which statement about pulleys is NOT true?
1. Fixed pulleys change the direction of output force.
2. fixed and movable pulleys can be combined
3. fixed pulleys increase the output force.
4. movable pulleys reduce the input force
- Will give Brainly for CORRECT answer -
Answers
Base on the fact below, it is therefore not true that movable pulleys reduce the input force.
Fixed pulley is positioned in a specific position which cannot be changed through out its application except it is uninstalled and installed in another fixed position. The magnitude of the force applied at one end will be the same at the other side. And it changes the direction of the output force.
Fixed and movable pulleys: One, two or more movable pulleys can be attached to a fixed pulley in order to increase efficiency or to achieve a certain goal.
Movable pulleys are the opposite of fixed pulleys. Movable pulley, as its name implies, can move from one position to another but it does not change the direction of the force applied. The force applied at one side of the pulley multiplies at the other side for the lifting of the load.
Base on the fact above, it is therefore not true that movable pulleys reduce the input force.
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Related Questions
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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How does refraction of light change when it moves from one medium to another?
Answers
Answer:
Depending on the density of the medium it can either be bent more or less
Refraction occurs when light travels from one medium to another which changes the speed at which the light travels. This causes light to bend upon incidence with the interface of a new material.
I'll give the brainliest!
1. Who was the first African-American to compete professionally in bowling? (Female and Male)
2. Who has the most professional wins, no matter the Nationality? (Female and Male)
3. Who has bowled the most perfect games professionally, no matter the Nationality? (Female and Male)
4. Who made the most career earnings professionally, no matter the Nationality? (Female and Male)
5. At what age was the bowler with the most wins, when they started bowling? (Female and Male)
Answers
Answer:
1a.Juanita Blocker-female
2b.George Branham-Male
2a.Sania Mirza-Indian
2b.Rafael Nadal-Spanish
3a.Liz Johnson-American
3b.Glenn Allison-American
4a.Serena Williams-$94,518,971
4b. Novak Djokovic-$156,541,453
5a.Liz Johnson-20
5b.Glenn Allison-28
Explanation:
Electric field lines point from positive charges to negative charges. A. True B. False
Answers
Answer: A
Explanation:
Answer: True
Explanation: I just took the quiz.
Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?
Answers
NEED HELP FAST!
select drop box.
questions and options are in pictures.
Answers
Answer:
First is incrcersing mangnetic field second photosphere
Explanation:
sorry if the first one is wrong
What is the answer to mgh =1/2 mv^2 + 1/5 mv^2 ???
Answers
Answer:
v = sqrt((10/7)gh)
Explanation:
The given equation is:
mgh = (1/2)mv^2 + (1/5)mv^2
To solve for v, we can start by simplifying the right side of the equation:
mgh = (7/10)mv^2
Dividing both sides by (7/10)mv^2, we get:
mgh / (7/10)mv^2 = 1
Multiplying both sides by (10/7)m/gh, we get:
v^2 = (10/7)gh
Taking the square root of both sides, we get:
v = sqrt((10/7)gh)
Therefore, the solution for v in terms of m, g, h is:
v = sqrt((10/7)gh)
PLEASE ANSWER dont answer if you dont know
Think about what forces are involved in the different parts of this investigation. Explain why there is a difference in the amount of Newtons measured when you weighed the objects versus when you pulled the objects across a surface. Your answer should mention how the force=mass*acceleration formula is involved.
Answers
Answer:
leval of friction
Explanation:
A spaceship fires a movement thruster, releasing gases at high pressure.
What are the forces in the force pair for this example?
a) the force the gasses apply to the ship
the force the ship applies to the gasses
b) the force the gasses apply to space
the force the ship applies to the gasses
c) the force the gasses apply to space
the force the ship applies to gasses
d) the force the gasses apply to the ship
the force the ship applies to space
Answers
Answer the 2 following questions dividing them like the below:
answer 1
------------
answer 2
-----------------
QUESTIONS
-----------------
1 . After watching the video of how the Titanic sank, please explain with two to three sentences why the bow (front) of the ship went into the water before the rest of the ship.
2 . The video of the Titanic sinking shows that the ship broke into two parts. Why do you think that this happened? What forces were working on the stern (back) of the ship while it was up in the air? Please answer in two to three complete sentences with good grammar.
Answers
Answer:
1 . After watching the video of how the Titanic sank, please explain with two to three sentences why the bow (front) of the ship went into the water before the rest of the ship.
Explanation:
#1. How does a topographic map help an architect?
A It shows where to build a structure.
