Measuring the average energy of motion of the particles in a substance is the same as measuring the substance's
the answer is temperature
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.
Which is the largest and the main artery of the circulatory system
Pulmonary The main artery of the human circulatory system is called the aorta. It comes directly off of the heart, carrying oxygenated blood to other arteries that carry it to… the body's cells. About the thickness of your thumb, it is also the largest artery.
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besides mass , another factor that affects force
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
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.
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
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 :))
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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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.
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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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
How much have jellyfish populated since 2015?
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
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:
list two food chains in the food web.
How did Andersonville play a role in the civil war?
Is it possible for you to take a hike and have the distance you cover be equal to the magnitude of your displacement?
Distance can be equal to displacement ... if the motion is all in a straight line ... but distance can never be greater than displacement.
Yes, it is possible that the distance can be equal to the displacement. a further explanation is given below.
A intervals metric that is taken somewhere across a track could be determined as the Distance, and the measurement of just a specific duration or short timeframe could be considered as a Displacement.Whenever you walk down the road throughout the one manner, the distance, as well as the size of the whole movement, become equivalent or comparable.
Thus the above answer is right.
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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.
Answer 1-8 please
Thanks
Describe Bohr's contribution to the atomic model.
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).
a plane travels 2.5 km at an angle of 35 degrees to the ground and then changes Direction and travels 5.2 km and an angle of 22 degrees to the ground what is the magnitude and direction of the Plains total displacement
We can solve for the resultant x and y components by using the sine and cosine functions.
resultant x = 2.5 cos 35 + 5.2 cos 22 = 6.87 km
resultant y = 2.5 sin 35 + 5.2 sin 22 = 3.38 km
The resultant displacement is calculated using hypotenuse equation:
displacement = sqrt (6.87^2 + 3.38^2)
displacement = 7.66 km
The resultant angle is:
θ = tan^-1 (3.38 / 6.87)
θ = 26.20°
Therefore the magnitude and direction is:
7.66 km, 26.20° to the ground
Which of the following is not an intensive physical property?
Electrical conductivity
Mass
Density
Freezing point
Answer:
Below
Explanation:
Electrical conductivity (I believe)
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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.
A testable idea or explanation that leads to a scientific investigation is called a what
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.
calculate the average velocity of a dancer who moves 5 Meters to the left of the stage over the course of 15 seconds
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.
suppose a ball has a potential energy of 5 J when you dropped it. What would be its kinetic energy just as it hit the ground?
Answer:
10 J
Explanation: