All electrons have energy stored in them which is potential energy.
Pressure increases the electron's kinetic energy causing it to move faster and eventually jump to a wider orbit. Each electron then stores energy, which becomes potential energy. Kinetic energy can be converted into other forms of energy and vice versa. For example, kinetic energy is converted into electrical energy by a generator or into thermal energy by a car's brakes.
Energy is not destroyed or lost in the transition from potential energy to kinetic energy. It just converts from one type of energy to another type of energy. This is known as the law of conservation of energy. When a person rides a bicycle to the top of a hill, the kinetic energy of movement is converted into potential energy and stored in the bicycle at the top of the hill. The potential energy stored in the bike at the top of the hill can be used to roll the bike down the hill.
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the car drives 17.9 m / s East. It accelerates at 2.88 m / S2 at a 137.7 angle. How long did it take him to the car is driving directly north
It will take time of 8.52 seconds for the car to drive directly north.
What is the first equation of motion?The first equation of motion can be derived from the velocity time graph to establish the relationship between the initial velocity (u), final velocity (v), acceleration (a) of the object, and time (t) taken by the object.
The mathematical equation for the first equation of motion can be written as:
v = u + at
Given, the angle of acceleration, θ = 137.7°
The equation becomes : v = u + acosθ(t)
v = 17.9 + (2.88) cos(137.7) × t
v = 17.9 - 2.1 ×t
When the car reaches north, the final velocity of the car, v = 0
0 = 17.9 - (2.1) × t
2.1 ×t = 17.9
t = 8.52 sec
Therefore, the time of 8.52 seconds for the car to drive directly north.
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Answer:
8.40 seconds
Explanation:
You want the amount of time it takes for an initial velocity of 17.9 m/s East combined with an acceleration of 2.88 m/s² in a direction 137.7° CCW from East to result in a velocity that is due north.
TimeThe velocity as a function of time will be the sum of the initial velocity and the product of acceleration and time.
v = v₀ +a·t
v = (17.9, 0) + 2.88·(cos(137.7°), sin(137.7°))t
v = (17.9 +2.88·cos(137.7°)t, 2.88·sin(137.7°)t
In order for the x-component of this velocity to be zero, we must have ...
17.9 +2.88·cos(137.7°)t = 0
t = -17.9/(2.88·cos(137.7°)) ≈ 8.40 . . . . . seconds
The first attachment shows the geometry of the velocity. The short arrow is the acceleration vector. The change in velocity is the initial velocity (horizontal vector) plus a multiple of the acceleration vector. The red resultant vector is the desired northbound velocity. The car must accelerate for 8.40 seconds to achieve that velocity.
__
Additional comment
The second attachment shows the calculator screen with the necessary calculation.
What is the IMA of the inclined plane.
Answer:
Explanation:
12
how much total work has been done on the block after it slides down along the ramp a distance of 1.93 m ? total work done on the block: j nancy measures the speed of the wooden block after it has gone the 1.93 m down the ramp. predict what speed she should measure. final speed after sliding from rest: m/s now, steven again places the wooden block back at the top of the ramp, but this time he jokingly gives the block a big push before it slides down the ramp. if the block's initial speed is 2.00 m/s and the block again slides down the ramp 1.93 m , what should nancy measure for the speed of the block this time? final speed after sliding with initial speed 2.00 m/s :
(a) 26.55 joule is the total work done on the block after it slides down along the ramp.
[tex][W=F x\cdotd],[=mg sin \theta x\cdot d],[=1.65 x\cdot9.8 x\cdot sin 58.3^0x\cdot1.93],[W=26.55J][/tex]
(b) According to equations of motion
[tex][v_f^2=v_i^2+2ad],[a=g sin \theta],[v_f^2=2g sin \theta d],[v_f=\sqrt(2g sin \theta d)],[v_f=5.67m/s][/tex]
(c) now the block has some initial velocity
[tex][v_f=\sqrt(v_i^2+2g sin \theta d][v_f=6.01m/s][/tex]
The displacement of a body mass and the force that creates the displacement are considered the dot product of a force's output. Despite the fact that there are several ways to define it, work is a scalar number.When a body is moving along a straight path, its "rate of change in displacement in respect to time" is measured as linear velocity.To know more about work done visit : https://brainly.com/question/16976412
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Can someone pls help me with this????
