Two rocks hit against each other in a fast-flowing stream and break apart. Mosses grow on a rock and produce acids that wear away the rock over time. These statements describe physical weathering. Therefore, option A and D are correct.
What is physical weathering ?Physical weathering, often known as mechanical weathering, is the process that fractures rocks without altering their chemical makeup. The following instances show physical weathering: water moving quickly. For brief periods of time, swiftly rushing water has the ability to raise rocks out of the streambed.
Rocks break down into tiny fragments due to abrasive weathering processes like wind and water. Exfoliation weathering rocks shatter and expand as pressure from unloading is relieved. As water freezes and expands, frost-wedging rocks crack.
When a rock is subjected to physical processes like temperature changes or exposure to the effects of wind, rain, and waves, physical weathering takes place.
Thus, option A and D are correct.
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Final answer:
Statements A and C describe physical weathering, which involves the purely physical breakdown of rocks, such as through collision in a stream or animal activity, without altering their chemical composition.
Explanation:
The question asks which statements describe physical weathering. Physical weathering, or mechanical weathering, involves the breakdown of rocks into smaller pieces without changing their chemical composition. Examples of physical weathering include the expansion and contraction of rocks due to temperature changes, the abrasive action of water or wind, and biological factors like plant roots breaking rocks apart.
A. Two rocks hit against each other in a fast-flowing stream and break apart.
C. Small rocks are pushed together when a mole digs an underground den.
Statement A is an example of physical weathering because it describes the physical action of rocks breaking apart due to collision in a stream. Statement C also illustrates physical weathering, showing how animal activity can physically move and potentially break rocks. In contrast, statements B and D describe chemical weathering, which involves the chemical alteration of rocks, such as mineral changes through oxidation or the action of acids.
[BWS.02] Jim plans to plant coffee beans on the farm. Coffee needs warm, moist, and sunny climate. It always snows for four months, starting from November, in the location where Jim lives. The temperature is generally moderate from June to October. Based on scientific knowledge, which of these would be the best month to plant coffee?
Final answer:
The optimal month for Jim to plant coffee beans is June, before the snow season and during the warm, moist climate period. Climatic factors and temperature changes due to climate change should also be considered in planning for coffee production.
Explanation:
The best month for Jim to plant coffee beans on his farm, considering the climate requirements for coffee growth (warm, moist, and sunny conditions) and the pattern of snow from November, would be June. This period, just after the moderate temperatures from June to October, would offer the newly planted coffee trees the optimal window for warm temperatures before the cold, snowy conditions set in. It's important for Jim to avoid the snow season and capitalize on the warm and moist period for the plantation.
Moreover, climate change has been an increasing concern for coffee production globally. In regions like Colombia, rising temperatures and changes in precipitation have adversely affected coffee output, requiring the development of new agricultural methods. Jim should be aware of and prepared to respond to these challenges by considering shade-grown coffee and soil health management to potentially mitigate climate change impacts.
Which law represents a balanced chemical equation? Avogadro’s hypothesis, ideal gas law, law of conservation of mass, Newton’s first law of motion, Newton’s second law of motion
Answer:
Law of conservation of mass.
Every chemical equation adheres to the law of conservation of massIt state that "Matter cannot be created nor destroyed. Therefore there must be the same number of atoms of each element on each side of chemical equation.If the archerfish spits its water 60. degrees from the horizontal aiming at an insect 2.0 m above the surface of the water, how fast must the fish spit the water to hit its target? The insect is at the highest point of the trajectory of the spit water. Use g = 10. m/s2.
Answer: To hit the target fish must spit with the velocity of 7.30 m/s.
Explanation:
Highest point of the trajectory = H = 2 m
Angle at which archer fish spit = θ = 60°
Acceleration due to gravity = g = 10 [tex]m/s^2[/tex]
The maximum height of the projectile is given as:
[tex]H=\frac{u^2\sin^2\theta }{2g}[/tex]
[tex]2 m=\frac{u^2\sin^2(60^o)}{2\times 10 m/s^2}[/tex]
[tex]\sin 60^o=\frac{\sqrt{3}}{2}[/tex]
[tex]u^2=\frac{2 m\times 2\times 10 m/s^2\times 4}{3}=53 m^2/s^2[/tex]
[tex]u=7.30 m/s[/tex]
To hit the target fish must spit with the velocity of 7.30 m/s.
To hit the target fish must spit with the velocity of 7.30 m/s.
Highest point of the trajectory = H = 2 m
Angle at which archer fish spit = θ = 60°
Acceleration due to gravity = [tex]g = 10 m/s^2[/tex]
The maximum height of the projectile is given as:
[tex]H=(u^2\sin^2\theta )/(2g)[/tex]
[tex]2 m=(u^2\sin^2(60^o))/(210m/s^2)[/tex]
[tex]\sin 60^o=\sqrt{(3)/(2)}[/tex]
[tex]u^2=(2 m \times2 10 m/s^2 4)/(3)=53 m^2/s^2[/tex]
u=7.30 m/s
Why would machine-operated stopwatches be used at sports events instead of hand-operated stopwatches?
Letter A on this diagram is an example of
A.) vaporization
B.) condensation
C.) sublimation
D.) deposition
PLEASE HELP ME WITH THIS.......
An object 15cm high is 30cm from a pinhole camera.if the height of the image formed at the back of the camera is 10cm,the image distance is?
TO solve this problem, we simply need to use ratio and proportion. From the statement problem we can say the ratio height : distance, so that: (let us say that X is the image distance)
15 cm : 30 cm = 10 cm : X
We know that the symbol : means division so:
15 cm / 30 cm = 10 cm / X
X = 10 cm * 30 cm / 15 cm
X = 20 cm
So the image distance is 20 cm
Element of thunderstorms heavy rain
' should be presented—a succinct paragraph that encapsulates your main points and directly addresses the question asked. Secondly, an '
When crafting your answer, it is crucial to address all parts of the question and to support your points with evidence from provided readings or relevant knowledge. Aim for an in-depth exploration of the question rather than surface-level commentary. Avoid long rambling answers that stray from the main points. As per the instructions, a thorough response should contain a minimum of 3 to 4 well-developed paragraphs, with each paragraph consisting of at least 5 to 6 sentences. This format demonstrates a robust engagement with the question and reflects a high level of effort in constructing a considered response that is free of spelling and grammar errors.
To determine the density of an object, which set of instruments would be helpful?
triple beam balance and meterstick
The set of instruments that would be helpful to determine the density of an object are triple beams balance and meterstick
Triple beam balance refers to an instrument that can be used to measure the mass of different objects. It is called triple beam balance because it is made up of three beams.
Further ExplanationEach of the beams has different weights and their size matches the gradations of the notched scale present on each of the beam. The size of the beams varies, the middle beam has the largest size, the far beam has a medium size and the font beam is the smallest size.
The basic parts of a triple beam include:
Weight pan: the object to be weight is placed on the weight panBase: the base is beneath the weight pan and can be set up to properly fit on the workbenchBeam: the beams can be used to get the level of precisionRiders: they are on top of the beams and indicates the mass (g) of an objectPointers: the pointer marks the mass of the object on the scaleZero adjustment knob: the knob are used to set the beam balance to zero marks before useAlso, meterstick can be helpful to determine the density of an object
LEARN MORE:
To determine the density of an object, which set of instruments would be helpful? https://brainly.com/question/6286782To determine the density of an object, which set of instruments would be helpful? https://brainly.com/question/14239000KEYWORDS:
densityobjectmeterstickpointersknobtriple beams balanceWhen the thermal energy of a material decreases, _____.
it melts
its temperature decreases
its temperature increases
the surrounding environment cools off
D. The surrounding environment cools off
Please i really need help..
What energy transformation occurs when a battery-powered flashlight is switched on?
A.) chemical to light to electrical
B.) electrical to light to chemical
C.) chemical to electrical to light
D.) electrical to chemical to light
Answer:
its chemical to electrical to light, I took the test and it was right, hope this helps!
Explanation:
Please i really need to get this done today..
Describe the role of producers in a food web. Are producers the basis of all food webs? Justify your answer.
Which of the following is true?
A.
The Earth exerts a gravitational force on the Moon, but the Moon does not exert a gravitational force on the Earth.
B.
The Moon exerts a gravitational force on the Earth, but the Earth does not exert a gravitational force on the Moon.
C.
The Earth and Moon do not exert gravitational forces.
D.
The Earth and Moon both exert a gravitational force on each other.
Answer:D.
The Earth and Moon both exert a gravitational force on each other.
Explanation: 100% right
describe the properties of gases
Answer:
Gases has the following properties:
i) Gases are less dense than liquids and solids
ii) Gases molecules has large space between them so, they can be easily compressed
iii) Gases has indefinite shape and volume
iv) Gases can occupy all the space provided
v) Gases molecules has random motion and collisions
vi) When gases are heated their volume increases
vii) Gases can diffuse from one place to another due to the difference of concentration of molecules
CO2,NaCl,HCl these maybe classified as a) elements and compounds b) elements and molecules C) elements and pure substances D) compounds and pure substances
Which of the following is a method of purifying water?
A. Fixation
B. Adding iodine
C. Freezing
D. Aeration
I’m between c & d
Two examples of renewable energy resources
A planet is orbiting a nearby star. Suppose that the star’s gravity increases over time. What effect will this increase most likely have on the planet’s path of motion?
Answer:
B
Explanation:
Calculate the G.P.E. in joules of a 675-newton climber at the top of a 3,050-meter mountain in Colorado.
Answer:2673
Explanation:
Final answer:
The gravitational potential energy (G.P.E.) of a 675-newton climber at the top of a 3,050-meter mountain is calculated as 2,058,750 Joules.
Explanation:
To calculate the gravitational potential energy (G.P.E.) of a 675-newton climber at the top of a 3,050-meter mountain in Colorado, we use the formula G.P.E. = weight × height × acceleration due to gravity (g = 9.8 m/s²). Assuming that the weight given is the force due to gravity on the climber, the weight already accounts for the gravitational acceleration, so we do not need to multiply by 9.8 m/s² again. Therefore, the G.P.E. is simply the product of the weight and the height.
G.P.E. = 675 N × 3,050 m
G.P.E. = 2,058,750 Joules
Thus, the climber has a gravitational potential energy of 2,058,750 Joules at the top of the mountain.
How do consumers sometimes interact with producers?
Explanation:
The food chain consists of autotrophs (producers) and heterotrophs (consumers). All animals and plants fall into these categories.
The autotrophs are the first stage of the food chain. They are mostly plants. They use the radiation from the sun to fulfill their energy needs. In doing this process the autotrophs release oxygen. The process is known as photosynthesis. The plants take in carbon dioxide in the atmosphere released by heterotrophs during respiration and the plants in turn release carbon dioxide. Also, autotrophs provide a food source for the heterotrophs.
Every producer and consumer interact in some way, completing food chain.
Pressure increases with depth towards the center of earth. In which layer would you expect pressure to be the greatest.
Which of the following is a type of object that might contain billions of stars?
A.
a solar system
B.
a galaxy
C.
an asteroid
D.
a planetary system
Answer:
A galaxy because that is the largest group and contains many things.
Explanation:
how would you describe a meter in english units
Answer: a little longer than a yard (about 3 ft)
Explanation:
If the mass of a material is 43 grams and the volume of the material is 14 cm^3, what would the density of the material be
What are the two factors that affect the frictional force between two surfaces?
Answer:
The amount of force and the angle between them.
Explanation:
a driver of a car traveling at 15.0m/s applies the brakes, causing a uniform acceleration of -2.0m/s^2. how long does it take the car to accelerate to a final speed of 10.0m/s? how far has the car moved during the breaking period?
Explanation:
Initial speed of the driver, u = 15 m/s
Acceleration of the driver, [tex]a=-2\ m/s^2[/tex]
Final speed of the driver, v = 10 m/s
Let t is the time taken by the driver to accelerate to the final speed. Using first equation of kinematics as :
[tex]t=\dfrac{v-u}{a}[/tex]
[tex]t=\dfrac{10-15}{-2}[/tex]
t = 2.5 seconds
Let d is the distance the car moved during the breaking period. Using the third equation of kinematics as :
[tex]v^2-u^2=2ad[/tex]
[tex]d=\dfrac{v^2-u^2}{2a}[/tex]
[tex]d=\dfrac{(10)^2-(15)^2}{2\times (-2)}[/tex]
d = 31.25 meters
Hence, this is the required solution.
A gas tank holds 50L. If the density of gasoline is 0.7g/ml, how much mass will the tank of gas have?
a boat is travelling at a velocity of 45m/s S. if the current of the river is moving at a velocity of 15m/s due east, what is the resultant velocity of the boat
vy = 10 m/s v2
y + v
2
x = v
2
ground
vx = 1.5 m/s (10)2 + (1.5)2 = v
2
ground
vground = 10.11 m/s
tan θ =
10
1.5
θ = 81.47
Answer:
Explanation:
31 m/s
23° north of east
What is Agent Object Notation? ( For Force Diagrams. )
If the mass of a material is 43 grams and the volume of the material is 14 cm^3, what would the density of the material be
Why do some environmental groups oppose tidal energy?
Answer:
Environmental groups oppose tidal energy because of the following potential negative consequences:
By changing the flow of tides with dams, there can be negative impact on the aquatic shoreline of the ecosystem;building of barrages may affect the sedimentation and turbidity of water within water basinsthere are animals what depend on the flow of tides for existence feeding and movement. The techology which captures the energy produced by the ties and converts them to electricity may affect the natural flow fo the tides thus impactin negatively on the aquatic and non-aquatic habitat.Cheers!