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.
Answers
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 = \(\frac{1}{2} C_{D}\) × 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] = \(\frac{1}{2} C_{D}\) × ρv²A(c)
And that on the flat sheet with area of contact with the air [say A(f)] can be written as -
F[2] = \(\frac{1}{2} C_{D}\) × 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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Related Questions
Mahiya and Mrinmoy are in a relay around a square field with each side of length 60m. First, Mahiya runs at a speed of 6 ms−1 for 60m to pass a baton to Mrinmoy. Then Mrinmoy runs 120m at 4ms−1 while Mahiya runs through the field to reach the other corner. Then Mrinmoy passes the baton. But Mahiya is now tired since she has been constantly running. So, she only runs at 3ms−1 for the final 60m. What is the average speed of the baton in ms−1?
Answers
The average speed of the baton can be determined by dividing the total distance travelled by the total time taken for that travelling.
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\)
First, we will find the total distance, by adding the distances travelled by both Mahiya and Mrinmoy, while carrying the baton.
\(Total\ Distance = Distance\ Travelled\ by\ Mahiya\ to\ pass\ the\ baton\ to\ Mrinmoy\ +\ Distance\ Travelled\ by\ Mrinmoy\ to\ pass\ the\ baton\ to\ Mahiya\ +\ Final\ Distance\ Travelled\ by\\ Mahiya\)Total Distance = 60 m + 120 m + 60 m = 240 m
Now, we will find the total time taken for this travelling. To find out the total time we will divide each distance travelled by the speed of the traveller during that distance:
\(Total\ Time = \frac{60\ m}{6\ m/s}+\frac{120\ m}{4\ m/s}+\frac{60\ m}{3\ m/s}\\\\Total\ Time = 10\ s\ +\ 30\ s\ +\ 20\ s\)
Total Time = 60 s
Now, we finally find the average speed of the baton by using the formula:
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Time = \frac{240\ m}{60\ s}\)
Average Speed = 4 ms⁻¹
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Please someone help with all of these 3
Answers
Answer: Because they all share the same square root
Explanation:
h = 6.63 × 10−34 J.s = 4.136 × 10-15 eV.s
Answer:
A=12 B=36 C=1 D=36
Explanation:
What is Energy Transformation? (answer ASAP)
Answers
Answer: Energy transformation is the change of energy from one form to another.
Explanation: I explained it in the answer ^^
Energy transformation is the process by which energy is converted from one form to another. This conversion can occur in many different ways, such as through mechanical, thermal, electrical, or chemical processes. Energy transformation is a fundamental principle of the physical world, and it is central to our understanding of how the universe works. Energy cannot be created or destroyed, but it can be transformed from one form to another, and this is what allows us to harness energy for various uses in our daily lives. Examples of energy transformations include the conversion of electrical energy into mechanical energy in an electric motor, or the conversion of chemical energy into heat energy during a combustion reaction. Understanding energy transformations is important in fields such as physics, chemistry, and engineering, as it is essential for the design and optimization of energy systems and technologies.
You are working on your senior year science fair project. Your idea is to develop a demonstration to show evidence of how cellular respiration and photosynthesis depend on each other. Your presentation will show how cellular respiration is the process by which all cells transform food into energy, whereas photosynthesis is the process by which plants obtain food. Your experimental design should show evidence of how cellular respiration and photosynthesis depend on each other.
Answers
By using one animal and one plant or tree in an experiment to show that cellular respiration and photosynthesis depend on each other.
How do cellular respiration and photosynthesis depend on each other?The process of Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the producers whereas oxygen is a by-product that is used in the process of respiration and the extra will diffuse in the atmosphere. In the cellular respiration process, oxygen and glucose are converted into water and carbon dioxide. Water and carbon dioxide are the waste material and ATP is the energy that is used in the process. In the photosynthesis process, carbon dioxide gas combines with water molecules forming glucose and oxygen gas while on the other hand, in the process of respiration, glucose combines with oxygen gas forming carbon dioxide gas, water, and energy in the form of ATP. This ATP is used for performing different activities by the cell.
So we can conclude that using one animal and one plant or tree in an experiment to show that cellular respiration and photosynthesis depend on each other.
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4.16 Lab: Motion and Forces
LOOK AT THE PHOTOS BELOW
Answers
An object's velocity is altered by a net force, and acceleration increases with net force. To accelerate to the same amount as being less massive objects, more massive objects need greater net forces.
What constitutes each of the four categories of forces?Any of the four fundamental forces—gravitational, electromagnetic, strong, & weak—that control how objects or particles interact as well as some particle decay—also known as the fundamental interaction is referred to as a fundamental force in physics. These basic forces serve as the foundation for all known natural forces.
Which are the main categories of force?Both contact forces & act at the a distance forces fall under the category of force. You employ force on a daily basis. Basically, force is push and pull. You exert force on an object when you push or pull it.