1. The Earth only has climate change because of human activity.
True
False
2. The Earth is currently experiencing _____.
An Ice Age
A Carbon Cycle Age
A Thermal Phase Change
An Interglacial Age
3. TRICKY QUESTION: What in one thing that scientists DO NOT use to study climate change? Choose only ONE Answer.
Number of Living trees
Pollen in bogs/lakes
Tree Rings
Ice core samples
4. Why were the humans able to develop agriculture at the beginning of the Holocene Period?
Woolly mammoth herds left behind large numbers of animal droppings for fertilizer.
The ice from the previous ice age melted and the climate was warmer.
Cave Men developed metal working technology that helped them make plows.
Holocene period men were able to select cold loving plants as crops.
5. TRICKY QUESTION: Humans impact the environment and the climate on the Earth. There are daily activities that you do that can affect coral reefs in oceans far away. What should you NOT DO where you live to help protect them?
Use less energy.
Plant trees/forest.
Use more water.
1. The Earth only has climate change because of human activity.
False
A power shovel did 24000j of work, exerting force of 4000n. how high did the shovel lift the load?
The height at which the power shovel lifted the load is 6 meters.
What is the height of the load?Work done is simply defined as the energy transfer that takes place when an object is either pushed or pulled over a certain distance by an external force. It is expressed as;
Work done = force × distance
Given the data in the question;
Force = 4000N = 4000kgm/s²Work done = 24000J = 24000kgm²/s²Height h = ?Plug the given values into the above formula and solve for the height.
Work done = force × distance
24000kgm²/s² = 4000kgm/s² × h
h = 24000kgm²/s² ÷ 4000kgm/s²
h = 6m
Therefore, the value of the height is 6 meters.
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we now know that the orbit of a stable planet around a star like the sun is always in the shape of:
Answer:
The shape is that of an ellipse with the center of rotation of the planet at one focus of the ellipse.
The Earth about the Sun is very nearly circular (around 91-93 million miles) and the eccentricity of the ellipse is very small.
The form was of an ellipse, with the planet's center of rotation at one of its loci. The eccentricity of the ellipse that the Earth forms around the Sun are incredibly small (between 91 and 93 million miles).
What is a Planet?A huge, spherical celestial object that is neither a star it nor remnant is called a planet. The nebular hypothesis, which holds how an interstellar cloud collapses out of a nebula to produce a young protoplanetary disc encircled by a planetary system, is the best theory currently available for explaining planet formation.
The slow accumulation of matter propelled by gravity—a process known as accretion—leads to the formation of planets in this disk. The rocky planets Mercury, Venus, Earth, and Mars, as well as the gigantic planets Jupiter, Saturn, Uranus, and Neptune, make up the Solar System's required amount of eight planets.
Each of these planets revolves around an axis that is inclined with regard to its orbit pole.
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What 2 zones does the energy have to travel through once it leaves the core?
The core is where energy is created by nuclear fusion at extremely high temperatures. The convective zone encloses the radiative zone, which is encircled by the core.
The Sun and other stars are powered by nuclear fusion reactions. A heavier nucleus is created when two light nuclei fuse together in a fusion reaction. Because the mass of the resulting single nucleus is smaller than the combined mass of the two initial nuclei, the process produces energy. Remaining mass is converted to energy.A layer of a star's interior known as a radiation zone, or radiative area, is where energy is largely transferred toward the outside through radiative diffusion and thermal conduction rather than through convection. Electromagnetic radiation, or photons, carry energy through the radiation zone.The pressure inside the core, which is thought to be 265 billion bar (3.84 trillion psi or 26.5 pet pascals(PPa )), is made up of hot, dense plasma (ions and electrons). Fusion causes the solar plasma's mass proportion of hydrogen to decrease from 68–70% at the outer core to 34% at the core/Sun Centre.To know more about nuclear fusion
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Dizzy is speeding along at 27.9 m/s as she approaches the level section of track near the loading dock of the Whizzer roller coaster ride.A braking system abruptly brings the 339-kg car (rider mass included) to a speed of 3.25 m/s over a distance of 5.19 meters. Determine the magnitude of the braking force (in newtons) applied to Dizzy's car.Answer: ____________ N (round to the nearest whole number)
The magnitude of the braking force is given by:
[tex]f=ma=m\frac{{v_f}^2-v_0^2}{2d}[/tex]Replace the values of m=339kg, v_f=3.25m/s, v_0=27.9m/s and d=5.19m to find the magnitude of the braking force:
[tex]f=(339kg)\times\frac{(3.25\frac{m}{s})^2-(27.9\frac{m}{s})^2}{2(5.19m)}=-25,077.1...N[/tex]The minus sign accounts for the fact that the car is decelerating.
Therefore, the magnitude of the braking force is approximately 25,077N.
Which statement correctly defines pasteurization?
Pasteurization is the process by which broth is used to grow thousands of bacteria.
Pasteurization is the process by which liquids are cooled to a very low temperature.
Pasteurization is the process by which broth is added to soups and other foods.
Pasteurization is the process by which liquids are heated to kill bacteria that may be present.
A painter accidentally drops a can of paint from a bridge over a river. The can acceleration at 9.81 ms-2 for a time of 2.3 s before it hits the water below.
a. Calculate the velocity of the can just before it hits the water.
b. What is the height of the bridge?
using the laws of motion
(a) By equation of motion, the velocity of the can just before it hits the water is 22.563 m/s.
(b) The height of the bridge is 25.95 meters.
Accidentally, a painter drops a paint can from a bridge over a river.
For a time t = 2.3 seconds the acceleration is 9.81 m/s².
Initially, the paint can was on rest.
So, the initial velocity is u = 0 m/s.
Using the equation of motion,
v = u + at
Substituting the values,
v = 0 + 9.81 × 2.3
v = 22.563 m/s
(b) Using the second equation of motion,
The height of the bridge is:
s = ut + ( 1/2 )at²
s = 0 × 2.3 + ( 1/2 ) × 9.81 × ( 2.3 )²
s = ( 1/2 ) × 9.81 × 2.3 × 2.3
s = 51.8949 / 2
s = 25.95 m
The final velocity of the can is 22.56 m/s and the height of the bridge is 25.95 meters.
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the possible ways used to remove a truck that is stuck in mud
Straight wheels while slowly depressing the gas pedal. Then, whether in drive or reverse, rock the automobile back and forth. If the wheels begin to spin, stop and turn around. If your transmission has a winter mode, use it.
What is meant by angular acceleration?The rate of change in angular velocity over time is represented by angular acceleration.
How swiftly something is accelerating or decelerating is another method to consider this. acceleration () is equal to t/. Rads/s² or degrees/s² are the units.
To maintain straight wheels while slowly depressing the gas pedal. Then, whether in drive or reverse, rock the automobile back and forth. If the wheels begin to spin, stop and turn around. If your transmission has a winter mode, use it.
Use the weight of the car to gain some traction while applying gentle pressure to the accelerator and moving as slowly as you can.
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if an amplifier needs a low input resistance and a low output resistance, then it is a transresistance amplifier.
a. True
b. False
Yes, the given statement is true. If an amplifier needs a low input resistance and a low output resistance, then it is a trans-resistance amplifier.
What is a trans-resistance amplifier?
In electronics, a trans-resistance amplifier amplifies the input current into an output voltage.
In general, it is also termed as voltage - current converter or V-I converter.
The name trans-resistance is derived from the fact that its working efficiency is measured into resistance units.
To put it simply, trans-resistance measures the ratio between the output voltage and input current.
These are used to process the current in photodiodes, accelerometers, and a variety of sensors.
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__________ is a rare disorder that includes the inability to feel pain. a. somatoform pain disorder b. congenital analgesia c. kinesthesis d. anesthesia
Answer:
B.Congenital analgesia
Explanation:
A first piece of rock which weighs 5N. Force F is applied to this first piece of rock and it produces an acceleration of a. Now if there is a second piece of rock. What force needs to be applied to the second piece of rock to produce an acceleration of 8a. Mass of both pieces of rock is same.
