Explanation:
Microalgae can offer several benefits for wastewater treatment with their ability to produce large amounts of lipids for biofuel production and the high economic value of harvested biomass for biogas and fertilizer. This study found that salt concentration (∼ 45 g L⁻¹) had more of an effect than salt type on metabolisms of Chlorella vulgaris for wastewater treatment and biofuel production. Salinity stress decreased the algal growth rate in wastewater by 0.003 day⁻¹ per mS cm⁻¹ and slightly reduced nutrient removal rates. However, salinity stress was shown to increase total lipid content from 11.5% to 16.1% while also increasing the saturated portions of fatty acids in C. vulgaris. In addition, salinity increased the algal settling rate from 0.06 to 0.11 m day⁻¹ which could potentially reduce the cost of harvesting for algal biofuel production. Overall, C. vulgaris makes a suitable candidate for high salinity wastewater cultivation and biofuel production.
Answer:
High bioavailability- chloride, fluoride, iodine, potassium, sodium
Low bioavailability- Chromium, iron, manganese, zinc
Explanation:
Essential Minerals there are 16 of them.
Hope this helps you :)
The metric unit that is most often used to describe weight is the _________
Answer:
mass
Explanation:
mass is used in measuring weight. for example kg, tonnes
What is the net force acting upon this object? *
3N : to the left
5 N : to the right
Answers to choose from:
2 N Right
BN
2 N Left
5 N Right
2 N Right
.. .. .. .. .. .. .. ..
Answer:
2 N Right
Explanation:
Net force = 5 - 3
= 2 N to the Right
A plane flies along a straight line path after taking off, and it ends up 220 km farther east and 100.0 km farther north, relative to where it started. In what direction did it fly on the straight line path?
Answer:
North east
Explanation:
The distance travelled by a plane from one point to another is the shortest distance between the two points. This distance travelled is usually a straight line path from point 1 to point 2.
Since the plane ends up 220 km farther east and 100.0 km farther north, the direction of flight for the plane is in the North-East direction.
Let x represent the distance travelled by the plane. Hence:
x² = 100² + 220²
x² = 58400
x = 241.66 km
Why do electric fish need to force electric charges to move?
Write an essay about the things an individual must do in order to adapt and survive the changes that are happening in his/her environment.
5. What is the name of the Scientist who began classification?
O Carl Linnaeus
O Albert Einstein
Sir Issac Newton
Answer:
Carl Linnaeus discovered Classification
Answer:
Carl Linnaeus
Explanation:
Mark me Brainllest
how do we calculate the value of work?
Answer:
Work = Force × Distance
Explanation:
Work = Force × Distance
The SI unit of work is Joule
-TheUnknownScientist
a stone is thrown horizonttaly from a cliff of a hill with an initial velocity of 30m/s it hits the ground at a horizontal distance of 80m from the foot of the hill how long does a stone travel? what is the height of the hill? (please show the process)
Answer:
a) Time = 2.67 s
b) Height = 35.0 m
Explanation:
a) The time of flight can be found using the following equation:
[tex] x_{f} = x_{0} + v_{0_{x}}t + \frac{1}{2}at^{2} [/tex] (1)
Where:
[tex] x_{f}[/tex]: is the final position in the horizontal direction = 80 m
[tex] x_{0}[/tex]: is the initial position in the horizontal direction = 0
[tex]v_{0_{x}}[/tex]: is the initial velocity in the horizontal direction = 30 m/s
a: is the acceleration in the horizontal direction = 0 (the stone is only accelerated by gravity)
t: is the time =?
By entering the above values into equation (1) and solving for "t", we can find the time of flight of the stone:
[tex] t = \frac{x_{f}}{v_{0}} = \frac{80 m}{30 m/s} = 2.67 s [/tex]
b) The height of the hill is given by:
[tex] y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2} [/tex]
Where:
[tex] y_{f}[/tex]: is the final position in the vertical direction = 0
[tex] y_{0}[/tex]: is the initial position in the vertical direction =?
