What do the flows of energy and matter through an ecosystem have in common?
Please help me answer this question !
Answers
Answer:
i believe it's the last one
Explanation:
because the first law of thermodynamics states that energy can be changed from one form to another, but it cannot be created or destroyed.
good luck :)
i hope this helps
have a great day !!
Related Questions
how is urine produced
Answers
Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra.
Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra.
When the C4 key on a piano keyboard is pressed, a string inside the piano is struck by a hammer and begins vibrating back and forth at approximately 260 cycles per second.
a. What is the frequency in Hertz of the sound wave?
b. What is the wavelength of the wave?
Answers
Answer:
Frequency = 260 Hz and wavelength = 1.31 m
Explanation:
Given that,
A hammer begins vibrating back and forth at approximately 260 cycles per second.
(a) The frequency of an object is the number of vibrations per unit time. The frequency of the sound wave is 260 Hz.
(b) The speed of sound in air is 343 m/s. So,
[tex]v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{343}{260}\\\\\lambda=1.31\ m[/tex]
Hence, this is the required solution.
1. Which of the following decreases with an increase in altitude?
a. air pressure
b. visibility
c. water vapor
d. none of the above
Answers
Answer: air pressure
Explanation:
Describing Energy Transformations
This activity will help you meet this educational goal:
You will write an explanation of a process using precise language and vocabulary.
Directions
Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the
end of the activity, write a brief evaluation of your work.
Activity
In this activity, you will analyze some events and describe the energy transformations that take place.
Part A
A battery powers a circuit for a small noisy fan. The fan's motor gets warm as it turns. What energy transformations are
taking place?
Answers
Answer:
chemical energy to electrical energy to sound energy to heat energy
Answer:
chemical energy to electrical energy to sound energy to heat energy
Explanation:
describe the working principle of a hydraulic press using Pascal's principle.
Answers
Answer:
A hydraulic press works on the principle of Pascal's law, which states that when pressure is applied to a confined fluid, the pressure change occurs throughout the entire fluid. Within the hydraulic press, there is a piston that works as a pump, that provides a modest mechanical force to a small area of the sample.
not my answer but i hope it helps
Explanation:
SCRABBLE LETTERS: For a word from the given letters related to TEAM SPORT
1. ATKELBSLLA-
6. VERATGLNIL -
2. LSFLOTBA-
7. LAVLOLEBYL -
A ICRO -
8. LOFU-
4. EFERERE-
9. GINNIN -
5. PERIMU -
10. HOTIGNSO -
Answers
Answer:
1. BASKETBALL
A team sport that is placed in an indoor basketball court between two teams.
2. SOFTBALL
A team sport plays in an outdoor stadium or ground. It is similar to a baseball game.
3. COURT
A court is a place where any indoor game or team sport takes place.
4. REFEREE
A referee is a person or official that watches a game closely and decides if the game is played with rules or not.
5. UMPIRE
An umpire is a field official to look after the game to see if everything is according to the rules.
6. TRAVELLING
7. VOLLEYBALL
It is also team game plays in open field or beach between two teams where a net is placed between the teams.
8. FOUL
Foul is a penalty for breaking the rule of the game decides by umpire or refree.
9. INNING
An inning is the part of the game which is played by one of the team
10. SHOOTING
Newton’s 3rd law is for every action, there is an equal and opposite reaction
True of false
Answers
Answer:
true
Explanation:
newton's third law of motion states that if body A exerts a force on the body B, then body B will exert an equal and opposite force on body A,
this is called action reaction pair
hope this helps
If you know any of them, please help!!!!!!
Answers
I believe the answer for 1) is
PEgrav = mass • g • height
PEgrav = m *• g • h
Drag the tiles to the correct boxes to complete the pairs.
Match the human activity with how It intensifies the greenhouse effect.
deforestation
burning fossil fuels
waste disposal in landfills
primary cause of human-created
carbon emissions
destroys natural carbon sinks,
leading to more CO2 in the air
emits methane from decomposing
matter
Answers
Answer:
1Burning of fossil fuel
2Deforestation
3Waste disposal in landfills
Explanation: took test:)
Human activities intensify the greenhouse effect as:
Deforestation -destroys natural carbon sinks, leading to more CO₂ in the air
Burning fossil fuels - the primary cause of human-created carbon emissions
Waste disposal in landfills - emits methane from decomposing matter
What is the greenhouse effect?The greenhouse effect can be defined as a process that occurs when energy heats the planet's surface, but greenhouse gases in the atmosphere stop the heat from returning directly to space and warm the earth.