Answer:
Explanation:
he force will depend on the masses of the rocks.
The formula you weren’t paying attention to in your Physics lesson was one of the more basic ones:
F = ma
F is the force. m is the mass of the object, and a is the acceleration. That’s all you should need.
Unfortunately, your question gave the weight of the rocks, not their masses. So, it can’t be answered without more information - eg is the rock on Earth, or on the moon, Mars or a planet orbiting Alpha Centauri?
If the rock is located on Earth, then you can use the same formula as above, because we know that a = g = 9.8m/s/s. and F is the weight. So, we know F, a and can work out m using a bit of basic algebra.
The other problem is that we don’t know the mass of the second piece of rock, because we haven’t been told either the weight or mass of that piece of rock.
If your homework question didn’t specify that, you can either refuse to answer it saying that not enough information was given, or STATE in your answer that you are assuming that the second piece of rock is the same mass as the first one.
If you decide to do that, then a minute’s work should give you the answer you’re looking for.
A quarterback throws the football to a sta-
tionary receiver who is 28.4 m down the field.
The football is thrown at an initial angle of
38.6° to the ground.
The acceleration of gravity is 9.81 m/s².
a) At what initial speed must the quarter-
back throw the ball for it to reach the receiver?
Answer in units of m/s.
The following questions about football movement can be answered using the projectile launch equations:
Initial speed is: v = 16.89 m / s
Maximum height is: y = 14.26m
Given parameters
Horizontal distance x = 28.4 m
Launch angle tea = 38.6º
To find,
The initial speed and maximum height
Kinematics is used in projectile launch, where the acceleration caused by gravity is measured on the y-axis and absent on the x-axis.
The range, as shown in the attachment, is the distance covered at the same departure height.
R = [tex]v^{2}[/tex]sin2θ/g
[tex]v^{2}[/tex]= g*r/sin2θ
calculating,
v² = 9.8 *28.4 / sin (2 *38.6)
=[tex]\sqrt{278.32/0.9751}[/tex]
v = 16.89 m / s
The vertical speed is zero at the height maximum.
v² = v² - 2 g y
0 = v² - 2g y
y = v²/2g
y = 14.26m
In conclusion, the answers to the queries about the movement of the football may be found using the projectile launch equations:
Initial speed is: v = 16.89 m / s
Maximum height is: y = 14.26m
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I WILL GIVE BRAINLIEST
On Earth, a crate has a mass of 60 kg and a weight of 588 N. If the crate is taken to different planets, it will have a different weight on each planet. The table below shows the weight of the crate on the other planets in the solar system. Based on the data in the table, decide if the planet has a higher or lower mass than Earth. Drag and drop a label into the table to indicate how each of the planets compare in mass to Earth.
Each label may be used more than once.
Just say if it is more or less
Planet Weight of Crate (N) Mass of Planet Compared to Earth
Mercury 223
Venus 529
Mars 223
Jupiter 1,488
Saturn 630 Response area
Uranus 810
Neptune 702
Based on the weights of the crate on the different planets, the mass of the given planets compared to the earth are as follows:
Mercury - lower mass than EarthVenus - lower mass than EarthMars - lower mass than EarthJupiter - higher mass than EarthSaturn - higher mass than EarthUranus - higher mass than EarthNeptune - higher mass than EarthWhat does the weight of an object depend on?The weight of an object depends on the mass of the object as well as a constant known as acceleration due to gravity, g.
For an object of constant mass, its weight depends only on the acceleration due to gravity on the object.
The higher the mass of an object, the greater will be its value of acceleration due to gravity.
Hence, for planets in which the weight of the object is less than on earth, the planets will have a lower mass than earth. On the other hand, for planets in which the weight of the object is more than on earth, the planets will have a higher mass than earth.
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9. Katsumi mentions using satellite data to complement his models. How do you think this information could improve his models?
Answer:
He could use this data more accurately sculpt models.
Explanation:
If you had a rough image of something like a search of the earth that you found online, you would not know to see some of the features the planet has, but if you have access to satellite imagery, you will see many small details within the surface of the earth.
Which of the following does not describe Physics?
A. It is an exact science that should never be questioned.
B. It uses math to give precise answers.
C. None of the above.
D. It uses the scientific method
Jupiter has enough mass to make 318 earths. In contrast, uranus and neptune have only enough mass to make.
Uranus and Neptune have only enough mass to make Option c. 15 piles of earth
Jupiter is the fifth planet from the sun and the largest within the sun gadget. it is a fuel massive with a mass greater than two and a half of instances that of all of the other planets inside the solar machine combined, but barely much less than one-thousandth the mass of the solar.
Uranus is the 7th planet from the sun. Its call is a connection with the Greek god of the sky, Uranus, who, according to Greek mythology, became the exquisite grandfather of Ares, grandfather of Zeus, and father of Cronus. It has the 1/3-largest planetary radius and the fourth-largest planetary mass within the sun machine.
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Disclaimer:- your question is incomplete, please see below for the complete question.
Jupiter has enough mass to make 318 earths. In contrast, uranus and Neptune have only enough mass to make.
a. 100 Earths
b. 70 Earths
c. 15 Earths
d. 2 Earths
e. you can't fool me, Uranus and Neptune have a lot of ice, and so have much more mass than Jupiter
which of the following best describes the composition of an atom
Answer: its the third one
a nucleus of positive and neutral particles surrounded by negative particles.
in which the neutral particles are neutrons, the positive ones are protons and the negative ones are electrons.
hope it helps, I'd appreciate a brainliest :D
A ball is thrown down from the edge of a cliff on the moon (g = 1.6 m/s2, down) with a speed of 10 m/s. If the cliff is 150 m tall, how long does it take the ball to hit the lunar surface?
The time taken by the ball to hit the lunar surface is 13.7 seconds.
What is free fall?Free fall is the motion of a body that is allowed to fall freely under the influence of gravity alone.
Free-falling objects are given zero velocity initially, but once they start falling, they are accelerated by a factor known as acceleration due to gravity, g.
The acceleration due to gravity is a constant on the earth but varies from one planetary body to another.
The acceleration due to gravity on the earth's surface has a value of 9.81 m/s².
The acceleration due to gravity in the moon, g = 1.6 m/s².
Calculating the time taken for the ball to hit the lunar surface:
time taken, t = √(2 * h / g)
h = 150 m
t = √(2 * 150 / 1.6)
t = √(300 / 1.6)
t = 13.7 seconds.
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Velocity time graph question. What is the position of the dog at t = 3 s, what is the velocity of the dog for interval A. and what is the average velocity of the dog over intervals A and B?
Given:
The position and the time graph of a dog is shown in the figure given in the question.
To find:
the position of the dog at t=3 s, velocity of the dog for interval A, and the average velocity of the dog over intervals A and B.
Explanation:
The position of the dog at t=3 s, is,
[tex]y=8\text{ m \lparen from graph\rparen}[/tex]The final position after interval A is,
[tex]8\text{ m}[/tex]The initial position before the interval A is,
[tex]5\text{ m}[/tex]The velocity for the interval A is,
[tex]\begin{gathered} \frac{The\text{ displacement}}{The\text{ time interval}} \\ =\frac{8-5}{2-0} \\ =\frac{3}{2} \\ =1.5\text{ m/s} \end{gathered}[/tex]The change in position at interval B is 0, so the velocity at interval B is 0.
The average velocity over the interval A and B is,
[tex]\begin{gathered} \frac{The\text{ velocity at interval A+The velocity at interval B}}{2} \\ =\frac{(1.5)+\text{0}}{2} \\ =\frac{1.5}{2} \\ =0.75\text{ m/s} \end{gathered}[/tex]Hence, the position of the particle after the required time is 8 m, The velocity after interval A is 1.5 m/s, and the average velocity over the interval A and B is 0.75 m/s.
The position of the dog at time 't' is 3 meters, the velocity of the dog at interval A is 1.5 meters per second and the average velocity of the dog is 0.75 meters per second.
The velocity time graph of the dog at time ' t' is given to us.
We need to find,
The position at time t = 3 second,
The velocity of the dog at interval A, and
The average velocity of the dog over intervals A and B.
According to the given in the graph,
The position of the dog at time 't' = 3 seconds is 8 meters.