[tex]v_{0_{y}}[/tex]: is the initial velocity in the vertical direction =0 (the stone is thrown horizontally)
g: is the acceleration due to gravity = 9.81 m/s²
Hence, the height of the hill is:
[tex] y_{0} = \frac{1}{2}gt^{2} = \frac{1}{2}9.81 m/s^{2}*(2.67 s)^{2} = 35.0 m [/tex]
I hope it helps you!
What protects and supports body organs and provides a framework the muscles use to support movements,made up of bones and joints
Answer: Skeletal system
Explanation:
The skeletal system is a framework of the body. It comprises of connective tissues like bones, tendons, ligaments, and cartilage. All these connective tissues of the skeletal system connect with the muscular system of the body this helps in the locomotion of the body. The conjugation of the musculoskeletal system will also protect the internal organs of the body and will prevent the internal organs from injuries.
Answer:
the skeletal system
Explanation:
Because our skeleton is the framework of the body. :)
please explain application of Stephan boltzmann law
Answer:
This law is used to find the luminosity (the rate of energy released), for an object given its surface temperature. This law assumes the body acts as a black-body radiator (an object that emits energy from the entire EM spectrum)
For a given object with a constant surface area, the Stefan-Boltzmann law says that luminosity is proportional to the temperature raised to the fourth power.
Explanation:
One way to think about circular motion is that the object is continuously ____________.
A. Prevented from moving in a straight line.
B. Allowed to move in a straight line.
C. Forced to move in a straight line.
D. Encouraged to move in a straight line.
Answer:
A
Explanation:
circular motion means the object will follow a circular trajectory.
Answer:
the answer for the question is option A
A drop of oil of volume 10 ^-10 m3 spreads out on water to make a circular film radius 10^-1m what is the thickness of the film
Answer:
The thickness of the film is = 3.183e-9m
Explanation:
It will help us if we understand that the shape of the circular film can be approximated to be a cylinder. The height of this cylinder, or its thickness, in this case, will be very small.
Since we can approximate the shape of the drop of oil to be a cylinder, after it has spread out on the surface of the water, we can use the cylindrical geometric formulas to find out how thick the film is.
The volume of a cylinder = [tex]\pi r^2 h[/tex]
our radius is given as [tex]10^{-1}m = 0.1m[/tex]
the volume is [tex]10 ^{-10} m^3=1e-10m^3[/tex]
Remember that our task is to find the height of the cylinder. We can do this by making the height the subject of the formula.
[tex]h = \frac{Volume}{\pi r^2} = \\\\\frac{1e-10}{\pi \times 0.1^2} = 3.183e-9m[/tex]
Therefore, the thickness of the film is = 3.183e-9m
what is frictional less pulley
Answer:
Conditions under which the belt and pulleys are operating – The friction between the belt and pulley may decrease substantially if the belt happens to be muddy or wet, as it may act as a lubricant between the surfaces.
Explanation:
I hope that this would be helpful
In which of the following situations is the Doppler effect absent?
42 POINTS!!!!
are players trying to minimize or maximize friction when playing volleyball?
None
Friction in Volleyball
Frication plays a huge role in every aspect of our lives; it can play a negative or positive role. In volleyball there are various types of friction that have positive influences on the way the game is played and there are others that play a negative role in the way the game is played.
Positive friction in volleyball.
In volleyball the aim of the game is to strike a ball into play that your opponent cannot return or finds it difficult to return. A friction force that makes this possible is the friction of the air on the ball, for example when a player hits a ball with topspin into play, the friction of the air on the ball makes it spin faster than it otherwise would. Topspin makes a ball harder to pick-up and pass to the setter.
Another force that is present is the ball itself, if there was no friction it would be virtually impossible to pass set, or hit the ball, the ball would just slip through your arms or hands.
When jumping a player also uses the frictions of their feet on the floor to gain a higher jump to strike the ball at maximal height, if this didn't exist players would be slipping and sliding around all over the court.
Negative friction in volleyball.
