Very little energy is dissipated in the thick connecting wires.
Resistance is inversely proportional to wire length, so less energy is dissipated through the wire and more energy is dissipated through the bulb. The resistance of the wires is low enough that there is not enough voltage drop across the wires so there is no noticeable voltage difference across the bulb.
The more bulbs you connect in series the brighter or brighter the bulb. The light is dimmer because less current flows through each bulb. This is because adding more bulbs in a series means adding more resistance. In a parallel circuit, current flows through separate branches. If another branch is added with another bulb, the current will have to follow an additional path. However the battery produces a constant voltage, so the current through the original lamp and its brightness remain unchanged.
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a railroad car of mass m and speed v collides and sticks to an identical railroad car that is initially at rest. after the collision, the speed of the system
After the collision, the speed of the system will be half as much as before.
Before the collision, the momentum of one of the railroads is zero. After it, both railroads has the same velocity. Then, by the conservation of the total momentum of the system we have
mvi = mvf+mvf
mvi = 2mvf
vi = 2vf
vf = 1/2vi
That is the speed of the railroad together after the collision.
The kinetic energy before the collision is
Ki = 1/2 mvi^2
And after it
Kf = 1/2mvf^2 + 1/2mvf^2.............both railroads has kinetic energy
Kf = mvf^2....................................Replacing vf=1/2 vi
Kf = m (1/2 vi )^2
Kf = 1/2 * 1/2 mvi^2....................The red term is exactly the initial kinetic energy.
Kf = 1/2 Ki
Collision, additionally called impact, in physics, the unexpected, forceful coming together in direct touch of two bodies, inclusive of, as an example, two billiard balls, a golfing club and a ball, a hammer and a nail head, railroad motors while being coupled together, or a falling item and a ground.
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PLEASE HELP NEED ANSWERS ASAP TO FILL IN THE TABLE 20 POINTS GIVEN AND BRAINLIEST ANSWER
An astronaut on the moon dropped an object at rest from a height of 3.0 meters. The table shows data from a sensor used to measure position as a function of time. Complete the table by determining the velocity at each time. Determine the acceleration due to gravity on the moon. Time (s) Position (m) Velocity (m/s) 0.0000 0.1000 0.2000 0.3000 0.4000 0.0000 -0.0081 -0.0326 -0.0733 -0.1304
The acceleration due to gravity on the moon, as determined from the given data, is approximately 0.7095 m/s².
To determine the velocity at each time and calculate the acceleration due to gravity on the moon, we can use the kinematic equations. The velocity can be obtained by calculating the change in position over the change in time.
Using the provided data, we can complete the table as follows:
Time (s) Position (m) Velocity (m/s)
0.0000 0.1000 0 (initial velocity)
0.2000 -0.0081 (0.1000 - (-0.0081)) / (0.2000 - 0.0000) ≈ 0.5417
0.3000 -0.0326 (-0.0081 - (-0.0326)) / (0.3000 - 0.2000) ≈ 0.2533
0.4000 -0.0733 (-0.0326 - (-0.0733)) / (0.4000 - 0.3000) ≈ 0.3957
0.5000 -0.1304 (-0.0733 - (-0.1304)) / (0.5000 - 0.4000) ≈ 0.5543
Now, let's calculate the acceleration due to gravity on the moon. We can assume that the object is in free fall, and the only force acting on it is gravity. The acceleration due to gravity on the moon is approximately 1/6th of the acceleration due to gravity on Earth (9.8 m/s²).
Using the velocity values at different times, we can calculate the acceleration using the formula:
Acceleration = (Final Velocity - Initial Velocity) / Time
Acceleration at 0.2 s = (0.5417 - 0) / 0.2 ≈ 2.7085 m/s²
Acceleration at 0.3 s = (0.2533 - 0.5417) / 0.1 ≈ -2.8834 m/s²
Acceleration at 0.4 s = (0.3957 - 0.2533) / 0.1 ≈ 1.424 m/s²
Acceleration at 0.5 s = (0.5543 - 0.3957) / 0.1 ≈ 1.586 m/s²
Since the object is in free fall, the acceleration is equal to the acceleration due to gravity. Taking the average of the calculated accelerations:
Average Acceleration = (2.7085 - 2.8834 + 1.424 + 1.586) / 4 ≈ 0.7095 m/s²
Therefore, the acceleration due to gravity on the moon, as determined from the given data, is approximately 0.7095 m/s².
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A virtual image in a location the light doesn’t actually reach
Answer:14p +4q-2r
Explanation:
Sum of (10p-r+5p+2q)
10p+5p+2q-r
15p+2q-r
Now subtract( p-2q+r) from (15p+2q-r)
(15p+2q-r) - (p-2q+r)
15p+2q-r-p+2q-r
15p-p+2q+2q-r-r
14p +4q-2r
The answer is 14p +4q-2r
As a battery is used to charge a capacitor, does the overall charge inside the battery get smaller, greater, or stay the same?.
When a battery is used to charge a capacitor, does the battery's total charge get smaller.
What is capacitor?A device without an element is referred to as a capacitor. The capacitance of a capacitor is defined as the ratio of the charge stored in either of its conductors to the potential difference between them. It is assumed that an earthed conductor's capacitance will visibly rise when it is moved close to another conductor in order for a capacitor to work. As a result, a capacitor has two plates with equal and opposing charges that are spaced apart from one another.
When a battery is used to charge a capacitor, electrons that will eventually gather on one plate and become negatively charged are given energy. The opposite plate then acquires a positive charge.
Additionally, this electron is not coming from a battery. When a battery is discharged, its energy has been consumed.
Therefore, while charging a capacitor, the battery's overall charge remains constant.
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Basic Electrical Quantities: Solve the following problems .
A lightning strike carries 5.0 C of charge in the 0.02 s it takes to reach the ground. What is the electric current carried by the lightning strike . please I need a answer fast
The electric current carried by the lightning strike, given it carries 5.0 coulomb in 0.02 second is 250 A. Details below
How to determine the electric currentWe'll begin by writing out the equation relating quantity of electricity, electric current and time. The equation is illustrated below:
Q = It
Where
Q is the quantity of electricity in coulomb (C)I is the electric current in ampere (A)t is the time in second (s)With the above formula, we can obtain the electric current. Details below
From the question given above, the following data were obtained:
Quantity of electricity (Q) = 5.0 CTime (t) = 0.02 sElectric current (I) =?Q = It
5 = I × 0.02
Divide both sides by 0.02
I = 5 / 0.02
I = 250 A
Thus, from the calculation made above, we can draw our conclusion that the electric current carried by the lightning strike is 250 A
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a 1000-kg car experiences a net force of 9500 n while slowing down from 30 m/s to 15.9 m/s. how far does it travel while slowing down?
30 m (rounded to one powerful player) (rounded to one significant figure). Negative displacement indicates a slowdown of the vehicle.
What is the easiest way to define a force?The definition of force in physics is: The pushing or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of the a body. It has a direction and a magnitude.
With an example, what is force?Force: Force is used to indicate a body's tendency to change or alter its state as a result of an external cause. When a force is applied, the body also can alter its size, shape, and motion. kicking the ball, pressing and pulling on the door, or churning bread are a few example.
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What do the three arrows represent in the figure of Earth and the moon? Enter the correct label for each arrow in the diagram.
PLEASE HELP DUE MIDNIGHT
The moon is gravitational at a different point on earth.
Three arrows indicate the direction of the sun on March 18th. full moon 01.04. new moon and 16.04. full moon. To draw the orbit, we need to know the direction to the moon and the distance D to the moon for each observation. Arrows are widely accepted for indicating direction. They are commonly used for signs and directions and are commonly used for road markings.
Up arrows are often used to indicate increasing numbers and down arrows to indicate decreasing numbers. The three-arrow symbol is widely used in the US Antifa movement along with flags based on German Antifa symbols. Anarchists and anti-fascists use this symbol frequently usually to oppose authoritarianism fascism and authoritarian socialism. Circles with arrow symbols were originally used as proofreading bookmarks. Nevertheless, it has become a universal symbol that conveys both masculine and feminine aspects.
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Topic Test
1
D
Which of the following does NOT limit range of motion?
A. weak muscles
B.
age
C. disease
D. bone structure
Active
OA
OB
5
8
9
10
Please select the best answer from the choices provided.
▶
option D active bone structure is the most apt answer for not limiting range of motion.
what is range of motion?
