Answers
6 H
7G
8 E
9 C
10 D
11 A
12 F
4. Index Fossil
Related Questions
Identify the clean sources of energy.
Answers
Answer:
biomass, geothermal, hydropower, solar, and wind.
hope this helped!
If a bowler rolls the bowling ball down the alleyway with a force of 1,000N. The ball exerts a reaction force again the alleyway with approximately how much force? Explain your thinking behind this.
Answers
Answer:
1,000
Explanation:
because the ground won't stop the ball so it is always going to stay the same
can someone please help me :)
Answers
Answer:
black cra00ie( couldn't put the actual word because it has an error)
Explanation: A tertiary consumer is at the top most level of a food chain :)
i need help about this question of physics
Answers
Answer:
D
Explanation:
Each notch is 1m,
60 kg 2m away is equal to 40 kg 3 m away
D is 3m away
If you place a piece of paper containing a small letter "d" on the stage, what will the image look like under the microscope?
A.
b
B.
p
C.
d
D.
backwards p
Answers
because it would look like a backwards p
The required image that will be observed will look like a backward letter "p". The correct answer is D. backward p.
What is microscope?A microscope is a scientific instrument that is used to observe objects that are too small to be seen by the eye. Microscopes use various optical techniques to magnify and enhance the image of the object, allowing it to be seen in greater detail.
Here,
The image of the letter "d" under a microscope will depend on the type of microscope being used and the orientation of the letter on the stage. However, in general, if the letter "d" is placed on the stage of a compound microscope, the image will be inverted and reversed from left to right. This is because a compound microscope uses multiple lenses to magnify the image, which can cause the image to be flipped both vertically and horizontally.
So, if the letter "d" is placed on the stage of a compound microscope, the image that will be observed will look like a backward letter "p". The correct answer is D. backward p.
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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:
I need help with matching this to the correct box. Please help, Thank you!
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That is all I know I am afraid. Sorry but I don’t really know how to explain this one.
2 spheres are made from the same material. One is smaller and one is larger. Is the smaller sphere made up of smaller atoms than the larger sphere?
Answers
Answer:
No
Explanation:
It’s just made up of less atoms.
A tourist at scenic Point Loma, California uses a telescope to track a boat approaching the shore. If the boat moves at a rate of 15 meters per second, and the lens of the telescope is 50 meters above water level, how fast is the angle of depression of the telescope (θ) changing when the boat is 190 meters from shore? Round any intermediate calculations to no less than six decimal places, and round your final answer to four decimal places.
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Answer:not sure just here for points
Explanation:
yeah
Both acids and bases produce ions when dissolved in water. Propose a way to describe what
hydroxide ions (OH-) and H+ (hydrogen) ions are. What do they have to do with acids and
bases and the pH scale?
Answers
Answer:
See explanation
Explanation:
Acids and bases contain ions that interact with water. According to the Arrhenius definition, acids are substances that produce hydrogen ion in water while bases are substances that produce hydroxide ion in water.
The pH scale is a graphic description of the hydrogen or hydroxide ion present in a sample. Since pH= -log[H^+], the higher the pH , the lower the hydrogen ion concentration and vice versa.
Similarly, pOH= -log [OH^-] , hence the more the OH^- concentration the lower the pOH.
However pH + pOH =14.
Thus the concentration of hydrogen or hydroxide ions present determines the pH of any solution.
help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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Voyager 2 is a space probe, launched in 1977, to study the outer planets. It will continue to travel through space for thousands of years without stopping. Which one of Newton's laws does this describe?
(I'm new to this website so Im just getting the hang of it)
Answers
Voyager 2 is a space probe, launched in 1977, to study the outer planets, it will continue to travel through space for thousands of years without stopping, and it travels on Newton's first law of motion.
What is the significance of Newton's first law of motion?It is of great importance as it is used to predict the behavior of objects in motion like Voyager 2 and to understand performance in sports such as skiing and skating etc., and help in improvement. It is also helpful for the development of new technologies for the space program and in the understanding of mechanical systems such as vehicles, machinery, etc.
Hence, Voyager 2 is a space probe, launched in 1977, to study the outer planets, it will continue to travel through space for thousands of years without stopping, and it travels on Newton's first law of motion.
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The cyclist bends while riding a cycle in order to
Feel comfortable
Reduce his weight
Reduce the air drag
Increase energy consumption
Answers
Answer:
reduce the air drag
pls mark it as brainloest
Please write in complete sentences to answer the following:
Give two examples of electromagnetic waves, explain how they are used, and explain why they are important in your life.
Points available:
1. First Type of EM wave (1 point), how it's used (2 points), why it's important (2 points)
2. Second Type of EM wave (1 point), how it's used (2 points), why it's important (2 points)
Answers
Answer:
Radio waves and the are various frequencies of radio waves are used for television and FM and AM radio broadcasts, military communications, mobile phones, ham radio, wireless computer networks, and numerous other communications applications. They are important because Radio waves are very widely used in modern technology for fixed and mobile radio communication, broadcasting, radar and radio navigation systems, communications satellites, wireless computer networks and many other applications.
Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication. They are important because microwaves play an increasingly wide role in heating and cooking food. They are absorbed by water and fat in foodstuffs (e.g., in the tissue of meats) and produce heat from the inside. In most cases, this reduces the cooking time a hundredfold.
Explanation:
plss s ss s s s s s s s s
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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.
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Answer:All of the above
Explanation:
How are air temperature and air pressure related?
Low air temperature causes the air particles to be packed together, creating high air pressure.
Low air temperature causes the air particles to spread out, creating low air pressure.
High air temperature causes the air particles to rise, creating low air pressure.
High air temperature causes the air particles to stay close to the ground, creating high air pressure.
Answers
Answer:
You already answered yourself
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
Amir and Gracie left some evidence of breakfast behind. Luckily, some of it can be changed back. What does Mosa write down as clues that a substance will easily change back?
Answers
Answer:
You could say that it was not a chemicly change because that is when you say this is just a example that if you cook eggs you cant un-cook them
Explanation:
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
true or false, most waves are generated by vibrations
Answers
Answer:
true
Explanation:
Answer:
This answer is True
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
need help fast!!!! plz
Answers
4. The Himalayan Mountains tower as high as 8,854 m above sea level. The rate of plate motion is about 10 cm per year. Use the diagram to explain how the Himalayas formed. Predict how they might look in 10 million years.
Answers
Answer:
Forty million years ago, the continent of India, which was being carried northward by the Indo-Australian plate, collided with Asia forming the Himalayan mountain range (fold mountains). Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
Answer:Since the initial encounter, the subcontinent of India has moved 2,000 kilometers farther north at a rate of 5 centimeters a year, sliding beneath Asia as it moves. In 10 million years India will plow into Tibet a further 180km. This is about the width of Nepal.
What are the effects of radiation on different surfaces such as an ice- covered lake, a forest, an ocean, or an asphalt road?
Answers
Radiation can affect different surfaces in different ways depending on various factors. For instance, ionizing radiation can break apart water molecules in an ice-covered lake and damage plant cells in a forest, whereas non-ionizing radiation can support photosynthesis and growth. In the ocean, radiation can have both positive and negative effects, and exposure to high levels of ionizing radiation can cause damage to the asphalt of a road over time.
What is the effect of radiation?The effects of radiation on different surfaces can vary depending on a number of factors, including the type of radiation, the intensity of the radiation, and the properties of the surface material.
When radiation interacts with matter, it can cause a range of effects, including ionization, excitation, and heating. These effects can lead to changes in the physical and chemical properties of the material.
For example, when ionizing radiation (such as gamma rays or X-rays) interacts with water molecules in an ice-covered lake, it can break apart the water molecules and produce highly reactive free radicals. These free radicals can then go on to react with other molecules in the water, leading to changes in the chemical composition of the ice. The effects of radiation on a forest would depend on the type of radiation and the type of trees and plants present. High levels of ionizing radiation can damage or kill plant cells, leading to a reduction in growth and productivity. Non-ionizing radiation (such as visible light) can be used by plants for photosynthesis and growth.
In the case of an ocean, radiation can have a range of effects depending on the depth of the water and the type of radiation. For example, visible light can penetrate several hundred meters into the ocean, allowing photosynthetic organisms such as phytoplankton to thrive. On the other hand, ionizing radiation from radioactive materials can accumulate in the bodies of marine organisms, potentially leading to long-term health effects.
On the other hand, the effects of radiation on an asphalt road would depend on the type of radiation and the composition of the road. For example, exposure to high levels of ionizing radiation can lead to the breakdown of the chemical bonds in asphalt, potentially causing the road to become brittle and crack over time. Additionally, radiation exposure can lead to the formation of free radicals in the asphalt, which can react with oxygen in the air and cause the road surface to become discolored or faded.
Therefore, the effects of radiation on different surfaces can vary depending on a range of factors, including the type of radiation, the intensity of the radiation, and the properties of the surface material.
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Who likes horses? i mean LOVES Horses?
Answers
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
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.
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.
Why does the velocity of the ball change when it hits the tree?
Answers
Answer:
If a ball is thrown vertically upward from the roof of a 32 ft. tall building with a velocity of 80 ft/sec, it's height in feet after t seconds is s(t)=32+80t-16t^2
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