if you come from study island then its all of them
Food, shelter and clothes are basic need of the humans. Animals like tiger hunt the animals in the jungle, some animals leaves on green grass which are abundantly present in the jungle. for shelter they live in the group at suitable place.
What is Animal ?Animals belong to the biological kingdom Animalia and are multicellular, eukaryotic creatures. Animals generally ingest organic matter, breathe oxygen, can reproduce sexually, and form from a hollow ball of cells called a blastula during early development. There are an estimated 7.77 million animal species in existence as of 2022, but only 2.16 million of them have been described, including 1.05 million insects, over 36,000 fish, over 11,700 reptiles, over 11,100 birds, and 6,596 mammals. Animals can be as little as 8.5 micrometres (0.00033 in) or as large as 33.6 metres (110 ft). They construct extensive food webs through their complex interactions with one another and their surroundings. Zoology is the study of animals from a scientific perspective.
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If this atom has a balanced charged, how many protons would you expect to find in this atom?
A) 4
B) 0
C) 6
D) 2
If this atom has a balanced charged, 6 protons will be expected to be present in the atom.
WHAT IS A BALANCED CHARGE?A balanced charge in an atom refers to an even or same amount of the positive and negative subatomic particles in the atom.
This further means that the number of protons (+) and electrons (-) in the atom will be equal for there to be a balanced charge.
Based on the image provided in this question, there are 6 electrons (-) in the atom, hence, 6 protons must be present to have a balanced charge in the atom.
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From a young age, we observe and learn and we incorporate into our own lifestyle the behaviors of people around us.
True
False
Which is an example of a third-class lever?
A. scissors
B. nutcracker
C. fishing pole
A fishing pole is an example of a third-class lever where the force applied by your hand is between the fulcrum at the end of the pole and the load being the line and hook.
Explanation:In the world of physics, third-class levers have the application of force located between the fulcrum and the load. This type of lever is common in daily life and is found in many tools we frequently use. An excellent example of a third-class lever from the options provided in your question is a fishing pole. When you cast the line using a fishing pole, your hand provides the force in the middle of the pole (the lever), with the fulcrum at the end where the pole pivots, and the load being the line and hook that are cast out.
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What causes the mechanical advantage of the inclined plane to be less than that of the lever? 30 points !!!
Levers often have a greater mechanical advantage than inclined planes because they can amplify force more efficiently over shorter distances. Inclined planes reduce the force needed by increasing the distance, but the work done remains the same; friction can additionally reduce the inclined plane's efficiency.
When comparing the mechanical advantage (MA) of simple machines such as the lever and the inclined plane, the reason that the lever often has a greater efficiency than the inclined plane has to do with the amount of work done and the distance over which the force is applied.
An inclined plane increases the distance over which the force must be applied to move an object to the same height, thus reducing the input force needed. However, because that distance is increased, the force must be applied over a longer path, which may result in similar amounts of work being done as lifting the object straight up. The MA of an inclined plane can be calculated using the formula MA=1/sin θ.
The lever, on the other hand, operates based on the distances from the fulcrum to the points of application of the effort and load forces. The ratio of these distances determines the MA. With levers, it is possible to gain a significant MA even over a short distance, allowing more efficient force amplification, usually without the same extent of motion required by an inclined plane.
Furthermore, when comparing the two machines, friction may play a minor role. As the inclined plane involves a greater travel distance, the opportunity for friction to affect the work done is increased, potentially reducing the system's efficiency compared to a lever where the interaction points may be more limited and thus less susceptible to energy loss due to friction.
The time between high and low tide when the current changes direction is called ____.
What is the IMA of the inclined plane shown?
What is the IMA of the lever pictured?
the sloped one is the one with the W
Answer:
3
Explanation:
Nineteenth century English scientist Michael Faraday found that if he moved a magnet through a loop of wire, an electric current flowed in that wire.
What process did Faraday discover?
A. solenoid induction
B. electromagnetic induction
C. magnetic induction
D. electric induction
Answer : Electromagnetic induction
Explanation :
In Nineteenth century English scientist Michael Faraday found that if he moved a magnet through a loop of wire, an electric current flowed in that wire.