The position of dog at interval A = 5 meter and the position of the dog at interval B = 8 meters.
Therefore, the position of the dog from the graph in these intervals is
8-5 = 3meters.
and time = 2-0 = 2 seconds.
Therefore, the velocity = 3/2 = 1.5 meter per second.
The average between the intervals A and B is,
1.5 + 0/ 2 = 1.5/ 2
= 0.75 meter per seconds.
Therefore, the position is the dog at time 't' is 3 meters, the velocity of the dog at interval A is 1.5 meters per second and the average velocity of the dog is 0.75 meters per second.
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the heat capacity at constant volume is 30 j/k. the energy change upon heating the system from 200 k to 350 k, at constant volume, is (in kj):
If the heat capacity at constant volume is 30 J / k. the energy change upon heating the system from 200 k to 350 k would be 450 Joules.
What is thermal energy?It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
As given in the problem we have to calculate the energy change upon heating the system from 200 k to 350 k, if the heat capacity at constant volume is 30 j/k.
The energy change upon the heating = 30 × (350 -200)
= 450 Joules
Thus, the energy change upon heating the system from 200 k to 350 k would be 450 Joules.
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A shopper in a supermarket takes a box of sugar from a shelf that is 1.5 m high because he is going to bake some muffins. He also needs to get some blueberries. The sugar has a weight of 5N. What Potential Energy did the sugar have before it was taken from the shelf?Potential Energy = Weight x HeightWeight = Potential Energy / HeightHeight = Potential Energy / WeightWeight = Mass x 10Mass = Weight / 10
In order to calculate the potential energy of an object, we can use the formula below:
[tex]PE=m\cdot g\cdot h[/tex]Where PE is the potential energy (in Joules), m is the mass (in kg), g is the gravity acceleration (in m/s²) and h is the height (in meters).
Since mass times gravity is equal to the weight force, we can also write the formula as follows:
[tex]W=m\cdot g[/tex]Where W is the weight force (in Newtons).
So the formula will be:
[tex]PE=W\cdot h[/tex]Potential Energy = Weight x Height
Since the height is equal to 1.5 meters and the weight force is equal to 5 N, we have:
[tex]\begin{gathered} PE=5\cdot1.5 \\ PE=7.5\text{ J} \end{gathered}[/tex]The potential energy is 7.5 Joules.
you do not see eclipses every month because
Due to the Moon's orbit being five degrees off-center from Earth's orbit around the Sun, lunar eclipses don't happen every month and the Moon typically passes above or below the shadow.
Paul Doherty, a senior scientist at the Exploratorium, explains why this isn't the case: because the moon's orbit is skewed in relation to Earth's path around the sun, it frequently passes below or above Earth. A solar eclipse is not produced at those times because it does not cross the dividing line between the sun and the Earth.
Eclipses of the sun and the moon happen equally frequently. Because Earth's shadow on the Moon during a lunar eclipse is significantly greater than the shadow the Moon casts on Earth during a solar eclipse, lunar eclipses are more widely seen. As a result, a lunar eclipse is more likely to be seen than a solar eclipse.
A entire or partial occlusion of one celestial body by another along an observer's line of sight results in an eclipse. When the Moon moves in front of the Sun, either completely or partially obstructing its disc, a solar eclipse takes place.
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Which personality trait allow you to admit your mistakes and accept feedback from others?
Humility is the trait that allows you to accept feedback from others and admit your mistakes.
What is Humility?Humility is the quality of being humble or having low self-regard and a sense of unworthiness. Humility can mean a recognition of self in relation to a deity or deity as a member of that religion.
Humility can be defined as being "unselved", a form of temperance that is neither having pride nor pampering in self-deprecation and liberation from the consciousness of self. The humble nature is when you let someone go in front of the person in line if you notice that person is rushing.
Humility provides one to be willing to assume the possibility of doing a mistake. Humility is essential to exercise moral leadership. A lack of humility makes it difficult for someone to recognize the potential for mistakes in their decisions or work.
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when i move a conductor through a magnetic field, the change in magnetic field creates a net change in magnetic flux. the emf that is induced by this changing flux creates tiny motional currents that are called
The emf that is induced by this changing flux creates tiny motional currents that are called eddy currents.
According to Faraday's law of induction, eddy currents—also known as Foucault's currents—are loops of electrical current that are produced within conductors by a changing magnetic field within the conductor or by the relative motion of a conductor in a magnetic field.
In conductors, eddy currents move in closed loops in directions opposite to the magnetic field. A time-varying magnetic field generated by an AC electromagnet or transformer, for instance, or by the relative motion of a magnet and a nearby conductor, might induce them within neighboring stationary conductors.
The size of the current in a particular loop is inversely related to the resistivity of the material and directly related to the magnetic field strength, loop area, and flux change rate.
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7. Why do you think the Redfield ratio continues to be used in oceanographic models, given it is known to be an over-simplification?
The Redfield ratio is the ratio of various chemical elements present in the average phytoplankton biomass. This defines the stoichiometry of photosynthesis and remineralization reactions.
The Redfield ratio is 106:16:1 across the ocean. Many models predict that a warmer ocean will hold less carbon because phytoplankton will become smaller as the ocean warms and bring less carbon to the seafloor as they die. Carbon nitrogen and phosphorus are the most important of these nutrients and CNP.
A ratio between 100:5:1 and 100:10:1 should be maintained to ensure maximum microbial activity in aerobic wastewater treatment. Many trace elements or micronutrients are also required. This is because a specific form of nitrogen found in the air nitrogen gas cannot be assimilated by most living organisms or require nitrogen in solid form.
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9. What is the kinetic energy of a 2,000 kg boat moving at 7.9 m/s?
Answer:
62410 J
Explanation:
Kinetic Energy in Joules is given by the equation
[tex]KE = \dfrac{1}{2}mv^2\\\\[/tex]
where
m = mass of the object in kg
v = velocity in m/s
Given m = 2000 kg and v = 7.9 m.s
KE = (1/2) x 2000 x (7.9)²
= 62,410 J or 62.41 KJ
An object’s velocity v as a function of time t is given in the graph above. Which of the following statements is true about the motion of the object?
The object is not moving from t = 4 s to t = 10 s.
The object is not moving from , t , = 4 s to , t , = 10 s.
The object’s initial and final positions are the same.
The object’s initial and final positions are the same.
The object is slowing down from t = 14 s to t = 16 s.
The object is slowing down from , t , = 14 s to , t , = 16 s.
A - The object is not moving from t = 4 s to t = 10 s.
B - The object’s initial and final positions are the same.
C - The object is slowing down from t = 14 s to t = 16 s.
D - The average acceleration of the object from t = 0 s to t = 4 s is different from the acceleration from t = 34 s to t = 36 s.
and how is it solved
The statement that is true about the motion of the object is that the object’s initial and final positions are the same.
d = V * t
V = ( u + v ) / 2
d = Displacement
V = Average Velocity
t = Time
u = Initial velocity
v = Final velocity
For the first 4 seconds,
t = 4 s
V = ( 0 + 10 ) / 2
V = 5 m / s
d = 5 * 4
d = + 20 m
For the next 6 seconds,
t = 6 s
V = ( 10 + 10 ) / 2
V = 10 m / s
d = 10 * 6
d = + 60 m
For the next 4 seconds,
t = 4 s
V = ( 10 + 0 ) / 2
V = 5 m / s
d = 5 * 4
d = + 20 m
For the next 2 seconds,
t = 2 s
V = ( 0 - 5 ) / 2
V = - 2.5 m / s
d = - 2.5 * 2
d = - 5 m
For the next 18 seconds,
t = 18 s
V = ( - 5 - 5 ) / 2
V = - 5 m / s
d = - 5 * 18
d = - 90 m
For the next 2 seconds,
t = 2 s
V = ( - 5 + 0 ) / 2
V = - 2.5 m / s
d = - 2.5 * 2
d = - 5 m
Overall displacement = + 20 + 60 + 20 - 5 - 90 - 5
Overall displacement = + 100 - 100
Overall displacement = 0
If the overall displacement is zero, the initial position and the final position are the same.
Therefore, the statement that is true about the motion of the object is that the object’s initial and final positions are the same.
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