B It shows how to build a structure.
C It shows the elevation of a building site.
D It tells the builder how the architect wants the parking lot.
#2. How do plants help in erosion control?
A Plant roots hold the soil in place.
B Plants are pretty and keep the neighborhood from being ugly.
C Plants don't help in erosion control.
D Plants allow the soil to float in the rainwater.
#3. The term deposition is used in paragraph 4. Based on context, this term means ____________.
A laying down of sediments
B erosion control
C silt fences
D landslides
#4. How do satellite views help scientists?
A They give scientists the ability to predict catastrophic events.
B Satellite cameras are not good enough to really be helpful.
C They allow scientists to know where valuable minerals are located.
D They allow scientists to see changes as they happen.
Answers
1. C
2.A
3.A
4.A
Acids have a pH < 6.5, provide two other properties of acids. 100 POINTS!!
Answers
Answer:
They have a sour taste as in the case of citric acid in orange and lemon.
They change the color of litmus paper from blue to pink, methyl orange to red, and make phenolphthalein colorless.
They are corrosive.
They cause burns to the skin.
When forces are pointing in the same direction what operation do we use to get the net force? *
Answers
Answer:
If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.
Explanation:
i hope this helped
Please help: The average depth of water in a place near the coast of th Pacific ocean is 5.om. The largest tidal range in that place is 2.0m. Calculate the maximum depth of water at that place. please do not attempt to steal points... thank you <3!
Answers
Answer:
The maximum depth of the water at the place is 6.0 meters.
Given the tidal range and average depth, it is to be noted that the maximum depth of the water at the place, is 6.0 meters.
How can you calculate Maximum Depth using Average Depth and Tidal Range?The tidal range is the successive difference between tide highs and lows, which is a sinusoidal pattern. On the basis of the above, it is correct to state that the tidal range is twice of the amplitude of the tide level.
That is:
The Amplitude of the tide, A = 2.0/2m = 1m
The maximum depth at the place, therefore, is given as:
D\(_{max}\) = A + D\(_{ave}\)
Hence,
D\(_{max}\) = 1.0 + 5.0 = 6.0
Thus, it is correct to state that the Maximum Depth (D\(_{max}\)) = 6.0 Meters.
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Which type of heat transfer
can occur through empty
space?
A. Convection
B. Conduction
C. Radiation
CONVECTION
CONDUCTION
RADIATION
Answers
Answer:
RadiationExplanation:
Radiation is the transfer of heat energy through space by electromagnetic radiation.
Radiation can occur through empty space
the Conservation of Momentum states that the momentum of the system before the collision the momentum of the system after the collision
Answers
if there is a duck behind two ducks and a duck between two ducks and a duck in front of two ducks how many ducks are there? look carefully.....
Answers
If nothing is faster than light, how did the dark get there first? O.o
Answers
Answer:
Nothing is faster than light. Dark is the absence of light, or indeed anything at all. Darkness came before light, so light had to be created to get there. It's like turning on s flashlight in a dark room: the darkness is already there, and an outside source (you/the flashlight) needs to create light.
Explanation: Nothing is faster than light lighting is very fast.
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Answers
The answer is D. density.
List an example of matter in each of the three states.
Answers
The example of matter in the three states is brick in solid state, water in liquid state and oxygen gas in gaseous state.
1. Solid: A brick is a solid object that maintains a fixed shape and volume.
2. Liquid: A glass of water is a liquid that conforms to the shape of its container but maintains a definite volume.
3. Gas: Oxygen gas in the atmosphere is a gas that does not have a fixed shape or volume, filling the available space.
The three states of matter are solid, liquid, and gas. Solids have a fixed shape and volume, such as an ice cube. Liquids have a definite volume but take the shape of their container, like water. Gases have neither a fixed shape nor volume and fill the entire space available to them, such as the air we breathe.
In summary, the states of matter describe the physical properties of substances based on the arrangement and movement of their particles, with solids having a fixed shape, liquids taking the shape of their container, and gases being free-flowing and filling all available space.
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Solid: An object that keeps a constant shape and volume is a brick.
Thus, Liquid: A glass of water is a liquid that keeps a consistent volume while taking on the shape of its container. Gas: Oxygen gas fills the available space in the atmosphere and does not have a defined shape or volume.
Gas, liquid, and solid matter can exist in any combination. Solids, like an ice cube, have a set shape and volume.
Like water, liquids have a set capacity but adopt the shape of their container. Gases, like the air we breathe, have neither a set shape nor volume and fill all available space.