Friction also plays a negative part in the game of volleyball, when a player dives for a ball the friction of the court on their skin causes court burn or friction burn. Although the friction of the rubber soles of shoes on the court is a positive it can also be a negative, if there is too much friction players can become injured from the sudden stopping that the friction can cause. Some injuries that can result from this would be hyperextensions of the knees and or ankle injuries.
A pelican flying along a horizontal path drops a fish from a height of 12.3 m. the fish travels 16.0m horizontally before it hits the water below. What is the Pelican's initial speed?
Answer:
10.1 m/s
Explanation:
Let the coordinates of the pelican's position be (x, y).
Now, since it is dropped from a height of 12.3 m, then initial velocity is zero and using Newton's 2nd law of motion, we have;
12.3 = 0 - ½gt²
½gt² = 12.3
t² = 12.3 × 2/9.8
t² = 2.51
t = √2.51
t = 1.5843 s
Now, it travels 16.0m horizontally before it hits the water below. Using the formula, distance = speed × time, we have;
16 = v_x•t
Thus;
16 = v_x × 1.5843
v_x = 16/1.5843
v_x = 10.1 m/s
Now, the velocity in the vertical y-direction is zero.
Thus;
v = √((v_x)² + (v_y)²)
v = √((10.1² + 0²))
v = 10.1 m/s
HURRY PLEASE HELP ME
Which of the following is an incorrect statement?
A pencil on a table contains potential energy.
Potential energy does work.
All objects contain potential energy.
Potential energy is stored energy.
Answer:
I think it is Potential energy is stored energy
Explanation:
Answer:
potential energy is stored energy, to my knowledge
Part C
What is likely to happen to the trees if the trend continues?
Answer:
The beetles consume the trees as food. So, if the trend continues, it’s likely that the trees will die out in the coming years
Explanation:
How many pieces of thin, light glass will have the same effect as one thick, dark glass?
Answer:
Explanation:
i would 3 thin light glass would have the same effect as one thick dark glass
Four pieces of thin, light glass will have the same effect as one thick, dark glass.
What is Glass ?Glass is an inorganic solid substance that is generally transparent or translucent, as well as hard, brittle, and resistant to the elements. From ancient times, glass has been used to make utilitarian and aesthetic products, and it is now highly significant in uses as diverse as building construction, kitchenware, and telecommunications. It is created by rapidly chilling molten components such as silica sand to prevent the creation of visible crystals.
A quick discussion on glass follows. A lot of articles go into great length on glass. Stained glass and glassware explain stained glass and the aesthetic qualities of glass design. Industrial glass discusses the composition, characteristics, and industrial manufacture of glass. The physical and atomic properties of glass are discussed in amorphous solid.
To know more about Glass ;
https://brainly.com/question/30343401
#SPJ2.
If you're the white mouse, what will you do in order for you to survive
Answer:
If I was the white mouse, I would either find somewhere to hide that matches my fur color to camoflouge with or dig into the dirt so less visible.
To find white colour habitat.
What will I do for my survival?If I was the white mouse, I would find white colour place for living because in that white colour the predators can't see me and i will be safe from them so we can conclude that finding white colour habitat is the best choice to safe myself.
Learn more about survive here: https://brainly.com/question/24323334
A solenoid coil 10cm long has 40 turns cm-1. The current rises from zero to its maximum value of 5.0000 A and 0000.01s when the switch is closed. Find the energy stored in magnetic field if the area of cross section of solenoid be 28 centimeter square.
Answer:
Explanation:
Energy stored in a solenoid per unit volume = B₀² / (2μ₀)
B₀= μ₀ n I₀
n is no of turns per unit length .
Energy stored in a solenoid per unit volume = ( μ₀ n I₀)² / (2μ₀)
=μ₀n²I₀²/2
n = 40 turns / cm = 40 x 100 turns per meter.
I₀ = 5000A .
Putting the values
Energy stored in a solenoid per unit volume
= 4π x 10⁻⁷ x 40 x 10² x 5000² /2
= 1256 J/ m³
Volume of solenoid = cross sectional area x length
= 28 x 10⁻⁴ x .10 = 2.8 x 10⁻⁴ m³
Total energy stored = 1256 J / m³ x 2.8 x 10⁻⁴ m³
= .35 J .
Which of the following statements best describes a difference between
nuclear fission and nuclear fusion reactions?
Nuclei gain electrons during fission and release electrons during fusion.
Fission generates potential energy, and fusion generates kinetic energy.
С
C
Heavy nucleus split during fission and two light nuclei bind together during
fusion.
O
Fission forms heavier elements, and fusion forms lighter elements.
Answer:
C
Heavy nucleus split during fission and two light nuclei bind together during
fusion.
The eye of the Atlantic giant squid has a diameter of 3.50 × 10^2 mm. If the eye
is viewed in a concave mirror with a radius of curvature equal to the diameter
of the eye and the eye is 0.800 × 10^3 mm from the mirror, how far is the image
from the mirror? What is the size of the image? Is the image real or virtual?
Answer:
q = 224 mm, h ’= - 98 mm, real imagen
Explanation:
For this exercise let's use the constructor equation
[tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]
where f is the focal length, p and q are the distance to the object and the image respectively.
In a mirror the focal length is
f = R / 2
indicate us radius of curvature is equal to the diameter of the eye
R = 3,50 10² mm
f = 3.50 10² /2 = 1.75 10² mm
they also say that the distance to the object is p = 0.800 10³ mm
1 / q = 1 / f - 1 / p
1 / q = 1 / 175 - 1 /800
1 / q = 0.004464
q = 224 mm
to calculate the size let's use the magnification ratio
m = [tex]\frac{h'}{h} = - \frac{q}{p}[/tex]
h '= [tex]- \frac{q}{p} \ h[/tex]
h ’= - 224 350 / 800
h ’= - 98 mm
in concave mirrors the image is real.
Which energy transformation occurs in plants, allowing them to make food?
what three types of electromagnetic waves carry most of the sun's energy that strikes Earth. Do Not Send Me A Link.
Answer:
The answer is C.
Answer:
The answer would be the second one I'm pretty sure.
Explanation:
A flower pot with a mass of 1.2 kg is sitting on a ninth story windowsill 30 meters above the ground. How many joules of energy does the flower pot have? Is the energy potential energy or kinetic energy?
Pt.2
USE THE QUESTION ABOVE: The owner of the flower pot gave it to a friend who lived on the second floor of the
apartment building. This person also put it on their windowsill which was 6 meters above the ground? Now how
much gravitational potential energy would the flower pot have now?
Answer:
(assuming gravity = 10m/s2)
answer for part 1 :
the pot will possess potential energy and not kinetic energy.
the energy which the pot possess is = PE of the pot
PE = mgh = 1.2x 10 x 30 = 360 J
answer for part 2 :
PE = mgh = 1.2 × 10 × 6 = 72 J
Explanation:
the PE of a body is not due to its state of motion, its due to the state of rest of the body. when the body starts moving it possess kinetic energy.
What are the products(what comes out of) photosynthesis
A. Carbon dioxide , water, sunlight
B. Glucose and carbon dioxide
C. Carbon dioxide water and light energy
D. Glucose and oxygen
Please answer this if you don’t know the answer don’t answer ( dont guess randomly) 11 points
Answer:
D
Explanation:
the 3 products of photosynthesis are glucose (sugar), oxygen and water. D just doesn't include water.
Answer:
It would be C
Explanation:
plants convert carbon dioxide from the air into oxygen.
Use the "Law of Reflection" to describe why you cannot see your reflection in a piece
of paper.
Answer:
it does not mirror the image
What is physic?............
Physics is the study of nature and law
Answer:
Physics is the science of matter and how matter interacts. Matter is any physical material in the universe. Everything is made of matter. Physics is used to describe the physical universe around us, and to predict how it will behave.
I’m think 3 or 1.. am I right?
Answer:
C-3 I beleive it is three!!!!
Explanation:
Hope this helps!
Have a grreat day!
-Hailey
Answer:
it is n2+3
Explanation: