Answer: Option A: The canoe would move backward a bit.
Explanation:
Newton's third law of motion states that for every action there is equal and opposite reaction. This means when you threw a heavy stone in front of you, you applied a force. Equal and opposite force acted on the canoe and it moved backward a bit.
Hence, according to Newton's third law of motion, when you throw a heavy stone forward, and equal amount of force will push the canoe backwards.
Final answer:
In a canoe, throwing a heavy stone into the water away from you will cause the canoe to move backward a bit due to Newton's Third Law of Motion. This motion is equal and opposite to the force applied when throwing the stone. The principles of forces help understand canoeing strategies, as well as the motion and sinking of objects in water.
Explanation:
When you are in a canoe on a calm lake and throw a heavy stone into the water, what you're experiencing is an application of Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. So, if you throw the stone away from the canoe, the force of throwing the stone forward will produce a reactive force in the opposite direction, causing the canoe to move backward a bit, which corresponds with option A. This movement is temporary, and once the initial reactionary force dissipates, the canoe will stop moving backward unless other forces are at play.
Canoeing techniques also involve understanding the forces at play. When paddling a canoe upstream, staying near the shore is wise due to the slower water speeds caused by friction between the water and the riverbanks. Meanwhile, when canoeing downstream, it is often best to stay near the middle where the current is stronger and can assist in propelling you forward with less effort.
This understanding of forces also clarifies that the motion of objects, such as a stone thrown into water, can be influenced by factors like density and gravitational force, rather than only the force exerted by a throw. When a stone is placed in water, it sinks because the stone's density is greater than water's, leading to a gravitational force that exceeds the buoyant force on the object.
True or False? each SI unit is 10 times smaller than the next smallest unit.
It is a true statement that each SI unit is 10 times smaller than the next smallest unit.
What is a unit of measurement?
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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How do glaciers change the Earth's surface?
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.
What is a Glacier?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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a rock sample will most likely contain ?
how did Bourne believe that an object could be made to rise or sink at will?
Explanation:
When an object is placed inside water, an upward force is exerted by water called as buoyant force.
An object will float or sink, this completely depends on the density of object. Also, if the magnitude of gravitational force is more as compared to the buoyant force the object will sink otherwise float.
If the density of substance is more than water, it will sink and if the density of substance is less than water it will float.
A heavy 2.0Kg ball is moving at 10m/s when it is caught. A light 1.5Kilogram ball is travelling at 20m/s when it caught. Which ball required the greater impulse? a) The 2.0kg ball because it is more massive. b) The 2.0kg ball because it had more momentum c) The 1.5kg ball because it was travelling faster d) The 1.5 kg ball because it is more momentum e) The question can’t be answered without more information.
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:
How did Andersonville play a role in the civil war?
How much have jellyfish populated since 2015?
Describe Bohr's contribution to the atomic model.
How would you measure the volume of a plastic pen? I’m thinking using the water displacement method but I’m not sure. In class we can only use length x widths height and water displacement.
Answer:
The ways you could find the volume of a plastic pen could be:
Archimedes principle Divide the pen into familiar geometric shapes.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:
Volume of a cone = 1/3 * PI * r ^ 2 * h Volume of a cylinder = PI * r ^ 2 * hWhere:
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.
Which of the following is not an intensive physical property?
Electrical conductivity
Mass
Density
Freezing point
Answer:
Below
Explanation:
Electrical conductivity (I believe)
calculate the average velocity of a dancer who moves 5 Meters to the left of the stage over the course of 15 seconds
1. Describe the differences in the ways the sand castle is changed by an ocean wave and by Dylan stomping on it
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 :))
how can the rate of the reaction be increased?
Answer:
The rate of a reaction is the number of moles of reactants converted or products formed per unit time.
Reaction rates can be increased by:
I. Increasing the concentration of solid and liquid reactants.
II. Increasing the pressure of gaseous reactants.
III. Increasing the surface area (area of contact) of the reactants.
IV. Increasing the temperature of the reaction mixture.
V. Increasing the intensity of light for light-sensitive reactions.
VI. Adding a suitable reaction catalyst. This will help lower the activation energy of the reaction, making it to occur faster.
The specific heat capacity of aluminum is 0.22 cal/g°C. How much energy needs to flow into 20.0 grams of aluminum to change its temperature by 15°C?
0.017 cal
0.29 cal
66 cal
1363 cal
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 huge, jagged rock sits atop a windy cliffside. Over a period of many years, how will the rock MOST LIKELY change?
A) It will become larger and smoother.
B) It will become smaller and smoother.
C) It will become bigger and less smooth.
D) It will become smaller and less smooth.
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).
Which of these uses the principle of superposition of rocks to compare the age of fossils?
A. Carbon half-life
B. Radioactive dating
C. Relative dating
D. Uranium half-life
This U-shaped valley was produced by the action of a
A) river.
B) meteor.
C) glacier.
D) landslide.
This U-shaped valley was produced by the action of a glacier. Hence, option (C) is correct.
What is U-shaped valley?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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A 2,000 g quantity of C-14 is left to undergo radioactive decay. The half-life of C-14 is approximately 5,700 years. After going trough x half-lives, the sample becomes 125 grams. What is x?
Answer:
cc
Explanation:
c
WILL GIVE BRAINLIEST!!!
Check ALL of the options below which show evidence to support the theory of plate tectonics.
A) Composition of rocks found on the moon
B) Sea-floor spreading
C) Horses live in Asia and North America.
D) Analysis of rocks from mountains on separate continents show they are identical.
E) Fossils of the same animals found separated by oceans.
F) Evidence of glaciers in tropical areas.
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:
Sea-floor spreading: This is a process by which new oceanic crust is formed at mid-ocean ridges and contributes to the plate movements.Analysis of rocks from mountains on separate continents show they are identical: This suggests that these landmasses were once connected as part of a single continent before being separated by plate movement.Fossils of the same animals found separated by oceans: This indicates that these animals once lived on a single landmass that has since been divided by tectonic activity.Evidence of glaciers in tropical areas: The presence of glacial deposits in regions that are now tropical suggests that continents have shifted from polar to equatorial areas due to plate tectonics.
Why would a ship find sea beam technology beneficial
Considering that, the ocean can forcefully drive the boat's built-in part off. Many people would support it to give the vote momentum. To be utilized for boats or boards, that is the main reason new dead anchors are located close to the ocean in the first place.
What is a sea beam?Our understanding of the sea floor and just how sea floor surveys are carried out, especially with reference to open water navigation, have been significantly altered of the introduction of deep ocean, multibeam mapping devices as Sea Beam to the oceanographic community.
With the real ability to cover the whole in every with deep water resolution of 100-200 m, these systems offer a more than one hundred-fold increase in survey resolution. As a result, they have not only put a lot of stress on shipboard navigation, but they have also directly made it possible to navigate in previously surveyed areas using very accurate terrain-following techniques.
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Amit flies due east from san Francisco to Washington D. C, a displacement of 5600km. He then fliesfrom Washington D. C to Boston, a displacement of 900 km at an angle of 55.0°east of north. What is amit's total displacement?
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.
Explanation: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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How does a centripetal force cause circular motion
Answer:
It cause the change in the direction of the motion at every instant of time
Explanation:
When an object is revolving around a fixed point with uniform speed then in that case the acceleration of the object tangential to the path must be zero.
which mean the component of acceleration along the speed of the object at all instant of time will zero or not present because it's speed must remains the same
now since the direction of motion is continuously changing here so we can say that the force must acting here in such a way that will cause the change in the direction of the object
So this force must be perpendicular to the velocity at all instant so that the magnitude of velocity will remain the same while the direction of the velocity will continuously changing
So centripetal force will always act along the center of the path of the object
An object is dropped from a 32 m tall building. How fast will it be going when it strikes the ground?
The object will be moving at approximately 25.04 m/s when it strikes the ground.
How to determine the speed at which an object will be moving
To determine the speed at which an object will be moving when it strikes the ground after being dropped from a height, use the equations of motion under constant acceleration.
The acceleration is due to gravity and can be approximated as 9.8 m/s².
The equation that relates the final velocity (v) of the object, the initial velocity (u), the acceleration (a), and the displacement (s) is:
v² = u² + 2as
Given:
Initial velocity (u) is 0 m/s (as the object is dropped).
Acceleration (a) is -9.8 m/s² (negative because it acts in the opposite direction to the object's motion).
Displacement (s) is the height of the building, which is 32 m.
Plug in the values into the equation, we have:
v² = 0² + 2 * (-9.8 m/s²) * 32 m
v² = -2 * 9.8 m/s² * 32 m
v² = -627.2 m²/s²
Take the square root of both sides to solve for v:
v = √(-627.2 m²/s²)
Since we are interested in the magnitude of the velocity, the negative sign is ignored.
v ≈ 25.04 m/s
Therefore, the object will be moving at approximately 25.04 m/s when it strikes the ground.
Name the blood vessels that carry blood from the upper and lower parts of your body
Answer:
superior vena cava and the inferior vena cava
Explanation:
The superior vena cava receives blood from the upper part of the body The inferior vena cava receives blood from the lower part of the body.On a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water at 1.5s later. Ignore air resistance. What is the height of the bridge?
I did it but I don’t know if it’s right
Measuring the average energy of motion of the particles in a substance is the same as measuring the substance's
the answer is temperature
Answer 1-8 please
Thanks
Joshua is about to start a conversation with someone he has a crush on. He's not sure how it will go. Which of the following might Joshua experience? Anger Worry Happiness Sadness
Answer:
worry
Explanation:
Joshua is a young boy who has a crush on a girl. Now as Joshua is about to speak with the girl, he is bit nervous and anxious. So he is worried as he is not quite sure about how the conversation will go with her. This makes him feel worried. He is expecting to be nice with her as she is his crush and wishes everything to go well. But this makes his heart beat to pulse faster so he is worried about the conversation with her.
2. Describe what would happen to both air temperature and soil temperature if cold weather were to pass through the area.
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.
Which statement best describes the difference between a physical change and a chemical change? Question 3 options: A physical change is a change from one state of matter to another; a chemical change results in a new substance formed. A physical change produces a new element, and a chemical change results in a bond breaking between atoms. A chemical change results in a new element being formed, and a physical change results in a new compound being formed. A chemical change does not result in a new substance being formed, whereas a physical change does.
A chemical change results in a new element being formed, and a physical change results in a new compound being formed.