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
Match the Vocabulary terms with their definitions.
Answers
Mechanical energy: Is the sum of an objects kinetic energy and potential energy
electrical energy: Kinetic energy that is caused by moving electrons
light energy: a kind of kinetic energy that moves in waves and can be seen.
Your answer on number 3 is correct.
Number 4:”is the sum of an kinetic energy & potential energy” Number 2:is “kinetic energy caused by moving electrons” because Electrical Energy uses this,so Therfore,this answer is correct.”Energy stored in matter would be Number 1.hope this helped!
Describe a temperate climate
Answers
Answer:
Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.
Answer:
Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters
Explanation:
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:
According to the dictionary, being fit means you can do certain physical activities.
A.
True
B.
False
Answers
Answer: True but not all activity
Explanation:
Answer:
A. True. But its not valid for everything
Giving BRAINLIESTTT
PArt A: Describe the type of change in matter that occurred in thisinvestigation and provide evidence to support your response.
Part B
Describe a chemical property of baking soda.
Part C
Explain how the results of the investigation support the Law of Conservation of Matter.
Part D
Provide a brief explanation whythe investigation measurements differed.
Answers
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
kmomomjnimimioninjknjknk
Answers
Answer:
Yes.
Explanation:
FIRST ONE WITH CORRECT ANSWER GETS BRAINLIEST AND 5 STARS AND ALL THAT STUFF, and thank u <3
What does latitude have to do with the prevailing westerlies?
Answers
Answer:
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.
Explanation:
Hope this helps
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.
Answers
Answer: The verb phrase can be found in the last sentence(?
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:
please can someone answer this question
Answers
because the velocity swings over the earth and around to the left
Take a look at a bicycle with gears. Using what you have just learned, answer the following questions:
a. Which gear combination would you like to use when you want to pedal with as few strokes as possible and have your wheels turn as many times as possible?
b. Now you are going up a hill and want to maximize the force you deliver to the wheel. You aren’t concerned with how many strokes you are making, but you want to get as much force to the wheel as possible. Which gear combination would you use now, and why?
Answers
Answer:
answer a: a large front gear with a small back gear
answer b: a small front gear with a large back gear
Explanation:
just simple gearing ratios
To rotate wheels turn many times with few strokes a large front gear with a small back gear is required and to minimize the force a small gear in the front and the large back gear are required. So, when a large amount of energy is applied the bicycle moves more as compared to less energy applied.
What is a Gear?Toothed wheel mounted to a spinning shaft, used as a machine part. With the teeth from one gear engaging the teeth of the other gear, gears work together to transfer and modify rotational movement and tension (turning force) without slipping. The ratios of rotational speeds and shaft torques are constant when a pair of matching gears have teeth that are aligned in circles, or when the gears are serrated wheels. Speed control and torque ratios result from the arrangement of the teeth on non-circular bodies.
Typically, gears are round. Gear teeth's contact surfaces need to be precisely formed to a particular profile in order to transfer movement easily and with a steady speed proportion at every moment.
To know more about Gear:
https://brainly.com/question/14455728
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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
HELP ASAP DUE AT 5;30
Answers
Answer:
The Sun
Explanation:
It is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.
I hope it 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
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!!!
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!
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:
Could somone help me with this please TvT ill give brainliest