The natural greenhouse effect retains the earth from freezing at the below-freezing temperature that it will freeze if there were no greenhouse gases. Human activities increase greenhouse gases and trap larger amounts of heat, which cause the Earth's temperature to grow warmer over time.
The Sun delivers most of its energy as visible light and near-infrared light, while the average surface temperature of the Earth emits longer-wavelength infrared IR and radiant heat. These gases emit radiant heat in all directions, traveling heat to the air and warming other greenhouse gases in the atmosphere.
Learn more about the greenhouse effect, here:
brainly.com/question/13706708
#SPJ5
A burst of sound takes 0.4 seconds to reach the seabed and return, if speed of sound in water is 1400m/s. what is the depth of water?
Answers
Explanation:
Given:
Speed of sound = 1400 m/s
Total time taken = 0.4 seconds
To find:
The depth of water
Solution:
As it take 0.4 seconds for the burst to reach the seabed and return (both ways), we can deduce that it takes 0.2 seconds to reach the seabed (one way).
This is because the speed of sound is a constant.
Now, to find the depth, we use the equation
Speed = Distance/Time
Here, we know the values of speed (1400 m/s) and time (0.2 seconds). Distance is the depth of the water, which we need to find. Let the distance be x.
Therefore
1400 = x/0.2
x = 1400 * 0.2
x = 280 m
We get the depth as 280 metres.
Feel free to ask me if you didn't understand any part.
Hope this helps! :D
A yo-yo is twirled on a 4 meter long string so that its tangential
speed is 16 m/s. If the string is only 2 meter long and the revolutions per
second stay constant, what is the new tangential speed?
Answers
Answer:
8m/s
Explanation:
i think i had this question on a test i'm taking so i'm assuming i cannot say for sure if this is correct
Why are temperatures of the currents generally colder at the poles than the equator?
A. Tilt of the Earth on its axis
B. Angle of the sun's rays are less direct
C. Angle of the sun's rays are more direct
D. The Earth's revolution around the sun.
Answers
Answer:
the answer is A
Explanation:
3. Determine the units of the quantity described by the following com-
binations of units:
a. kg (m/s) (1/s)
b. (kg/s) (m/s2)
c. (kg/s) (m/s)
d. (kg/s) (m/s)
Answers
a subwoofer is a type of speaker which plays only the very low notes in a song or movie, which following frequencies would you expect to be able to hear from a subwoofer
10hz
25hz
750hz
1,050hz
Answers
Answer:
25z
Explanation:
A car can go from 20 m/s to 0 m/s in 5 second using 7,000N worth of force. How much mass does the car have?
Answers
Answer: a lot of MASS
Explanation:
Differentiate between:
Transverse wave and Longitudin
Crest and Trough
Answers
Answer:
Crest is the highest point that a wave reaches and… Trough the lowest point that a wave reaches............Transverse waves are waves whose particles vibrate at right angles to the direction of wave travel e.g water wave. .....,.......longitudinal I think it's not "longitudin" are waves whose particles vibrate in a direction parallel to the direction of wave travel e.g sound wave
If the charge 16 C flows through the lightening during time 0.002 s then the AVERAGE current is equal to
80 A
8000 A
80000 A
0 A
Other:
Answers
Answer:
the average current is 8000 A
Explanation:
I got it answered by an expert
HELP MY GRADES-
question: If you see a lightning flash, and you hear the thunderclap one second later, how far away is that lightning?
Answers
How much electrical energy is consumed by a motor of 1 horse power in 1 second?
Answers
Answer:
22.38 kW
Explanation:
A 1 HP motor is supposed to deliver power equivalent to 746 Watts, or in other words, the rotational mechanical energy delivered by the shaft of the motor is rated to be equal to 746 Watts or .746 kW. This .746 kW is the net result delivered by the shaft of the motor “after” overcoming losses from the total power consumed by the motor from its input source, wherein there are losses attributed to mechanical friction, electrical losses within the motor, sound, heat, etc. This difference between the electrical power consumed by the motor from the “input” source and the mechanical energy delivered from the “output” source (shaft) is defined as performance efficiency, which is mostly around 80% in most motors.
Now, presuming that your motor performs at 80% efficiency, the total power it consumes will be .746 kW/80 X 100 = 0.9326 kW/hour.
Therefore, if you keep the motor running for 24 hours, the total power consumption will be 0.9326 kW X 24 Hours = 22.38 kW
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10. What are the only types of passes allowed in floor hockey?
Answers
Answer:
the push pass and the wrist shot i believe
Explanation:
Answer:
Your ans
Explanation:
For floor hockey
An egg sinks in fresh water but floats on concentrated salt solution
Answers
the salt solution exerts a greater up thrust on the egg which balances the weight of the egg, so the egg floats in a strong salt solution but sinks in fresh water
Is positive charge in
the nucleus of an
atom of an element
equal to its atomic
number?
Answers
Answer:
yes the nucleus of an
atom of an element
equal to its atomic
number
If the pelican was traveling 8.79 m/s but was only 2.7 m above the water, how far would the fish travel horizontally before hitting the water below?
Answers
Answer:
6.52m
Explanation:
The horizontal distance travelled is known as its range. This is expressed as;
Range = u* √2H/g
u is the speed of the pelican
H is the maximum height
g is the acceleration due to gravity
Range = 8.79*√2(2.7)/9.8
Range = 8.79 * √5.4/9.8
range = 8.79*√0.5510
Range = 8.79*0.7423
Range = 6.52
Hence the fish will travel 6.52m before hitting the water below
Describe the moons of Mars?
Answers
Answer:
The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are named after the Greek mythological twin characters Phobos (fear) and Deimos (panic) who accompanied their father Ares into battle, SO they were irregular in shape
Explanation:
If the distance between two spherical charged objects increases by a factor of two, then the electrical force between the objects
Answers
Answer:a repulsive electrical force. ... postulates that an electric field surrounds each charged object. If the distance between two spherical charged objects increases by a factor of two, then the electrical force between the objects. decreases by a factor of four.
Explanation: does this help
To open a soda can lid, you can apply a force of 50 N to a car key wedged under
the lid. The car key applies a force of 390 N to the lid. What is the mechanical
advantage of using the car key to open the can lid?
Answers
Answer:
7.8
Explanation:
Here, an effort of 50 N is applied at the car key and overcomes the resistance(or load) of 390 N at the lid.
mechanical advantage
=load/effort
=390 N/50 N
=7.8
A rock is thrown straight up with an initial speed of 15.5 m/s . It is caught at the same distance above the ground . How high does the ball rise? How long does the ball remain in the air?
Answers
Answer:
The height risen by the rock is 12.26 mThe time spent in air by the rock is 3.16 sExplanation:
Given;
initial velocity of the rock, u = 15.5 m/s
at maximum height the final velocity of the rock, v = 0
The height risen by the rock is calculated as follows;
v² = u² - 2gh
0 = u² - 2gh
2gh = u²
h = u² / 2g
h = (15.5²) / (2 x 9.8)
h = 12.26 m
The time spent in air by the rock is known as time of flight, which is calculated as follows;
v = u - gt
0 = u - gt
gt = u
t = u/g
where;
t is the time to reach maximum height
t = 15.5 / 9.8
t = 1.58 s
Time of flight (time spent in air) is calculated as;
T = 2t
T = 2 x 1.58 s
T = 3.16 s.
If a planet we same massas Earth were discovered orbising Barnard's Suarat the same distance
at Earta is orbiting the Son, why would there be less gravitational action between his new planet
and Barmand's Sarthen there is between Earth and the Sun

Answers
Ultraviolet rays are more likely to give you a sunburn than visible light. What statement would be the best possible explanation for this?
Answers
Answer : Visible light cannot penetrate the skin. Ultraviolet rays have a higher frequency and therefore have more energy.
Explanation:
A force of 120 N is acting on a surface of area 100 cm 2 . Calculate the pressure acting on the surface.
Answers
Answer:
Thrust is the force acting normally to a surface. So, Thrust = 1200 N. And , Pressure = Thrust / Area. = 1200 / 0.001. = ...
Explanation:
this right like me