Thus, Solid: An object that keeps a constant shape and volume is a brick.
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ANSWER QUICKLY PLEASE!
How do the masses of objects affect the gravitational force between them?
Answers
Answer:
the larger the mass, the greater the gravitational pull of an object
Explanation:
hope this helps I think that's what u meant lol
25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1.maximum kinetic energy minimum GPE
2.GPE is equal to kinetic energy
3 this time there will be maximum GPE
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
Which of the following is the term for the heaviness on somethings surface that exerts a force over an area?
A eruption
B sediment
C deposition
D pressure
Answers
Answer:
d. pressure
Explanation:
=force/area
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
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
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?
A. Sound waves can travel great distances.
B. Sound waves from whispering have a higher frequency.
C. Sound waves travel better through solids than gases.
D. Sound waves produce an echo.
Answers
Answer:
C
Explanation:
Because you can feel vibrations through solids but not through gases
Answer:
c
Explanation:
Because you can feel vibrations through solids but not through gases
Did you notice that you could use the magnet to get the paper clip to move without
touching it?How was this similar to the floating plant?A change in motion can only happen when a force is acting on an object.What force was acting on the paper clip?Using the paper clip and the magnet as an example, make a claim how magnets can make an object move without touching the object.
Answers
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object.
What is magnetic force?A magnetic field is described as a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
In this case , the magnetic force arose due to the interaction between the magnetic fields of the magnet and the paper clip.
The magnet has a magnetic field around it, which exerts a force on any nearby magnetic material, such as the paper clip.
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Answer:
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object
Explanation:
What are physical properties?
Answers
Answer:
they are things that can't be turned back the way they were before, like when you mix an egg, you can't get the egg to unmix itself.
Explanation:
List three evidences that show that the Bible is the Word of God.
Answers
Answer:1.God tells us that He is the Author (2 Peter 1:20-21 Open in Logos Bible Software (if available) & 2 Timothy 3:15-17 Open in Logos Bible Software (if available))
1.The Old Testament and New Testament Authors understood they were writing the Word of God. Common Old Testament phrase – “Thus saith the Lord”. The Apostle Peter confirmed the Apostle Paul’s writings as Scripture (2 Peter 3:16)
3.Its Historical Accuracy – as verified by archeology, which has never contradicted the Bible, but only confirms and silences its critics.
Explanation:
Answer:
Many people question who the author of the Bible is and wonder if the Bible is really the Word of God. I want to give you five reasons to affirm that the Bible is God's Word.
The Word of God: Evidence that Scripture is Divine
First, I believe the Bible is the Word of God because of its scientific accuracy. The Truth of the Word of God tells us that God “hangeth the earth upon nothing” (Job 26:7). How did Job know that the earth hung in space before the age of modern astronomy and space travel? The Holy Spirit told him. The scientists of Isaiah’s day didn’t know the topography of the earth, but Isaiah said, “It is [God] that sitteth upon the circle of the earth” (Isaiah 40:22). The word for “circle” here means a globe or sphere. How did Isaiah know that God says upon the circle of the earth? By divine inspiration.
Secondly, the Bible is affirmed through historical accuracy. Do you remember the story about the handwriting on the wall that is found in the fifth chapter of Daniel? Belshazzar hosted a feast with a thousand of his lords and ladies. Suddenly, a gruesome hand appeared out of nowhere and began to write on a wall. The king was disturbed and asked for someone to interpret the writing. Daniel was found and gave the interpretation. After the interpretation, “Then commanded Belshazzar, and they clothed Daniel with scarlet, and put a chain of gold about his neck, and made a proclamation concerning him, that he should be the third ruler in the kingdom.” (Daniel 5:29). Basing their opinion on Babylonian records, the historians claim this never happened. According to the records, the last king of Babylon was not Belshazzar, but a man named Nabonidas. And so, they said, the Bible is in error. There wasn’t a record of a king named Belshazzar. Well, the spades of archeologists continued to do their work. In 1853, an inscription was found on a cornerstone of a temple built by Nabonidas, to the god Ur, which read: “May I, Nabonidas, king of Babylon, not sin against thee. And may reverence for thee dwell in the heart of Belshazzar, my first-born favorite son.” From other inscriptions, it was learned that Belshazzar and Nabonidas were co-regents. Nabonidas traveled while Belshazzar stayed home to run the kingdom. Now that we know that Belshazzar and Nabonidas were co-regents, it makes sense that Belshazzar would say that Daniel would be the third ruler. What a marvelous nugget of truth tucked away in the Word of God!
Explanation: