Answer: the answer is b
A 20 kg rock is on the edge of a 100 meter cliff. What is the
potential energy of the rock and if the rock falls off the cliff,
what is its kinetic energy just before striking the ground?
a 361.4 kJ
b 1kJ. 1 kJ
C 19.6 kJ, 19.6 kJ
d 10 kl. 5.5 ku
Potential energy is 19.6 kJ and kinetic energy is 19.6 kJ.
What is energy?Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.
potential energy = mgh = 20*9.8*100 = 19.6 KJ
At the lowest point all potential energy is converted into kinetic energy so kinetic energy = 19.6 KJ.
Potential energy is 19.6 kJ and kinetic energy is 19.6 kJ.
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Do you do more work if you go up a mountain at a steep angle versus a gradual angle?
Answer:
For an inclined plane, less force is put into moving an object up the slope than if the object were lifted straight up, so the mechanical advantage is greater than 1. The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.
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the earth is unevenly heated at different latitudes due to the curvature of the earth. this uneven heating leads to large currents that drive weather patterns around the globe.
A. Radiation
B. conduction
C. convection
The uneven heating leads to large currents that drive weather patterns around the globe because of Radiation. Hence, option A is correct.
What is Radiation?Heat radiation is the process by which heat is transferred from one body with a high temperature to another with a lower temperature when the two bodies are not in close proximity to one another or are separated by space.
Due to the rotational and vibrational motion of its molecules and atoms, all physical substances, whether they are solid, liquid, or gaseous, can radiate energy through a process known as electromagnetic radiation. Depending on the body's temperature and the surface's makeup, this energy flux can vary in intensity. At all temperatures, radiation is present, and as the temperature rises, so does the rate of emission.
Hence, it proves that option A is the correct answer.
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a student pressing two flat pieces of clay together, causing the clay to rise up at the boundary
A student has made a simple clay model that shows the motion of one type of plate boundary.
Part A
Which type of plate boundary is the student modeling? Explain your answer.
Answer:
the student is modeling a convergent plate boundary. The image shows the plates colliding to form a mountain-like structure
Explanation:
My cousin took the exam
Brandon has a Nissan GTR. He drives 198.5 miles in 2.3 hours. What is his average speed?
what is this please please please help me out
Answer: the answer is -4,3
Explanation: hope this helps :)
Why did SpaceX install sun shields on the Starlink satellites? A to reduce light pollution caused by the satellites B to keep the satellites cool C to increase the amount of light reflected by the satellites D to provide solar power to the satellites
Answer:
The Answer is A
Explanation:
SpaceX was hoping to limit the effect on astronomy by providing sun shields to Starlink.
Hope I could help. If I was indeed correct, I would appreciate it if you can mark me as Brainliest.
Write a description of the race using these words (all of them):
https://video.link/w/jGtKb
a. Speed
b. Constant Speed
c. Average Speed
d. Velocity
e. Acceleration
sorry i cant link a video
Answer:
of course
Explanation:
Plz help me I'll mark you brainliest
14 Explain How do you think the three-story-high
ripple marks shown here were formed?
Answer:
Ripple marks are caused by water flowing over loose sediment which creates bed forms by moving sediment with the flow. Bed forms are linked to flow velocity and sediment size, whereas ripples are characteristic of shallow water deposition and can also be caused by wind blowing over the surface.
Explanation:
The law of superposition allows geologists to determine _______ timelines.
A.) Relative
B.) Exact
C.) Probability
D.) Coventional
Answer
b exact because The principle of fossil succession states that different types of fossil organisms.
The law of superposition allows geologists to determine relative timelines. Using superposition principle, the relative age of rocks in the earth surface can be determined.
What is super position principle?This law states that, older sedimentary rock layers are positioned below younger sedimentary rock strata according to the law of superposition. scientifically speaking, rocks and silt build up in layers throughout time, with each layer forming in temporal order.
The younger rock layers are found beneath the older rock layers, which form first. In the middle of the 1600s, Nicolaus discovered this idea after examining rock layers and concluding that geological history was obvious.
Applying this to the actual world, the oldest layer of rock would be found at the bottom of a cross-section of a mountain or deep cavern, and each successive layer above it would be younger or newer. It portrays the image of rock strata produced in stacks through the word superposition, which means to set one on top of the other.
Hence, the relative age of rocks and the period of its formation can be determined.
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What do we call the area of a solar eclipse where the Moon covers the Sun, but the outline of the Sun can still be seen?
Penumbra
Umbra
Antumbra
In the text box below, explain how the periodic table is organized. Be sure to use the following terms within your description: atomic number, protons, group(s), period(s), energy level(s), valence electron(s). Be sure to highlight each of these terms as you use them.
Answer:
The periodic table is arranged by atomic weight and valence electrons. These variables allowed Mendeleev to place each element in a certain row( called a period) and column( called a group). The table comprises seven rows and 18 columns.
Explanation:
Hope this helped :) This is just an introduction because there was no specified word limit.
give a ghost story fit for a teen
Answer: ok so this is a true story when i was little and i always like telling story's so here it is...