Range of motion refers to the amount of the distance an individual can travel or distance in an individual can make an object travel.
Example the distance travelled by a person while running.
Given:
possible reasons for limited range of motion-
1- weak muscles
2- age
3- disease
4- active bone structure
Weak muscles play an important role in the range of motion for example a person who is will Trend and has developed muscles can throw any object to a greater distance than a novice whose muscles are not much developed.
Age is also important factor as when age increases the muscles become weak and their food the range of motion decreases.
Disease can also decrease the range of motion for example a person suffering from asthma cannot run a greater distance.
While active bone structure also impacts the range of motion, but it is the most trainable of all the given options therefore active bone structure does not impact much to the range of the motion.
therefore, option D active bone structure is the most apt answer for not imitated range of motion.
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when sodium is heated, a yellow spectral line whose energy is 3.37 x 10-19 j is produced. what is the frequency of this light? what is the wavelength of this light?
The frequency of the sodium light is 50.86(s)⁻¹ and the wavelength of the sodium light is 5.898 x10⁻⁷m .
We are given that,
The energy of sodium light is = ΔE = 3.37 × 10⁻¹⁹J
Therefore, to get the frequency and the wavelength of the sodium light
by the equation which is given as,
ΔE = (hc)/λ
Where, h is the plank constant which is 6.626 x 10⁻³⁴ J, c is the velocity of light i.e.3×10⁸m/s , λ is the wavelength of the light which we have to calculate as,
λ = (hc)/ ΔE
λ = ( 6.626 x 10⁻³⁴ J-sec)(3×10⁸m/s)/(3.37 × 10⁻¹⁹J-sec)
λ = 5.898 x10⁻⁷m
The frequency f of sodium light can be calculated by,
f = c /λ
f = (3×10⁸m/s)/( 5.898 x10⁻⁷m)
f = (0.5086 × 10¹⁵)s⁻¹
f = 50.86(s)⁻¹
Therefore, the frequency of the sodium light would be 50.86(s)⁻¹ and the wavelength of the sodium light would be 5.898 x10⁻⁷m .
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Why does the brightness of a bulb not change noticeably when you use longer copper wires to connect it to the battery?.
Very little energy is dissipated in the thick connecting wires.
Little or no electricity is dissipated within the thick connecting wires.
As greater bulbs are added to the collection circuit the intensity or brightness of the bulbs decreases. The light is dimmer because much less present day flows through every bulb. that is because including more bulbs in a sequence way including extra resistance. In a parallel circuit, the present day flows thru separate branches.
If every other bulb is added to some other department the present day will ought to follow an extra course. but, the battery or generator produces a constant voltage, so the current thru the unique lamp and its brightness remain unchanged. Incandescent bulbs related in parallel skip the identical amount of contemporary and therefore shine equally brightly. getting rid of a bulb does no longer extinguish other bulbs.
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Is this statement true or false? brazil is home to 20% of the known living species on earth.
20% of all known living species on earth are found in Brazil. Given statement is True.
Write about Brazil?
Brazilian land is home to 20% of all known species on Earth, making it the country with the most biodiversity in the entire globe. The Amazon rainforest, often known as the "livings of the Earth," occupies the majority of Brazil's northern half of the country's landmass and is responsible for much of the country's astounding biodiversity.
The most diversified of the 18 megadiverse nations is Brazil. It is home to between 15 and 20% of the biological diversity on the planet, including more than 120,000 species of invertebrates, 9,000 kinds of vertebrates, and more than 4,000 species of plants.
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a 8.8 kg object undergoes an acceleration of 3.5 m/s2. (a) what is the magnitude of the resultant force acting on it? incorrect: your answer is incorrect.
Answer: The magnitude of the resultant force acting on the object of 8.8kg is 17.6N
Explanation:
We have that the magnitude of the net external force and the acceleration is give as
F= 17.6N
a=3.5m/s^2
From the question we are told
A 8.8kg object undergoes an acceleration of 3.5 m/s2 .
a. What is the magnitude of the net external force acting on it?
Generally the equation for the magnitude of the net external force is mathematically given as
F=ma
F=8.8*2
Therefore, the magnitude of the resultant force acting on the object is =17.6N.
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a ball dropped from 2 m height by an astronaut on the moon reaches ground in 1.57 s. what is the value of the acceleration of gravity on the moon?
