Read the paragraph.

Long ago people made buildings by fitting boards together. Then they learned to shape metals. The invention of nails followed.

Which word does the underlined prepositional phrase modify?
A. the verb made
B. the noun people
C. the verb learned
D. the noun buildings

Can Some One Help Me Please its Language Arts

Water is formed when two hydrogen atoms bond to an oxygen atom. The hydrogen and the oxygen in this example are different elements. therefore the correct answer is option C.

A chemical compound is a combination of two or more either similar or dissimilar chemical elements.

For instance, the chemical molecule CO2 is composed of one carbon atom and two oxygen atoms.

As given in the problem statement water is formed when two hydrogen atoms bond to an oxygen atom.

Hydrogen and oxygen are examples of different kinds of elements.

Thus, when two hydrogen atoms join with an oxygen atom, water is created. In this illustration, hydrogen and oxygen are separate elements. the correct answer is option C.

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Answer:

The ways you could find the volume of a plastic pen could be:

Explanation:

The two suggestions that I give you can apply to find the volume of a plastic pen, with the first method you only have to immerse the pen inside a volumetric container with a certain amount of water, then you look at the amount of water that increased in the container and that increase with respect to the initial value is the volume of the cylinder.

In the second way that I give you, you must divide the pencil into known figures to which you will calculate the volume separately, if it is a common pencil its initial part (where the tip is) you can resemble a cone and the body to a cylinder , so you would use the formulas:

Where:

PI = 3.1416 approximately.

r = Radius.

h = Height.

With which you would have to measure with a ruler the values requested by the formulas and replace to calculate them.

Amit's total displacement can be calculated by using vector addition and the Pythagorean theorem to account for the different directions of his two journeys.

To calculate Amit's total displacement, we need to treat his journey in two segments. The first segment is his displacement from San Francisco to Washington D.C., a flat displacement of 5600km due east. The second segment is his displacement from Washington D.C. to Boston, a displacement of 900km at an angle of 55.0° east of north.

Because displacement is a vector, meaning it has both magnitude (distance) and direction, we can't simply add the two displacements together. Instead, we use vector addition to calculate the total displacement. First, we separate the 900km displacement into its eastward and northward components. The eastward component is 900km * cos(55.0°), and the northward component is 900km * sin(55.0°).

To get the total eastward displacement, we add the eastward displacement from San Francisco to Washington D.C. (5600km) and the eastward component of the displacement from Washington D.C. to Boston. The total northward displacement is just the northward component of the displacement from Washington D.C. to Boston, since Amit did not have any northward displacement in the first segment of his trip from San Francisco to Washington D.C.

The total displacement from San Francisco to Boston is then found by using the Pythagorean theorem on the total eastward and northward displacements. In other words, Amit's total displacement is the square root of (total eastward displacement)^2 + (total northward displacement)^2.

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Answer:

superior vena cava and the inferior vena cava

Explanation:

This U-shaped valley was produced by the action of a glacier. Hence, option (C) is correct.

Glaciation creates u-shaped valleys, often known as trough valleys or glacial troughs. They are particularly typical of glaciation in mountains. In cross-section, they feature a distinctive U shape with steep, straight sides and a flat or rounded bottom (by contrast, valleys carved by rivers tend to be V-shaped in cross-section).

Glaciated valleys are created when a glacier slides down a slope while moving across it, scouring the valley as it goes. When the ice melts or retreats, the valley is left behind and is frequently covered in small rocks known as glacial till or glacial erratic that were carried by the glacier.

Hence, this U-shaped valley was produced by the action of a glacier.

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Answer: The answer is melting point I think.

Explanation: I did the Performance Matters. I added a picture of the question just in case anyone else wants to answer.

Answer:

Science is different from other activities that involve thought because you can create experiments to test any ideas that you have.  Another difference is that the government will pay you for being a scientist unlike being a random person with an idea.

Hope this helps/gives you some ideas :)

Explanation:

Answer:

cc

Explanation:

c

It is a true statement that each SI unit is 10 times smaller than the next smallest unit.

A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.

The measuring unit can be expressed as a multiple of any extra quantity of that kind.

1 kilometer = 10 hectometer

1 hectometer = 10 decameter

1 meter = 10 desimeter

1 decimeter = 10 centimeter

1 centimeter = 10 millimeter

Hence, we can say it is a true statement that each SI unit is 10 times smaller than the next smallest unit.

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Answer:

Waves and glaciers weather and erode the Earth’s surface.

Explanation:

Science

Glaciers are important agents of change on the Earth's surface. They can shape the landscape, provide water resources, and impact global climate patterns.