He gives the relation ship between the magnetic field and the electric current to produce electromagnetic force (EMF). The EMF is given as :
[tex]\epsilon=-N\dfrac{d\phi}{dt}[/tex]
Where,
N is the number of turns
[tex]\dfrac{d\phi}{dt}[/tex] is the rate of change of magnetic flux
[tex]\phi=B.A[/tex]
B is the magnetic field
A is the area of cross section
So, the correct option is (B) "electromagnetic induction"
Nineteenth-century English scientist Michael Faraday found that if he moved a magnet through a loop of wire, an electric current flowed in that wire. Faraday discovers electromagnetic induction. The correct option is option (B).
Michael Faraday discovered the process of electromagnetic induction. He found that when a magnet moves through a loop of wire, an electric current is induced in the wire.
This phenomenon is the basis of electromagnetic induction, which describes the generation of an electric current or electromotive force (emf) in a conductor when it is exposed to a changing magnetic field.
Faraday's discovery of electromagnetic induction was a crucial development in the field of electromagnetism and laid the foundation for the development of electric generators, and transformers.
Therefore, Faraday discovers electromagnetic induction. The correct option is option (B).
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Salt dissolves more quickly in water when the water molecules are moving very quickly. In which of these water samples would salt dissolve most slowly? water at 15°C water at 50°C water at 75°C water at 98°C
The real answer is:
water at 15°C
Answer:
The answer is Water at 15°C
Explanation:
The acceleration produced by an unbalanced force acting on an object is _____ proportional to the magnitude of the force.
Which of the following types of pollution is NOT linked to coal-burning power plant emissions?
A) acid rain
B) global warming
C) ozone hole
D) smog
The ozone hole is not linked to coal-burning power plant emissions; while acid rain, global warming, and smog are.
Explanation:The type of pollution that is NOT linked to coal-burning power plant emissions is the ozone hole (option C). Acid rain is linked to coal-burning because of the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which can combine with water vapor to form acid rain. Global warming is associated with coal-burning due to the emission of carbon dioxide (CO2), a major greenhouse gas. Smog is a type of air pollution that can be exacerbated by the release of various pollutants from coal-burning, including particulate matter and SO2. However, the depletion of the ozone layer, commonly referred to as the ozone hole, is primarily caused by chlorofluorocarbons (CFCs) and not emissions from coal combustion.
A rocket is launched straight upward with a velocity of 90 m/s. It slows down, reverses direction, and returns to earth. what is the rockets velocity at its highest point above the ground.
a. 0.078 m/s
b. 0 m/s
c. -7.0 m/s
d. 13 m/s
e. -13 m/s
Answer: 0 m/s
The rocket is launched straight upward with a velocity of 90 m/s, At the highest point, the instantaneous velocity would be 0 m/s. The rocket slows down while moving up. The velocity would be 0 m/s at the highest point for an instant and then reverses direction to return on Earth. If it is not controlled, then it would free fall under gravity.
8. A 300g mass hangs at the end of a string. A second-string hang from the bottom of that mass and supports a 900g mass. (a) Find the tension in each string when the masses are accelerating upward at 0.700m/s2 . (b) Find the tension in each string when the masses are accelerating downward at 0.700m/s2 .
A jet fighter flying at 300 m/s (just below the speed of sound) makes a turn of radius 1.85 km. (a) what is its centripetal acceleration in gs?
Imagine that you have a 6.50 l gas tank and a 4.50 l gas tank. you need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. if you fill the larger tank with oxygen to a pressure of 155 atm , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? assume ideal behavior for all gases. express your answer with the appropriate units.
Given the scenario and assuming ideal gas behavior, to ensure both gases run out at the same time, you should fill the acetylene tank to a pressure of approximately 224 atm.
Explanation:For gases behaving ideally, the pressure, volume, and temperature are related by the Ideal Gas Law (PV = nRT). However, in this problem, we assume temperature and gas constant are the same for both gases. Hence, the amount of gas (in moles) is directly proportional to the product of pressure and volume (PV).
Now you want to calculate the pressure in the acetylene tank that ensures both gases run out at the same time. Since both gas tanks will be opened for the same timeframe, the amounts of each gas in moles used will be the same. Hence, the products of pressure and volume will also be equal for both tanks (PV of oxygen tank = PV of acetylene tank).