Explanation: when i was little i had parents that weren't as good and our house was like scary and it had spiders and i was always scared of them so for Christmas me and my 2 sisters got a doll like a American doll and we got princesses and so my older sister Alexis got Cinderella and my other sister heaven she was the second oldest and she got the little mermaid Ariel and i got belle beauty and the beast and so it was getting late and so me and my sister heaven went to put our dolls away in a box and my sister Alexis wanted to put hers in our room we all share a room and a bed and so she decided to put it on this little princess make up dressing table(i found an image that what it kind of looked like ig) siting down and so everyone was sleeping except my older brother he was the oldest and so he wanted to tell my sister Alexis something and our room door was cracked open and before he went to check on her the doll moved and stand up and when down on the floor and walking in circles and my brother saw it and the doll stopped and the dolls head turned facing him and just drooped and so he ran in his room and stayed up all night till someone else woke up soo yea he never liked dolls never and now thats it i know it took ling but yea
Organism would make the best index fossil. Answers a , b , c , d please help
Answer: You didn't put what a, b, c, or d is so how is anyone supposed to know what the answer is?
Where the ocean is warm, the water may be saltier. why?
Answer:
Temperature and salinity deep waters are colder and saltier than the surface waters.
Explanation:Hope this helps if this doesn't sorry i couldn't explain better
pls help aspappppppp
Answer:
Im pretty sure its D
Explanation:
Answer:
Explanation:
A.
help with i) and ii) pls >_
Answer:
4 it the corrcert anser
Explanation:
A child’s toy rake is held so that its resistance length is 0.85 meters. If the mechanical advantage is 0.43, what is the effort distance? plz
Answer:
1.28
Explanation:
The diagram shows the forces acting on a cart.
Which statement correctly describes the motion of the cart at this point in time?
A) The velocity is remaining constant because forces F1 and F2 are balanced, and both of these two equal forces are perpendicular to the velocity.
B) The speed of the cart is increasing because forces F1 and F2 are balanced, and both of these two equal forces are perpendicular to the velocity.
C) The speed of the cart is decreasing because forces F4 and F3 are unbalanced, and the greater of the two forces is acting in the opposite direction of the velocity.
D) The direction of the velocity is changing because forces F4 and F3 are unbalanced, and the greater of the two forces is acting in the opposite direction of the velocity.
Answer:
c) the speed of the cart is changing
Where is the location of an earthquake's epicenter?
Explanation:
The center of the circle will be the location of your seismograph the epicenter of the earthquake is somewhere on the edge of that circle
Science/ physis's please help me
Answer:
nucleotides
Explanation:
Answer:
B. Nucleotides
Explanation:
Law of Conservation States
a
An object in motion stays in motion unless an outside force acts upon it
b
Force = mass x acceleration
c
Energy is neither created or destroyed it just changes form
d
For every action there is a equal and opposite reaction
Your answer is option “C”
Pls dont answer for the points, please ligit help:)
Answer:
I don't get it??
What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity D an increase in the chance of rain
Answer:
A
Explanation:
warm air rises creating low presure
cold air sinks creating high presure
so this means that temprature is realated to presure.
I NEED ASAP
Why is soil porosity important for plant growth?
(don't answer for the points plz)
Answer:
Soil porosity is important for many reasons. A primary reason is that soil pores contain the groundwater that many of us drink. Another important aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so a well-aerated soil is important for growing crops.
Explanation:
I Hope This Helps :D
Some scientists believe that:
minerals can cause enough pressure on land masses for folding faulting
moving magma can cause enough pressure on land masses for faulting
freezing can cause enough pressure on land masses for faulting
erosion can cause enough pressure on land masses for faulting.
PLEASE ANSWER RIGHT I'M IN A TEST
answer:
minerals have alot to deal with pressure and the moving of land masses and erosin is common when the land moves
Explanation:
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which three items are surface features of the sun A. sunspots B. solar flares C. radiation Zone D. Prominences
Answer:
B. solar flares sunspots, solar flares prominences
Explanation:
Some features of the Sun's surface include sunspots, solar flares, and prominences
pls mark me brainliest its the right answer
Students are investigating the rocks with fossil markings that are found in an area that was once covered by a lake. The rocks they are observing are MOST likely —
igneous
metamorphic
sedimentary
thermic
Answer:
sedimentary rock
Explanation:
The rocks they are observing are MOST likely sedimentary. The correct option is C.
What is sedimentary rock?Sedimentary rock is one of the three main types of rock formed on Earth (the others being igneous and metamorphic rocks). It is formed by the accumulation and solidification of sediment, which is any material that is transported by wind, water, or ice, and eventually deposited on the Earth's surface. This can include particles of minerals, rocks, and organic matter.
Over time, these sediments are buried and subjected to pressure and compaction, which causes them to become more tightly packed and solidified. The weight of the overlying layers can also cause the sediment to undergo cementation, where minerals dissolved in water between the particles precipitate and bind them together. As the sediment becomes more compacted and cemented, it eventually becomes a solid rock.
Sedimentary rocks are often characterized by their visible layers or strata, which can contain fossils and provide a record of past environmental conditions. They are also important sources of natural resources, such as coal, oil, and natural gas, as well as many of the minerals and building materials used in construction. Some common examples of sedimentary rocks include sandstone, shale, and limestone.
Here in the question,
Sedimentary rocks are formed from the accumulation and consolidation of sediment, often containing fossils. The fact that the area was once covered by a lake supports the idea that the rocks would have been formed from sediment deposited in the lake. Therefore, option C is the most likely and correct choice.
Igneous rocks are formed from molten magma and do not typically contain fossils. Therefore, option A is not correct.
Metamorphic rocks are formed from preexisting rocks that are altered by heat and pressure. They also typically do not contain fossils. Therefore, option B is not correct.
Thermic is not a commonly used term in geology, so option D is not a valid choice.
Therefore, The correct option is C. sedimentary.
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HELP!!!
on a cold winter night, you sit near a fire place.The heat travels toward you and heats you even though you are not in contact with the flame.
A. Radiation
B. conduction
C. convection
Answer:
radiation
Explanation: