what is the formula for kinetic friction?
Answers
Answer:
kinetic friction is expressed as
Fk≈ μkFn
Where
the coefficient of kinetic friction is μk
the normal force is Fn
Explanation:
Related Questions
Why is it important for a peer to review your writing, in addition to reviewing it yourself?You still have the ideas in your head, so you may not notice when they did not make it onto the page.
You will ignore all of the problems in your report because you won’t want to fix the problems.
All of the above
A peer has a better understanding of your topic than you do and can find mistakes.
Answers
Answer:All of the above
Explanation:
Energy that comes from the sun—solar energy—is clean. It does not cause pollution the way energy from fossil fuels (like gas and oil) does. However, solar energy must be collected before it can be used. The instruments used to collect solar energy are quite costly.
This paragraph states that solar energy ________.
A) causes a lot of pollution
B) is expensive to collect
C) is one kind of fossil fuel
D) is a cheap way to get energy
Answers
Is expensive to collect
Stratus clouds, like the ones shown in the picture, look like large gray blankets hanging low across the sky. When these are present, it will usually ____ if it is warm, and ____ if it is cold.
1. rain, snow
2. snow, drizzle
3. drizzle, be windy
4. be windy, be sunny
Answers
Does anyone have any questions for force and motion? I need questions for speed, velocity, acceleration, distance/time graphs, speed/time graphs, newtons laws, and balanced/unbalanced forces.
Answers
Answer: I dont have a question but you have a fo.rt.ni.te pfp and Im guessing you play fort so add me my epic is qt-orange im NA_EAST
Explanation:
How is energy from stars transferred to Earth?
State your answer as a claim. Support your claim with evidence from the article. Think about light waves, then explain why the evidence from the text supports your claim.
Answers
Answer:
Explanation:
There are basically three ways by which energy flows outward through a star. They are conduction, convection, and radiation. Stars generate energy through nuclear fusion.
Claim: Energy from stars is transferred to Earth through radiation, particularly in the form of visible light.
Evidence from the article: "The sun is a star, and it is the primary source of energy for Earth's climate system. Energy from the sun is transferred to Earth through radiation."
The article explains that the sun is the primary source of energy for Earth's climate system and that this energy is transferred to Earth through radiation. Specifically, the sun emits energy in the form of electromagnetic radiation, which includes visible light. This radiation travels through space and reaches Earth, where it is absorbed by the atmosphere, land, and oceans, and then converted into heat. Therefore, the evidence from the text supports the claim that energy from stars is transferred to Earth through radiation, particularly in the form of visible light.
Nighttime is the result of
A. Earth's tilt
B. Earth's gravity
C. Earth's surface temperature
D. Earth's spin
Answers
Explanation:
Answer- D(Earth's spin)
Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:
Answers
Answer's C
Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis
The work input = _____.
F i ÷ d i
F o ÷ d o
F o × d o
F i × d i
Answers
The work input = Fi × di
How to solve for work input?To solve for work input, you need to know the force acting on an object and the distance it moves in the direction of the force. Work input is defined as the product of force and distance, given by the formula:
Work Input = Force × Distance × cosθ
Where θ is the angle between the force vector and the direction of motion. If the force is applied in the direction of motion, then θ = 0 and cosθ = 1, so the formula simplifies to:
Work Input = Force × Distance
For example, if you are pushing a box with a force of 50 newtons over a distance of 10 meters, the work input would be:
Work Input = 50 N × 10 m × cos(0°) = 500 Joules
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Answer: F i × d i
Explanation:
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
Let's see about this one.
Answers
Answer: The answer would be A, D and possible E..
Explanation:
The person will continue breathing of course but, shallow breaths so its not c.
and more waste will travel around the cell because oxygen is use in the cell and the cell distributes waste.. Without air, the cells die and yeahh.. im not very good at explaining sorry^^ but its not b either.
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When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
Use the data in the table to explain how you could determine the volume of the block.
Answers
To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
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•Then I should :calculate the time of the block to fall
A car travels for 8 hours at a speed of 62 miles per hour. How far did the car travel?
Answers
Answer:
The car traveled 496 miles
62x8=496
Hope this helped!
PLZ HELP 16 POINTS
Which of the following statements best describes the role of glucose during photosynthesis? (5 points)
It reacts with water.
It is a product formed.
It reacts with carbon dioxide.
It is converted into light energy.
Answers
Answer:
It is a product formed.
Explanation:
when carbon di oxide and water react with help of sun light glucose and O2 becomes product.
Answer:
it is converted with light energy.
Explanation:
i got a 100 on my test
Explain what happens as the heart grows bigger.
Answers
Initially, the heart may grow bigger as a compensatory mechanism to try to keep up with increased demands for blood and oxygen. For example, if a person engages in regular exercise, their heart may enlarge to accommodate the increased demand for blood and oxygen to the muscles.
However, if the heart continues to grow over time, it can become less efficient at pumping blood and may develop structural abnormalities that increase the risk of heart failure, arrhythmias, and other complications.
In some cases, cardiac hypertrophy may be reversible if the underlying cause is treated, such as by managing high blood pressure or heart disease. However, if left untreated, hypertrophy can lead to irreversible damage to the heart muscle and may require more aggressive interventions, such as medication, surgery, or other medical procedures to manage the condition.
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
What is the formula to calculate the GPE of an object?
Answers
Answer:
mass x gravity x height
Explanation:
Gravitational potential energy is measured in jules
Does anyone know how to do this question???
Force = 7kN
Pressure = 1mPa
Area = ?
Answers
Answer:
7000 m^2
Explanation:
Pressure=Force/Area
1=7000/Area
1(Area)=7000
Area=7000 m^2
A car travels 200km. The trip takes 4 hours. The highest speed the car travels at is 100Km/h and lowest speed is 45km/h. Calculate the average speed of the trip?
Answers
Answer:
50km/h
Explanation
200km/h /4hour
it is 50km/h
Match the parts of an atom to the colors in this picture:
Protons
Electrons
Neutrons
Answers
Red - Protons
Green - Neutrons
Answer:
The yellow circles are electrons.
The green circles neutrons
The red circles are protons.
How can removing thermal energy afect the state of matter? (Check all that apply)
a). When thermal energy is removed from water vapor the temperature decreases and condensation can occur.
b).When thermal energy is removed from a liquid the particles slow down and a water vapor is formed.
c). When thermal energy is removed from a liquid the temperature decreases, the particles slow down, and freezing occurs forming a solid.
d). When thermal energy is removed from water vapor the particles slow down and evaporation occurs.
Answers
Thermal energy is the average kinetic energy of particles of matter, whereas temperature is the total kinetic energy of particles of matter. True or false?
Answers
That's false..
It's actually the other way around.
HELP WITH THIS Q PLEASE?
Answers
Answer:
specific heat capacity = heat transferred /change in temperature
=2.11 •10^4/6.8-98
=0.02 • 10^4
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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Sound travels fastest through
Answers
Answer: sound travels fastest only through solids.
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.
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
Apparent brightness depends on which two properties?
A. Distance and temperature
B. Luminosity and distance
C. Luminosity and temperature
D. Luminosity and size
Answers
Answer:
I believe it is luminosity and distance
Explanation:
So B
At a particular Luminosity, the more distant an object is, the fainter its apparent brightness becomes as the square of the distance
So the correct ans is B
Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 grams. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time?
Answers
Answer:
100
Explanation:
The reciprocal of 6 4/5 is _____.
Please help :(
34/5
29/5
5/34
15/5
Answers
Answer:
5/34
Explanation:
you have to multiply 6 and 5 then add 4 and that’s your numerator and 5 is you denominator