In other words, (Pressure of oxygen) x (Volume of oxygen) = (Pressure of acetylene) x (Volume of acetylene). By inserting given values for oxygen (Pressure = 155 atm, Volume = 6.50 L) and the volume of acetylene (4.50 L), you can solve for the pressure in the acetylene tank.
From this equation, Pressure of acetylene = (Pressure of oxygen) x (Volume of oxygen) / (Volume of acetylene) = 155 atm x 6.50 L / 4.50 L = 223.88 atm.
Therefore, to ensure you run out of both gases at the same time, you should fill the acetylene tank to a pressure of approximately 224 atm.
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What has more inertia: a full water bottle sitting on a desk, or a football player running with the ball?
Final answer:
A football player has much more inertia than a full water bottle because inertia is directly related to an object's mass, and the player's mass is significantly greater than that of the water bottle. This greater mass results in the player's motion being minimally affected when catching the football, illustrating the player's higher level of inertia.
Explanation:
The question of which has more inertia, a full water bottle sitting on a desk or a football player running with the ball, centers around the concept of mass as the quantifiable measure of an object's inertia. Inertia, by definition, is the resistance of any physical object to any change in its state of motion, including changes to its speed and direction. An object with more mass has more inertia since it requires more force to change its motion.
Through this lens, the football player has much greater mass compared to a water bottle, hence significantly more inertia. Despite the football having a higher velocity when thrown, the player's mass makes his momentum and inertia far greater. This concept is illustrated when considering the effect on motion during the act of catching: the player's motion is only slightly affected because his greater mass (and thus inertia) absorbs the change with minimal alteration in speed or direction.
This observation aligns with the fundamental principles of momentum which state that momentum (mass times velocity) of an object is directly related to both its mass and velocity. However, in the context of inertia, it is the mass component that is most influential in determining the effect of external forces on an object's motion.
a ferris wheel takes 5 minutes to complete one full rotation, what is the angular velocity of the ferris wheel
Answer:
0.021 rad/s
Explanation:
t = 5 minutes = 5 x 60 = 300 seconds
Time taken to complete one complete round is called time period.
Let the angular velocity is ω.
The relation between angular velocity and the time period is given by
ω = 2 π / T
ω = ( 2 x 3.14 ) / 300 = 0.021 rad/s
Among the largest passenger ships currently in use, the Norway has been in service the longest. The Norway is more than 300 m long, has a mass of 6.9x10^7 kg, and can reach a top cruising speed of 9 m/s. Calculate the magnitude of the ships momentum
Answer:
6.9x10^7
Explanation:
A small 21 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?
answer =
units =
As per this question the mass of canoe is given as 21 kg.
The canoe is floating downriver with a speed of 4 m/s.
We are asked to calculate the kinetic energy of the canoe.
The kinetic energy is the energy due to the motion of the body.
If a body has mass m and it moves with a velocity v ,then its kinetic energy is defined as
[tex]kinetic\ energy [K.E]=\frac{1}{2} mv^{2}[/tex]
we are given v= 4 m/s and m= 21 kg
Hence kinetic energy of canoe [tex]K.E= \frac{1}{2} *21 kg [4 m/s]^{2}[/tex]
=168 Joule.
Hence the kinetic energy of the particle is 168 Joule.
Here Joule is the unit of energy
When aluminum-27 is bombarded with a neutron, a gamma ray is emitted. what radioactive isotope is produced?
Answer:
Go to the excited aluminum-28 isotope
Explanation:
In the processes of nuclear reactions, fundamental changes occur at the level of the atomic nucleus.
Analyze the characteristics of the neutron that has approximately the mass of the proton and has no electric charge, so when being absorbed by the aluminum core the atomic number should not be changed, but the atomic mass should increase by one unit.
The new atom formed is in an excited state and enters the base state with the emission of a high-energy radiation, gamma ray that does not transform the atom
Tthe reaction is:
⁷A₂₇ + ⁰n₁ → ⁷Al₂₈ˣ
The symbol "ˣ" means excited
⁷Al₂₈ˣ → ⁷Al₂₈ + γ
Meredith takes a glass of water outside on a hot summer day and leaves it there for several hours. When she returns, part of the water has evaporated and there is less water in the glass. What kind of state change did some of the water go through to make it disappear?