The value of acceleration due to gravity on the moon is 1.62 m/s².
As the ball is dropped on the moon it means that the acceleration is constant.
If the acceleration is constant then we can use the equations of motion.
Using,
S = ut + 1/2at²
Where S is the displacement,
u is the initial velocity,
t is the time,
a is the acceleration due to gravity.
As the ball is dropped it means that initial velocity of the ball is zero the displacement of the ball is 2 m the time that ball takes to reach the surface of the moon is 1.57 seconds,
So, putting all the values in the equation,
We get,
2 = (0)(1.57) + 1/2a(1.57)²
a = 2×2/(1.57)²
a = 1.62m/s².
Hence the value of acceleration due to gravity on the moon is 1.62 m/s².
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Draw a electric circuit powered by 3 cells with a light, a
motor and a resistor that are in parallel, with a switch that turns
all of them on or off, with a voltmeter measuring the voltage of
the 3 cells and an ammeter measuring the current flowing into
the light
Answer:
See sketch below
Explanation:
Here is a quick sketch:
Mark is conducting an experiment to show how an object’s kinetic energy is affected by its mass and velocity. First, he lets an empty wagon roll down a hill and calculates its kinetic energy. Next, he repeats the experiment after placing a bag of sand in the wagon. Which is the best prediction for the second part of his experiment?(1 point)
1. The wagon will have less velocity than when it was empty.
2. The wagon will have the same amount of kinetic energy as when it was empty.
3. The wagon will have less kinetic energy than when it was empty.
4. The wagon will have more kinetic energy than when it was empty.
Answer:
the wagon will have more kinetic energy than when it was empty
Explanation:
HELP PLEASE!! *ILL GIVE BRAINLIEST*
An unattended car rolls slowly across an empty parking lot. Consider the following two cases: case 1, the car hits a light pole and comes to rest; case 2, the car hits a pile of plastic garbage bags and comes to rest. (a) Is the impulse in case 1 greater than, less than, or equal to the impulse in case 2? (b) Is the average force in case 1 greater than, less than, or equal to the average force in case 2?
Reaction distance plus braking equals stopping distance. The published road brake performance tests for almost all contemporary production vehicles show stopping distances from 60 mph that are typically 120 to 140 feet, well under half of the anticipated safety distances.
How does stopping distance at 60 mph get calculated?
The anticipated stopping distance for a car at 60 mph is 73 meters (240 feet), or 18 car lengths overall. This measurement combines the braking distance of 55 meters and the thinking distance of 18 meters.
Your overall stopping distance is at least 268 feet at 50 mph. The total of the 268 feet is composed of: 55 Feet for Perception. 55 feet for a response.
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A motorcycle traveling at 25 m/s accelerates at a rate of 6 m/s2 for 4 seconds. What is the final speed of the motorcycle in m/s?
Initial velocity = Vo= 25 m/s
Final velocity = V = x
Acceleration= a = 6 m/s^2
time= t = 4 seconds
Appy the equation:
V = Vo + at
Replacing:
V = 25 + 6(4) = 25 + 24 = 49 m/s
3 meters per second for 3 soconds
Answer:
9 meters
Explanation:
Assuming this question is asking for the change in position, the way to approach such a problem is multiplying VELOCITY by TIME when velocity is constant.
Velocity = 3 m/s, Time = 3s.
3m/s * 3s = 9m
Which row describes the charge on the strips after rubbing, and the force between the strips after rubbing?
Option 4. The same charge - repulsion describes the charge on the strips after rubbing.
Static charge or an electrostatic charge is a deficiency or extra of electrons that occurs on ungrounded or insulating surfaces. it's miles produced by way of triboelectric costs, expenses which can be generated by friction among surfaces, including the motion of paper thru a copier or printer.
An electrical charge is created when two materials come into contact or are rubbed collectively. when the substances are in touch, electrons can be actually rubbed off of one object and onto the alternative.
Static power is an imbalance of electric fees within or on the floor of a material. The fee stays till it could pass away by way of an electric present-day or electric-powered discharge.
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Which of the following statements is correct about the charge of an atom?A.The charge of an atom depends on the number of neutrons.B.The charge of an atom depends on the number of electrons and the number of protons.C.The charge of an atom depends only on the number of protons.D.The charge of an atom depends only on the number of electrons.
Electron has negative charge and proton have positive charge.
Neutrons do not possess any charge.
Thus, the charge of an atom depends on the number of electrons and the number of protons.
adjustment of the lens by the ciliary body: a.photophobia b.refraction c.amblyopia d.accommodation e.binocular vision
Adjustment of the lens by the ciliary body is accommodation.
The correct option is D.
Briefing:The lens is stretched and its refractive strength is changed by the zonule, a collective term for the suspensory ligaments that the ciliary bodies anchor. Relaxation of the zonule allows for accommodation for nearby items.
What is ciliary body of the eye?A section of the central portion of the eye's wall. The ring-shaped muscle that modifies the curvature of the lens whenever the eye focuses is part of the ciliary body, which is located behind the iris. Additionally, it creates the transparent liquid that fills the area between the iris and the cornea.
What materials makes up the ciliary body?There are muscles, blood vessels, and epithelium in the ciliary body.
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a box on a rough surface has a weight of 100 n. you apply a horizontal force of 12 n (taking the positive direction to the right), but the box does not move. what is the static friction force on the box? the static friction coefficient is 0.25.
The static friction force on the box is 25 N.
What is the definition of static friction?Static friction is a type of friction force that acts on the body when there is no relative motion between the object and the surface. As a result, even when the body is moving, it can still act. However, there shouldn't be any relative motion.
Weight of box W = mg = 100 N
Static friction coefficient = 0.25
Forces acting on box are I) Weight of box mg downwards, 2) Normal force on box N upwards 3)Friction force fs to the left and 4) Applied force P to the right.
N-mg=0⇒ N = mg
Net force acting on box in the vertical direction is zero,
[tex]f_{s}[/tex] ≤ [tex]\mu_{s}[/tex] N⇒[tex]f_{s}[/tex] ≤ [tex]\mu_{s}[/tex]mg⇒[tex]f_{s,max}[/tex] = [tex]\mu_{s}[/tex]mg
Net force acting on box in the horizontal direction is P - [tex]f_{s}[/tex] = 0⇒P= [tex]f_{s}[/tex] (until the box starts moving)
For the the box to move P = [tex]f_{s,max}[/tex]
P= [tex]\mu_{s}[/tex]mg = 0.25 × 100 = 25 N.
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two balls of masses m1 and m2 are moving along a line on frictionless surface with velocities v1 and v2. mass m1 collides elastically with m2. what is the center of mass velocity v cm of this system of two balls after collision?
The center of mass velocity [tex]v_{CM}[/tex] of this system of two balls of masses m1 and m2 with velocities v1 and v2 after collision is ( m1 v1 + m2 v2 ) / ( m1 + m2 )
p = m v
p = Momentum
m = Mass
v = Velocity
For ball 1,
m = m1
v = v1
p1 = m1 v1
For ball 2,
m = m2
v = v2
p2 = m2 v2
Center of mass velocity, [tex]v_{CM}[/tex] = Total momentum / Total mass
Total momentum = p1 + p2
Total mass = m1 + m2
[tex]v_{CM}[/tex] = ( p1 + p2 ) / ( m1 + m2 )
[tex]v_{CM}[/tex] = ( m1 v1 + m2 v2 ) / ( m1 + m2 )
Therefore, the center of mass velocity [tex]v_{CM}[/tex] of this system of two balls is
[tex]v_{CM}[/tex] = ( m1 v1 + m2 v2 ) / ( m1 + m2 )
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if the absolute temperature of a black body is doubled,how is the total emissive power affected?
if the dark body's absolute temperature doubles. Power will be released. Consequently, a factor of 16 increase in power radiation will occur.
What Happens if you double the Temperature of a Blackbody?The temperature is T. (measured in Kelvins). This equation shows that the energy a blackbody emits per square centimeter increases by 24 = 2x2x2x2 = 16 for every doubling of its temperature. Thus, a blackbody emits 16 times more energy per unit area at 5000 K than it does at 2500 K, for instance. The quantity of energy emitted by a blackbody depends on its temperature, and an ideal blackbody absorbs and emits all incident radiation at all wavelengths. When an object's temperature rises, a common phenomena known as blackbody radiation is seen.To learn more about The Temperature of a Blackbody refer:
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A baseball is thrown straight up into the sky. What type(s) of energy is (are) present when the baseball reaches the apex of the throw
O GPE and KE
O entirely KE
O mostly GPE and a little KE
O entirely GPE
entirely KE type of energy is present when the baseball reaches the apex of the throw.
How much power is expended when tossing a baseball?Motion is created by kinetic energy. Kinetic energy is produced by the players who swing the bat and throw the ball, and it is present in both the swinging bat and the pitched ball.
The ball will only have kinetic energy when it is thrown since the would be zero (taking reference at the same position). The speed of the ball, or its kinetic energy, diminishes as it rises, but its height, or its potential energy, increases.
The ball's kinetic energy is dwindling and its gravitational potential energy is rising as it ascends. The cannon ball's kinetic energy is zero when it reaches the top of its arc.
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What observational evidence supports the conclusion that most of the mass of the milky way is in the form of dark matter?.
The orbital speeds of stars far from the galactic center are surprisingly high.
What is milky way ?
The galaxy that contains our Solar System is known as the Milky Way[b], and its name refers to how it appears to us on Earth: a hazy strip of light in the night sky made up of stars that are too close together to be seen individually. The name Milky Way comes from the Latin route lactea, which is a translation of the Greek o (galaktikos kklos), which means "milky circle"[18][19][20]. From Earth, the Milky Way looks as a band because its disk-shaped structure is seen from the inside. Most astronomers believed that the Milky Way held all of the universe's stars until the early 1920s.
The orbital speeds of stars and gas clouds far from the galactic center are surprisingly high suggesting that these stars and gas clouds are feeling gravitational effects
The name of the galaxy that contains our Solar System, the Milky Way[b], refers to how it appears to us on Earth: a hazy strip of light visible in the night sky made up of stars that are too dim to be seen individually. The phrase "Milky Way" is a translation of the Latin route lactea, from the Greek o (galaktikos kklos), which means "milky circle"[18][19][20]. The Milky Way is seen as a band from Earth because its disk-shaped structure is seen from the inside. In 1610, Galileo Galilei used his telescope to break the band of light into individual stars for the first time. The majority of astronomers believed that the Milky Way held every star in the Universe up until the early 1920s.
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5. Ocean temperatures are increasing under climate change. What effect do you think this might have on the biological pump?
If ocean temperatures are increasing under climate change, then it might alter the carbon cycle and therefore it may have negative outcomes on the biological pump.
What does the biological pump mean?The term biological pump makes reference to the mechanism by which inorganic carbon atoms can be fixed into organisms due to photosynthetic processes, which is key to maintaining the homeostasis of the biosphere.
Therefore, with this data, we can see that the increase in ocean temperature may impact on the state of equilibrium of the biosphere by altering the carbon cycle and consequently affecting the biological pump.
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help me please this assignment is due at 11:59 p.m.
A rocket travels in a
straight line at a speed of 5,000 m/s. After 1
min, it is 10,000 m/s. What is the rocket's
acceleration?
83.33ms-² is the rocket's acceleration
a = 10,000–5,000/(60)
a=5,000/60
a=83.33ms-²
What are the requirements for rocket propulsion?Fuel and an oxygen supply, known as an oxidizer, are combined and blasted in a combustion chamber of a rocket engine. The combustion process generates hot exhaust, which is directed through a nozzle to accelerate the flow and generate thrust.
Propulsion is the application of a force to modify the velocity of a vehicle, influencing both its speed and direction. This force is commonly referred to as thrust in aeronautical vehicles.
Today, liquid hydrogen is the American space program's hallmark fuel, and it is employed by other countries in the satellite launch sector. Boeing's Delta III and Delta IV now include liquid-oxygen/liquid-hydrogen upper stages, in addition to the Atlas.
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2. Answer these questions about food safety: How many foods can be cooked at less than 150 degrees and be safe? How many foods need to be cooked at temperatures above 150 degrees to be safe? How many foods need a rest time? What is the purpose of the rest time? List at least five different foods that you or a family member eat or cook.
Food is any substance consumed to provide nutritional support for an organism.
Food is important because it provides nutrients, these nutrients in turn provide: energy for activity, growth, and all functions of the body.
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