Glaciers are large masses of ice that form over many years from compacted snow in areas where snowfall exceeds snowmelt. As glaciers move, they can have significant impacts on the Earth's surface, including:

(1)Erosion: Glaciers can erode and shape the land as they move. As they flow downhill, they can scrape and grind rocks and soil, carving out valleys and creating features such as cirques, aretes, and u-shaped valleys.

(2)Deposition: As glaciers melt, they deposit sediment they have carried, creating features such as moraines, drumlins, and eskers. These deposits can significantly alter the landscape and create unique features.

(3)Water supply: Glaciers can serve as a source of freshwater for ecosystems and human populations. As they melt, they can provide water for rivers and streams, which can support a variety of plants and animals.

(4)Sea level: Melting glaciers can contribute to rising sea levels, which can have significant impacts on coastal communities and ecosystems.

(5)Climate: Glaciers play a role in regulating the Earth's climate by reflecting sunlight back into space. As glaciers melt, they can reduce this reflective effect, leading to warming temperatures and further melting of glaciers.

Hence, If glaciers melt they have significant impacts like Erosion, Deposition, Water supply, Sea level, and Climate on our earth's surface.

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Answer: 66 cal

Explanation:

The Heat energy required to flow into a unit mass object to raise its temperature by 1 degree is known as specific heat capacity.

It is given by:

Q = m c ΔT

where, m is the mass, c is the specific heat capacity and ΔT is the change in temperature.

Given:

specific heat capacity of aluminum, c = 0.22 cal/g°C

mass of aluminium, m = 20.0 g  

Change in temperature, ΔT = 15°C

⇒Q = 20.0 g  × 0.22 cal/g°C × 15°C =  66 cal

The amount of energy that needs to flow into 20.0 grams of aluminum to change its temperature by 15°C is 66 cal.

A sand castle that was changed by the ocean waves would be slowly taken away from by the waves and would just become a smooth mound of sand. If Dylan stomped on it then it would still have all of the same sand as before but in a different shape. It would also become a mound of sand but it would have all the same sand as before.

(I don't know if I was supposed to talk about fancy physics stuff so I just gave a basic explanation. I don't know if my answer is really right or not... hope it helped though :))

Answer:

The question seems to be looking for vf, which may be the final velocity.

We know that the car stops, so the car is at rest, this means that the final velocity is equal to zero.

vf = 0 m/s

Now, we also can find the acceleration, the velocity equation can be written as:

v(t) = a*t + 12m/s

We know that in 3 seconds the car stops, so we have:

v(3s) = 0 = a*3s + 12m/s

a= -12m/s*(1/3s) = -4m/s^2

So in those 3 seconds where the car is stoping, the acceleration of the car is -4m/s^2, and the velocity of the car in those 3 seconds can be described by the equation:

v(t) = -4m/s^2*t + 12m/s

It will become smaller and less smooth. Only because with the wind blowing sand or other other small items it will cause the rock to be pelted which will chip the surface, breaking and making the rock small and rougher

Answer:

Option (D)

Explanation:

Wind erosion will take place extensively as the cliff-side is exposed on the outcrop. Due to the wind erosion, the large, jagged rock will undergo the process of weathering where the softer parts of the rock will be eroded much rapidly in comparison to the harder parts, as a result of which the overall size of the rock will decrease and the surface will be uneven and somewhat rough. This will take place over a due course of time. The main agent that is responsible for erosion is the wind.

Thus, the given rock will become smaller and less smooth after a definite period of time.

Thus, the correct answer is option (D).

Evidence supporting the theory of plate tectonics includes B) sea-floor spreading, D) identical rock formations on separate continents, E) matching fossils across oceans, and F) glacial evidence in tropical areas.

To support the theory of plate tectonics, one must look for evidence that indicates movement of the Earth's plates and their historical configurations. The correct options that show evidence supporting this theory are:

To check impulse you will need more information you will require more data as it was diverse with time. In this question, there are two balls with various mass and speed, along these lines they have diverse force. I will expect you are getting some information about the momentum.

The momentum of ball 1 should be:

momentum 1 = mass₁ x velocity₁

momentum 1 = 2kg x 10m/s = 20kg m/s

The momentum of ball 2 should be:

momentum 2= mass₂ x velocity₂

momentum 2= 1.5kg x 20 m/s = 30kg m/s

The answer would be "1.5kg ball because it was travelling faster".

Answer:

the answer is d

Explanation:

The air temperature would drop quickly compared to the soil because the difference between solid and gas. But the ground will stay cooler longer than the air because it contains it better than the air.