. When we ran the experiment, we observed and recorded that when we added 8 more wraps around the nail (16 coils) we could lift 4 paper clips and when we added 8 more wraps (24 coils) we could lift 6 paper clips. Choose the correct conclusion to the experiment.
1. We redesign the test and hope for better results.
2. We concluded that every time we add 8 wraps to the nail the total number of paper clips lifted doubled.
3. We concluded that our original test flawed. Because of the results, 8 coils should be able to pick up 2 paper clips. We will check our original test with a fresh battery.
4. We concluded that something went wrong with the experiment since it didn't give us the results we expected.
Answer:
2
Explanation:
i think that it would be 2 because it makes the most sense
How does the temperature of water change when it is placed in a freezer and
then begins to freeze?
O A. It decreases first and then remains constant.
B. It decreases first and then increases.
O C. It increases first and then remains constant.
D. It increases first and then decreases.
The temperature of water changes as It decreases first and then remains constant . when it is placed in a freezer and then begins to freeze, therefore the correct answer is option A .
What is thermal energy ?It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy .
When water changes to ice, firstly the temperature of the water decreases due to the specific heat, and during the phase change process, the temperature of the water remains constant .
Water temperature fluctuates when it initially drops and then stays the same . The right response consequently options A when something is placed in a freezer and starts to freeze .
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help with a length problem
Answer:
B. Millimeters
Explanation:
Milliliters is a unit for volume
Millimeters are length, so its suitable for this.
Kilometers is also a unit used for length but its too big for a shoe measurement.
Kilograms is a unit for weight.
Cumulonimbus clouds are associated with what type of weather?
1.Stormy
2. Fair
3. Windy
Cumulonimbus clouds are associated with stormy weather.
All the organelles in a cell work together to help the cell and the whole organism function. Some diseases are caused by the failure of one type of organelle. Read the description below of an example of this type of disease.
Lauren has cystic fibrosis. Her body is unable to control the flow of salt into and out of her cells. Lauren’s symptoms include coughing and wheezing when she tries to exercise. She receives breathing treatments that let her swim, dance, and sing. Which organelle is affected by Lauren's disease?
A. endoplasmic reticulum
B. cell membrane
C. cytoplasm
D. cell wall
Please answer ASAP!!!
Write a paragraph of five sentences or more explaining how the radio uses the behavior and characteristics of the radio wave to function.
Answer:
Radio waves have the longest wavelengths in the electromagnetic spectrum.You can tune a radio to a specific wavelength—or frequency—and listen to your favorite music. The radio "receives" these electromagnetic radio waves and converts them to mechanical vibrations in the speaker to create the sound waves you can hear.
Explanation:
Which property is useful for describing a substance might depend on the state of matter the substance is in?
how is claming territory in space dangerous
Answer:
Moon mining and outer-space colonies remain a pie-in-the-sky dream for now. But a new paper argues that the settlement of other worlds
Explanation:
Someone help
Its a Friday night and i have no idea what this answer for my hmw is
Average speed is described as _____.
A) speed that does not change
B) speed that does not always move at the same rate
C) speed that decreases
D) none of these
If an astronaut is 66 kg, what is their weight in N on the moon?
The mass of the person would be 66 kg on both Earth and the Moon.
The blue mass is currently 4 meters away from the red mass.
If we change each mass to 20kg, what will happen to the gravitational force each mass puts on the other?? YOU HAVE TO CHOOSE A ANSWER THROUGH A B C!
The force of gravity will increase as the masses increase.
The force of gravity will not change as the masses increase.
The force of gravity will decrease as the masses increase.
Answer:
its a!
Explanation:
•✧•
Explain what wave frequency is...
Explanation:
Wave frequency is the number of waves that pass a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
Wave frequency is the number of waves that pass a fixed point in a given amount of time.
Help me please! i seriously dont understand this unit
Answer:
The answer to your question is c 11 because the number of neutrons plus protons equals the atomic mass.
Explanation:
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.
Supposed to be in biology.
3. What are the basic needs of living things?
4. What happens if a new organism is added to an ecosystem or if the temperature was to change
suddenly?
5. True or False. Ecosystems are always very large and cover a large amount of land.
6. Wha i ecoone
7. A ecosystem that exists on land (outside bodies of water) are called __________________________ and
ecosystems that exist within a body of water are called __________________________
Answer: Is Below :).
Explanation:
1. What are the basic needs of life?
Food, Sleep, Shelter, Oxygen, Water.
2. What happens if a new organism is added to an ecosystem or if the temperature was to change suddenly?
A. First of all, we would have to know if the new animal is king of the wild or a victim for the king. If its king, we would start to see the population decrease of certain animals and increase of that specie. If its not king we would see an increase in the population of the kings of the wild and decrease in the new specie.
B. If the temperature changed all of a sudden we would see many species die out due to them not being able to adapt to that certain atmosphere.
3. True or False. Ecosystems are always very large and cover a large amount of land.
False, and ecosystem can be large like a jungle but, it can also be small as just a tree in that jungle.
4. What is an ecosystem?
A biological community of interacting organisms and their physical environment.
5. A ecosystem that exists on land (outside bodies of water) are called Terrestrial ecosystem and ecosystems that exist within a body of water are called aquatic ecosystem.
Hope you got the answers to your problems! Have a great day!
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Based on the Law of Conservation of Matter, what number should be placed in the box to balance the chemical equation below?
Group of answer choices
No coefficient is needed.
2
4
3
Answer:
2
Explanation:
Step 1: RxN
4Al + 3O₂ → Al₂O₃
Step 2: Balance RxN
We have 4 Al's and 6 O₂'s on the reactant side.
We need the same number of Al's and O₂'s on the product side.
4Al + 3O₂ → 2Al₂O₃
A fly takes 0.04 s to flap its wing once; find its frequency.
Which two factors affect the amount of thermal energy an object has?
O A. The amount of space between the particles of the object
B. The average kinetic energy of the particles of the object
O C. The mass of the object
O D. The directions in which the particles of the object are moving
Answer:
B and C
Explanation:
just did the quiz
The factors that influence amount of thermal energy that is found in an object are:
B: The average kinetic energy of the particles of the object
C:The mass of the object
Thermal energy can be regarded as the kinetic energy which is energy that is involved in the random motions of the molecules of object.It can be referred to as heat energy and it's been measured in joules or calories,One of the factors that affect the amount of this energy in an object is average kinetic energy of the particles that are present in that object, if the amount of the kinetic energy is high, then the object will have high thermal energy This is because the particle are in motion and not fixed.
Therefore option B, C are right.
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