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Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
Please select the word from the list that best fits the definition
Gives a pictorial indication of how far and fast an object has moved
a. speed
b. velocity
c. frame of reference
Answers
Answer: the answer is C
Explanation:
hope it helps friend :)
You can use the periodic table to help you understand why some atoms form molecules while others do not. Argon and chlorine are both nonmetals. Argon exists in nature as individual argon atoms. Chlorine exists in nature as two chlorine atoms covalently bonded to each other. Why does this occur? A. Argon is unstable, so it does not share electrons with other atoms like chlorine does. B. Argon cannot form covalent bonds because it already has an even number of valence electrons. C. An argon atom is already stable, but a chlorine atom only becomes stable when it transfers an electron to another chlorine atom. D. An argon atom is already stable with eight valence electrons, but a chlorine atom must share two electrons with another chlorine atom to reach eight valence electrons and become stable.
Answers
Answer:
Argon has a complete ortex shape, while chlorine needs one electron to complete it's ortex shape.
A plane leaves Austin and travels 150 miles to Dallas at 200 miles per hour. It then leaves Dallas and flies 275 miles to Galveston at 210 miles per hour. From Galveston, the plane flies back to Austin – a distance of 185 miles at 200 miles per hour. a. How far is the total trip?
Answers
To find how far the total trip was add the mileage of each part together:
150 miles + 275 miles + 185 miles = 610 miles total.
Answer:
610 miles
Explanation: never gonna give you up, never gonna let you down, never gonna turn around and.. desert you
Lab Report: Reaction Rates and Temperature
In this activity, you will complete a virtual experiment to determine how the temperature of water affects the time it takes for antacid tablets to dissolve.
Pre-lab Questions
1. How does an increase in concentration affect a chemical reaction?
2. When temperature increases, what happens to the molecules in a chemical reaction?
3. How do we measure the average kinetic motion of molecules in a solution?
Hypothesis Before you begin your lab, write a hypothesis that reflects how you think temperature of the water will affect the reaction rates. Record your hypothesis as an “if, then” statement.
Variables
This experiment tests how the temperature of water affects the time it takes for antacid tablets to dissolve.
1. What is the independent variable?
2. What is the dependent variable?
Materials
Note that you may choose to conduct this lab with the materials listed below (follow all lab safety procedures) or by watching the experiment video in the lesson.
• 4 antacid tablets
• 2 clear cups labeled Hot and Cold
• Water
• Timing device
Procedure
• Observe the experiment in the virtual lab window. (Or, if you choose to perform this experiment yourself, follow the same procedures shown in the video.)
• Record the time for each trial of the experiment.
Data
Data table: Record the length of time for each trial.
Trial
Time for tablet to dissolve in hot water
Time for tablet to dissolve in cold water
1
2
Graph
Create and include a graph to show the results from the trials. You may use the Create A Graph tool located in the course toolkit for help creating a graph.
Post-Lab Questions
1. Review your data. Did your experiment support your hypothesis? Support your answer with data from your experiment.
2. How did the temperature affect the time it took for the antacid tablet to dissolve?
3. What evidence indicates that a chemical reaction took place?
4. Predict what would happen if the same experiment was conducted with different amounts of water.
Answers
Answer:
3. How do we measure the average kinetic motion of molecules in a solution?Hypothesis Before you begin your lab, write a hypothesis that reflects how you think temperature of the water will affect the reaction rates. Record your hypothesis as an “if, then” statement.VariablesThis experiment tests how the tempe
Explanation:
Answer: Look at the PDF I attached. Hope this helps!
For the effective radiation of heat from an electric heater. Why should we polish it to shine but not keep it clean or paint it green or black?
Answers
Answer:
Polish it to shine
Explanation:
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
What would happen to the digestion process if enzymes were not present
Answers
Answer: It would take 2.3 billion years for the biological reaction without the presence of enzymes. It’s because, without them, your body can’t break down foods so that nutrients can be fully absorbed. Every organ, every tissue, and every 100 trillion cells in our body rely upon the reaction of metabolic enzymes and their energy component.
Explanation:
I hope this helps
Without enzymes, the body would not be able to break down complex carbohydrates, proteins, and fats into their component molecules. This means that these nutrients would not be absorbed by the body and would be excreted as waste.
Additionally, the lack of enzymes would make it difficult for the body to digest and absorb vitamins and minerals. This could lead to malnutrition and other health problems over time.
Overall, the absence of enzymes from the digestive process would severely impair the body's ability to extract nutrients from food and could have negative consequences for overall health and well-being.
brick has a mass of 100 G and a volume of 25 cm squared, if you chop the brick in half what is the density of one half of the brick?
Answers
Answer: Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
Explanation:
Answer:
Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
I WILL GIVE BRAINLYEST AND LOTS OF POINTS
Answers
Hope this helped!
Answer:
Not alot of points bitc-
Explanation:
Someone places a spoon in hot water. The spoon remains in the water till the water becomes room temperature, what temperature is the spoon handle?
Answers
Answer: Room temperature
Explanation: it makes sense (sorry if its wrong)
If you were designing a security system that uses light to detect an intruder, why would it be important to know about the different media and materials that would be parts of the system?
Answers
you need to know about it so you can better design the security system
what is the answer i need answers now
Answers
Answer:
listening ,communication ,resolution
Explanation:
Must contain at least 2 to 1 sentence in each answer for the question.
1. What kind of mixture is a solution? A suspension? A colloid? Explain.
2. Fish give off the compound ammonia, which has a pH above 7. To which class of compounds does ammonia belong? Explain using 1 short sentence.
Answers
Answer:
1: A solution is a homogenous mixture of two or more substances where one substance has dissolved the other.
2: Ammonia is formed from the metabolism of protein and is the major waste product of fish.
Explanation:
Mark Brainliest
Which has a higher density? Helium or air?
Answers
Air
Explanation:In the case of your helium balloon, it most likely floated away before you could catch it because helium is much lighter (or less dense) than the air in our environment.
hope this helps! :)
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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whats can shot up faster a small or a big parachute????
Answers
What is the function of a power source in a circuit?
ill give brainliest btw
Answers
Iron(III)oxide reacts with carbon monoxide to produce iron and carbon dioxide
- How many moles of iron (Fe) are produced from 1.8 moles of iron(III)oxide (Fe2O3)?
- Using your answer from the question above, how many molecules of iron is present in
that number of moles ?
Answers
Answer:
- 3.6 moles Fe
- 2.2 x 10²⁴ molecules Fe
Explanation:
First, you need to create the balanced chemical equation.
The unbalanced equation:
Fe₂O₃ + CO -----> Fe + CO₂
Reactants: 2 iron, 4 oxygen, 1 carbon
Products: 1 iron, 2 oxygen, 1 carbon
The balanced equation:
Fe₂O₃ + 3 CO -----> 2 Fe + 3 CO₂
Reactants: 2 iron, 6 oxygen, 3 carbon
Products: 2 iron, 6 oxygen, 3 carbon
Now that we have the balanced equation, we can use the mole-to-mole ratio (from the equation coefficients) to convert from moles Fe₂O₃ to moles Fe.
1.8 moles Fe₂O₃ 2 moles Fe
-------------------------- x ---------------------- = 3.6 moles Fe
1 mole Fe₂O₃
We can convert between moles and molecules using Avogadro's Number.
Avogadro's Number:
6.022 x 10²³ molecules = 1 mole
3.6 moles Fe 6.022 x 10²³ molecules
--------------------- x ------------------------------------- = 2.2 x 10²⁴ molecules Fe
1 mole
Sam has 3/4 of a can of the hot chocolate mix for drinks to keep everyone
warm. To make a cup of hot chocolate, Sam adds hot water to one
scoop of hot chocolate mix. The scoop holds 1/24 of a can. How many cups of hot chocolate can Sam make?
Speak fast
Answers
If you look this question up on Brainly you’d find your answer. Hope this helps. :)
PLEASE HELP 50 pts + brainliest. 3. A laser light travels from air (n=1) through water (n=1.33), and then a piece of glass (n=1.55). The light first enters the water at an angle of 25.0 degrees (from air to water). Draw a diagram. Use Snell’s Law to find the angle of refraction in the water and then in the glass. I don't know how to do this.
Answers
Answer: the angle of refraction in the water is 34.2 degrees and then in the glass is 41 degrees approximately
Explanation:
A laser light travels from air (n=1) through water (n=1.33), and then a piece of glass (n=1.55).
If the light first enters the water at an angle of 25.0 degrees (from air to water). That means
The incident angle = 25 degrees
Using Snell' law
n(air)/n(water) = sin 25/sin R
Where R is the angle of refraction
1/1.33 = sin 25/sin R
Make sin R the subject of formula
Sin R = sin 25 / 0.7518
Sin R = 0.5620
R = sin^-1(0.5620)
R = 34.2 degrees
This angle will be an incident angle when the light is travelling from the water to glass. Using Snell law agains,
1.33/1.55 = sin 34.2/sin R
Cross multiply
1.33 sin R = 0.87122
Make R the subject of formula
Sin R = 0.87122/1.33
Sin R = 0.6550
R = sin^-1(0.6550)
R = 40.9 degrees
Therefore, the angle of refraction in the water is 34.2 degrees and then in the glass is 41 degrees approximately.
Find the attached file for the figure
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
What type of air mass is being depicted (shown) in the image below at point point B?
continental polar
continental tropical
maritime polar
maritime tropical
Answers
Answer:
21
Explanation:
9/10/21
How will the total energy change as the car moves from point A to B to C? Assume that none of the energy is lost as friction or heat energy.
A The total energy will increase as the kinetic changes to potential and back again.
B Kinetic energy will change into potential energy and back again, but the total energy will stay the same.
C The total energy will decrease because the potential energy will change into kinetic energy.
D The total energy will decrease since it is losing potential energy at point E.
Answers
Answer:c
Explanation: i am on study island and had that
What does the small number 2 show in this chemical formula H2O ?
Answers
Answer: two atoms of hydrogen in a molecule of water.
Explanation: