Caleb is investigating the effect of friction on the motion of an object. He uses the following supplies for the investigation:
a wooden block
three ramps, each ramp is the same height and length but has a different surface (smooth wood, carpet, rough sandpaper)
a stopwatch
Caleb tests his hypothesis that the smooth wood ramp surface causes less friction than the carpet and that the carpet causes less friction than the rough sandpaper.
(THERE IS A PART "A,B,C")
Answers
Place the ramps on the floor and time each ramp for time it takes for wooden block too reach thee floor. The times will be different and thus you can conclude that friction will increase the time
Part b
Caleb uses the same block as this is his control variable that he wants to keep same so that the results are correct and accurate
Part c
The independent variable is the thing you change before you test so it will be the surface on which the wooden block is sliding
The dependent variable is the variable you measure so that will be the time it takes for the block to slide to the bottom.
Related Questions
an airplane of mass 50 tonnes is flying at a speed of 5 km\s at a height of 50 km above the ground. what is the total energy it has on reaching the ground
Answers
Answer:
sorry, but the Question at hand is to hard for my delicate mind
Explanation:
In which layer of the atmosphere is the ozone layer located?
Answers
Answer: im pretty sure its the stratosphere.
Explanation:
Please help
Select the correct text in the passage.
Identify the verb phrase in the paragraph.
Space travel has always been a fascinating subject. For centuries, humans have dreamed of sending missions into space to discover the dark corners of the universe. Now, technology can finally help us fulfill this dream.
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Answer: The verb phrase can be found in the last sentence(?
HELP!!! GIVING BRAINLIEST AND MANY POINTS!!!
Answers
Answer:
first and second photo
speed = distance/time
s = d/t
Segment:
A — 90/30 = 3 m/s
B — 120/60 = 2 m/s
C — 250/50 = 5 m/s
D — 120/40 = 3 m/s
E — 60/20 = 3 m/s
total distance = 90+120+250+120+60 = 640m (meters)
total time = 30+50+60+40+20 = 200 (seconds)
average speed = 640/200 = 3.2 m/s
Third photo:
route
A: travelled east 90 meters
B: travelled north 120 meters
C: travelled east 250 meters
D: travelled north 120 meters
E: travelled west 60 meters
speed for each segment was done in pictures 1 and 2
average speed for whole trip was done in pictures 1 and 2
velocities For route: (im Not completely sure)
A: 3m/s
B: 2m/s
C: 5m/s
D: 3m/s
E: -3m/s
Answer:
first and second photo
speed = distance/time
s = d/t
Segment:
A — 90/30 = 3 m/s
B — 120/60 = 2 m/s
C — 250/50 = 5 m/s
D — 120/40 = 3 m/s
E — 60/20 = 3 m/s
total distance = 90+120+250+120+60 = 640m (meters)
total time = 30+50+60+40+20 = 200 (seconds)
average speed = 640/200 = 3.2 m/s
Third photo:
route
A: travelled east 90 meters
B: travelled north 120 meters
C: travelled east 250 meters
D: travelled north 120 meters
E: travelled west 60 meters
speed for each segment was done in pictures 1 and 2
average speed for whole trip was done in pictures 1 and 2
velocities For route: (im Not completely sure)
A: 3m/s
B: 2m/s
C: 5m/s
D: 3m/s
E: -3m/s
Explanation:
I know how the voltage increasing/not enough/stays the same and how long the battery lasts with series and parallel connections. But can someone explain the path electrons goes when you serie/parallel connect the batteries. I understand it with lamps but not batteries. Try to explain it as simple as possible because I'm a bit too young for this but I'm curious
Answers
Answer:
It comes out the positive side of the battery and goes in to the negative side of the battery
Explanation:
There are already electrons in wires in a circuit before you add the battery. By adding the battery, you're giving the electrons the energy it needs to move along the circuit.
In a series circuit, the circuit is one continuous loop so there is only one path for the electrons to go - out of the positive side of the battery and around the circuit then goes back into the negative side of the battery.
However, with a parallel circuit, there are two or more ways the electrons can go so they take the path of least resistance. The electrons still go out the positive side of a battery but along the circuit, the electrons will go through the path of least resistance ( I tend to think of it like a net with holes in it - the lower the resistance the bigger the holes for the electrons to go through so more can fit in a set amount of time ) but the electrons still go out of the positive side and in through the negative
Please help fast if you can!!! Thanks (25 points)
Derrick created a table of his observations from one trial of an investigation into whether a charged object will attract or repel an uncharged object.
Which statement best explains an incorrect conclusion you might believe without repeated trials?
Object Trial 1
negatively charged attract
positively charged nothing
A) Negatively charged objects repel uncharged objects.
B) Negatively charged objects are attracted to uncharged objects.
C) Positively charged objects do not attract or repel an uncharged object.
D) Positively and negatively charged objects react differently to uncharged objects.
Answers
Positively charged objects do not attract or repel an uncharged object. The correct option is C.
What is electrostatics?Electrostatics is the study of stationary electric charges. Electric charge is the charge associated with matter that causes it to create and experience a magnetic and electric effect.
When a plastic rod is touched with fur or a glass rod is rubbed with silk, pieces of paper are attracted, indicating that both rods are electrically charged.
Two particles with opposite charges repel each other, whereas two particles with opposite charges attract each other (see Coulomb's law). The electric force between two charged particles is substantially stronger than the gravitational force.
Therefore, the positively charged objects do not attract or repel an uncharged object. The correct option is C.
To know more about electrostatics follow
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How is the levitation of the SCMagLev train achieved? Just write a sentence.
Answers
Answer:
The SCMaglev (superconducting maglev, formerly called the MLU) is a magnetic levitation (maglev) railway system developed by Central Japan Railway Company (JR Central) and the Railway Technical Research InstituteAnswer:
In the case of passive levitation, the levitating-effect is achieved by speed.
Explanation:
If Earth's axis were not tilted, could any area have both a hot summer and a cold winter?
Answers
Answer: What if though the Earth was not tilted? In this case the plane of the Earth's poles would always be perpendicular to the sun. The sun would always be just on the horizon 24 hours a day on every day at the poles. ... It would still be warm at the equator and cold at the poles.
Explanation: Hopefully this Helped
If the earth axis was not tilted the sun would only shine in one place. (the middle) Leaving the rest of the world dark and cold. And no with out the tilt seasons would simply disappear. With out the tilt we would surely be frozen or just really hot.
Hope this helped!!!
need help with this please
Answers
Answer:
It cannot be moving without any force pushing behind it as it is only slightly vibrating unless it is a liquid or a gas which in that case is consantly moving around.
Explanation:
There is no Science section so I'm going to as the question here.
In science, scale is the relationship between a...
Answers
Answer:
Generally, in science scale is used to describe the size or volume of something.
Explanation:
I'm not sure what science you're talking about but in chemistry, scale the range in mass or volume of a chemical reaction.
Also there isn't a 'science section' but there are separate sections for different types of sciences like chem and bio.
All the following are tiny particles that are parts of atoms EXCEPT:
A: Neutrons
B: Protons
C: Electrons
D: Molecules
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The Correct choice is ~
MoleculesThe other three (Neutrons, Protons, and Electrons) are subatomic particles found inside an atom, where as the Molecules are substances that have atoms as it's constituent particles.
The requried, molecules are not tiny particles. Option D is the right choice.
What is an atom?An atom is the smallest unit of matter that retains the properties of an element. Atoms are composed of three types of subatomic particles: protons, neutrons, and electrons.
Here,
Molecules are not tiny particles that are parts of atoms. Rather, they are formed when two or more atoms combine chemically.
Neutrons, protons, and electrons, on the other hand, are the three types of particles that make up atoms. Protons and neutrons are found in the nucleus of the atom, while electrons orbit around the nucleus. These subatomic particles are responsible for the properties and behavior of atoms and the elements they form.
Thus, the requried, molecules are not tiny particles. Option D is the right choice.
Learn more about atoms here:
https://brainly.com/question/13654549
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PLZ HELP FIRST ONE THAT GETS CORRECT WILL RECIVE BRAINLIEST AND 5 STARS AND ALL THAT STUFF NO LINKS OR I WILL REPORT U
plz and thank you <3
What does latitude have to do with the prevailing westerlies?
Answers
Answer:
The westerlies, anti-trades, or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
Explanation:
Prevailing Westerlies are the winds in the middle latitudes between 35 and 65 degrees latitude. ... This creates frictional or drag in the motion which ultimately slows the Westerlies down. The strongest westerly winds in the middle latitudes can come in the Roaring Forties which is between 40 and 50 degrees latitude.
Answer:
the westerlies, anti-trades, or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude.
Explanation:
Write true if the statement is false change the underlined word to make the statement true. Write our answers on a separate sheet of paper.
Answers
Sarah and Charlie both investigated the properties of rocks they found while on a walk. Take a look at the table with their observations. What was the difference between the two sets of observations?
Sarah's Observations Charlie's Observations
The mineral was metallic. The mineral was non-metallic.
The mineral had cleavage. The mineral did not have cleavage.
The mineral was red. The mineral was red.
The mineral had luster. The mineral had luster.
a Sarah observed that the mineral was metallic and red.
b Charlie observed that the mineral was red and had luster.
c Sarah observed the mineral had cleavage and was metallic.
d Charlie observed the mineral was non-metallic and had luster.
Answers
Answer:
b
Explanation:
Answer: C. Sarah observed the mineral had cleavage and was metallic.
Explanation: The answer is C because the question is asking about the difference in their observations. Sarah claimed the mineral had cleavage and was metallic, while Charlie said the opposite.
what's a good conclusion for these three paragraphs? it's a science essay and due in thirty minutes!!
Answers
Answer:
you can write this
Explanation:
as a conclusion, newton have 3 laws of motion, law of intertia, low of force and motion and law of action and rection
PLS HELP!! YOU CAN SKIP THE INFO IF YOU WANT!!
When rain falls to the earth, it just doesn't sit there. Instead, the rain water starts moving. Some of the precipitation seeps into the ground to replenishing groundwater. However, most of it flows downhill as runoff. Runoff is important in filling rivers and lakes, but it also changes the landscape by erosion and can be a powerful mover. Flowing water is a powerful force, capable of moving boulders and carving out canyons. Runoff has an impact on streams and rivers, but it also has an impact on the ocean system. What can you infer about the impact of runoff on Ocean life? Choose ALL that apply.
A) Runoff drops a lot of sediment in the ocean, decreasing salinity.
B) Runoff builds up the coastline, depositing sediment, disrupting habitats of marine wildlife.
Runoff can lead to overgrowth of algae that can cause oxygen deprivation and create a dead zone.
C) Runoff carries pollutants into the ocean, causing illness and death of vulnerable marine populations.
D) Runoff can carry bacteria, viruses, and other pathogens from pet and livestock waste that can harm shellfish and other marine organisms.
Pls give explanation behind if possible
NO SPAM
Answers
Answer:
B,C,D
Explanation:
As a runoff flows over the land surface, stormwater picks up potential pollutants that may include sediment, nutrients (from lawn fertilizers), bacteria (from animal and human waste), pesticides (from lawn and garden chemicals), metals (from rooftops and roadways), and petroleum by-products (from leaking vehicles). Pollution originating over a large land area without a single point of origin and generally carried by stormwater is considered non-point pollution. In contrast, point sources of pollution originate from a single point, such as a municipal or industrial discharge pipe. Polluted stormwater runoff can be harmful to plants, animals, and people.
Hope this helps!
Which statement is true about a surface wave?
It only has properties of transverse waves.
It has properties of both transverse and longitudinal waves.
It only has properties of longitudinal waves.
It does not have properties of either transverse or longitudinal waves.
Answers
Answer:
B. It has properties of both transverse and longitudinal waves.
Srry if im wrong
please can someone answer this question
Answers
it's not really physics it's science but they didn't have a subject for that, anyway the question is.....
the illustration shows how sonar can be used to study the deep ocean which type of waves does sonar use?
I attached the picture
Answers
Another method in creating a temporary magnet is by using electricity. This can be done by wrapping an iron nail with a coil of wire. By passing electricity through the coil of wire the iron nail will become a temporary magnet or an electromagnet. The strength of the electromagnet depends on the size of the electric current and the number of times the coil is wrapped around the nail. If the electricity stops flowing through the coil the nail will no longer be magnetic.
Write a one sentence summary of the above paragraph.
Answers
One method of creating a magnet is coiling wire around a nail and running electricity through it, to make the magnet stronger coil more wire and increase the Voltage.
PLS HELP!!!
Coral reefs are threatened by such atmospheric conditions as
A) the growing hole in the ozone
B) carbon dioxide emissions and global warming
C) increases in UV radiation and the amount of reflected light
D) increased particulate matter resulting in decreased UV rays
Pls give explanation behind if possible
Answers
Answer:
B
Explanation:
Carbon dioxide is resposible for the greenhouse effect
kmomomjnimimioninjknjknk
Answers
Answer:
Yes.
Explanation:
The __________________ is a network of cells and fibers that send messages to different parts of the body.
A.
endocrine system
B.
nervous system
C.
skeletal system
D.
muscular system
Answers
Answer:
Nervous System
Explanation:
By the way this is Biology not Physics!!!
Hope that I helped you!Answer:
B. Nervous system
Explanation:
There are many uses for permanent magnets and temporary magnets like an electromagnet. Electric appliances with electric motors use magnets to turn electricity into motion. Other examples include electric toothbrushes, fans, lawnmowers, and anything else containing a motor.
Magnets are used to hold doors closed, such as in refrigerators, kitchen cabinets and others. Magnets are also used to read and write data on a computer's hard drive or on old-fashioned cassette tapes. There are more magnets in headphones and stereo speakers which help to turn stored music back into the sounds you can hear.
In summary, magnetism is another property of some kinds of matter. There are two poles to a magnet, the south pole and the north pole. Like poles repel and unlike poles repel. There are two different kinds of magnets, temporary and permanent. A temporary magnet can be made by using electricity. All magnets contain an invisible electromagnetic field which surrounds the magnet. There are many uses for magnets, from holding doors closed to helping music sound better with the magnets inside of speakers.
Based on the information provided above how would you describe a magnet?
Answers
Answer:
A magnet is a piece of metal with a strong attraction to another metal object. The attraction a magnet produces is called a "magnetic field."
This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, and so on. and attracts or repels other magnets.
Most magnets are made of iron, and magnets are used in many common items like cassette tapes, credit cards, toys, and compasses. Magnets are used to make a tight seal on the doors to refrigerators and freezers.
mag·net a peice of iron etc
how is sunlight related to seasons and the tilt of the earths axsis
Answers
Answer:
The seasons are caused by the tilted axis of the Earth. Over the course of the year, various portions of the planet are exposed to the Sun's most direct rays. As a result, as the North Pole tilts toward the Sun, the Northern Hemisphere experiences summer. In addition, when the South Pole tilts toward the Sun, it is winter in the Northern Hemisphere, and vice versa.
Explanation:
hope it helps:)