A. It changed from a solid to a gas.
B. It changed from a gas to a liquid.
C. It changed from a liquid to a solid.
D. It changed from a liquid to a gas.
Answer:
D. It changed from a liquid to a gas.
Explanation:
The water in the glass experiences a phenomenon called Evaporation, resulting from the heat of the atmosphere (as it is a hot summer day). The surface layer of the water in the glass will experience a change in state from liquid to gas and the layer beneath it will follow until a noticeable decrease in the water height in glass is present. This state change makes some of the water 'disappear'
the speed of light in a piece of plastic is 2.00x10^8 meters per second what is the absolute index of refraction of this plastic
The james webb space telescope is designed primarily to observe __________.
The James Webb Space Telescope is primarily designed to observe infrared radiation, allowing astronomers to view distant galaxies and the earliest stars after the Big Bang. It's equipped with a 6.5-meter diameter mirror and is currently in a stable orbit point around 1.5 million kilometers from Earth.
Explanation:The James Webb Space Telescope (JWST) is designed primarily to observe infrared radiation from the cosmos. This incredible space telescope was launched in December 2021 and is equipped with a mirror measuring 6.5 meters (21 feet) in diameter, composed of 36 small hexagons, similar to the Keck telescopes. It's named after James Webb, an early NASA administrator.
This telescope will allow scientists to peer farther out in space and back in time than ever before since it's designed to detect far-infrared and millimeter-wave radiation from distant galaxies, whose light has been shifted to long wavelengths because of the vast distances it hastraveledd to reach us. One of the major goals of the JWST is to observe the light of the first galaxies and stars that came into existence after the Big Bang, approximately half a billion years later.
Observing these wavelengths is crucial as it allows us to gather data that are hidden from visibility due to dust clouds surrounding these galaxies. The JWST is expected to expand our understanding of the universe by providing an unrivaled view of the cosmos.
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Objects in space __________. question 12 options: require energy to move because they have mass do not require energy to move because there is no gravity stop on their own move on their own
If 9.5 waves break on a beach in 1.0 minute what is the frequency answer
THIS IS SIMPLE BUT I WANT A FOR SURE ANSWER :)
The ocean floor is at a lower elevation than the continents. Which of the following pieces of evidence best supports this claim?
A.Tectonic plates located below the continental crust do not move
B.Gravitational force is stronger beneath the continental crust.
C.Oceanic crust is thinner and denser than continental crust.
D.Continental crust and oceanic crust are stacked in alternating layers.
Answer:
C. Oceanic plate is thinner and denser than continental plate.
Explanation:
Oceanic plate is also called SIMA because it is made up of silicon and magnesium whereas continental plate is called SIAL because it is made up of silicon and aluminium. Oceanic plate and continental plate both are less dense that mantle but oceanic plate is denser than continental plate. Oceanic plate is made up of basaltic rocks and continental plate is made up of granitic rocks.
What is a wavelength of sound wave moving at 340m/s with frequency of 256hz
Ramon is playing soccer. The ball comes straight at him, and he kicks it to a player on his right. His kick is an example of
Answer: d is the answer please give me vote and thanks
Explanation:
Help ASAP!
Question: Any object with mass has gravity.
Answer: Never true, sometimes true, OR always true
7.
Which is the best example of a hypothesis?
Water changes into steam if it is boiled.
If water is boiled, it will turn into steam.
If the temperature of water is increased, then it will change into steam.
When the temperature of water is increased, it changes into steam.
Answer:
C. If the temperature of water is increased, then it will change into steam is stating a hypothesis.
Explanation:
Which statements best describe science? Check all that apply. A)Science uses beliefs and opinions to construct explanations. B)Science is resistant to new information. Science is supported by facts and processes. C)Science involves observation and experimentation. D)Science continually changes and is constantly updated.
Answer:
Science is supported by facts and processes.
Science involves observation and experimentation.
Science continually changes and is constantly updated.
Options A, C, and D are statements best describe science. Another approach to defining science is that it is the information gained through experience.
What is science?Science is knowledge about the physical world and the things that occur within it. It is an objective observation that explains nature's fundamental rules.
The statements best describe science will be;
A)Science is supported by facts and processes.
C) Science involves observation and experimentation.
D) Science continually changes and is constantly updated.
Hence options A, C, and D are statements best describe science.
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