The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that produces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.
Which food chain correctly describes the flow of energy in an ecosystem?
A) grass → grasshopper → fish → human
B) grasshopper → fish → human
C) human → fish → grasshopper
D) human → grasshopper → fish → grass
Answers
Answer:
A.)
Explanation:
The answer is food chain A, as plants produce their own food using photosynthesis, therefore making them producers.
A grasshopper then eats this grass, making it a consumer as it is obtaining its energy from the producer. It is then eaten by a fish and a human. This chain accurately describe the flow of energy in an ecosystem, as it goes, producer, consumer, consumer, consumer
Hope this helps a little
Answer:
sorry
Explanation:
patulong
Related Questions
Find the vector whose magnitude is 5 and which is in the direction of the vector 4i -3j +k
Answers
The vector with a magnitude of 5 and in the direction of the vector 4i - 3j + k is approximately (20/√26)i + (-15/√26)j + (5/√26)k.
To solve this problemThe given vector can be normalized before being multiplied by the desired magnitude. This is how to locate the vector:
The vector that has been provided should be normalized by dividing each of its components by its magnitude. The Pythagorean theorem can be used to determine the magnitude of the vector 4i - 3j + k:
Magnitude = √(4² + (-3)² + 1²) = √(16 + 9 + 1) = √26
Normalize the vector by dividing each component by the magnitude:
Normalized vector = (4/√26)i + (-3/√26)j + (1/√26)k
Multiply the normalized vector by the desired magnitude:
To obtain a vector with a magnitude of 5, multiply each component of the normalized vector by 5:
Desired vector = 5 * ((4/√26)i + (-3/√26)j + (1/√26)k)
Simplifying the expression gives:
Desired vector ≈ (20/√26)i + (-15/√26)j + (5/√26)k
So, the vector with a magnitude of 5 and in the direction of the vector 4i - 3j + k is approximately (20/√26)i + (-15/√26)j + (5/√26)k.
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What do you buy from the power company?
only energy*
electrons and energy
only electrons
Answers
Answer:
From the power source we have to buy only energy.
Explanation:
Energy is released when an electron loses potential energy as a result of the transfer from higher state to lower state.
Electricity is the movement of electrons between atoms and it doesn't means we can isolate the electrons from the atom and sell it. It remains the part of atom and hence only energy can be purchase form the power company.
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What is the magnitude of the resultant vector? Round your answer to the nearest tenth. m
Answers
The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.
In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.
When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.
For example, if the answer is 12.345, we would round it to 12.3.
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1. If the distance between the center of the fifth compression and the center of the ninth compression of a longitudinal wave is 4m, then the wavelength of this wave is
a. 9 m. b. 1.2 m. c. 1.5 m. d.)1 m.
Answers
The wavelength of this wave is 1 meter (option d).
To determine the wavelength of a longitudinal wave, we need to find the distance between two consecutive compressions or rarefactions. In this case, the distance between the center of the fifth compression and the center of the ninth compression is given as 4 meters. Since there are four compressions between the fifth and ninth compression, the total distance covered by these four compressions is 4 meters. Therefore, the average distance between consecutive compressions is 4 meters divided by 4, which is 1 meter. The wavelength of a longitudinal wave is the distance between two consecutive points with the same phase, which, in this case, is the distance between consecutive compressions. It is important to note that the number of compressions or rarefactions does not directly affect the wavelength. The wavelength is determined by the distance between consecutive points with the same phase. In this case, the given information allows us to calculate the average distance between consecutive compressions, giving us the wavelength of the wave. (option d).
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If you have a 0.125 kg lead piece at
20.0°C, how much heat must you
add to melt it? (Remember, you
must warm it to its melting point
first.)
Material
Lead
Melt Pt (°C)
327
L (1/kg)
2.32.104
Boil Pt (°C) Lv (1/kg)
1750 8.59.105
c (1/(kg*c)
128
(Unit = J)
Answers
Answer:
7,812 J
Explanation:
Using the relation:
Q = mcΔθ
Q = quantity of heat
C = specific heat capacity of lead
Δθ = temperature change (T2 - T1)
M = mass of substance
Q = mass * specific heat * Δθ
Q = 0.125kg * 128 * (327 – 20)
Q = 0.125 * 128 * 307
Q = 4912 J
For melting:
Q = mass * Hf
0.125 * (2.32 * 10^4)
= 2,900 J
Total = 4,912 J + 2,900 J = 7,812 J
Calculate the kinetic energy (in joules) of a 108kg women running at a speed of 8m/s.
Answers
Answer:
KE = 3456 J
Explanation:
helppppp please i give brainly-est :
Answers
Answer:
B
Explanation:
because large dark clouds can bring heavy rain, snow, sleet and even strong storms.
Find the moment of inertia about the y-axis for three masses in an equilateral triangle if m = 2.00 kg and the sides are 0.500 m. (The connecting rods are massless).
Answers
The centroid of an equilateral triangle is the intersection point of its medians, which is also the center of mass. The medians of an equilateral triangle are equal in length and intersect at a point that is two-thirds of the way from each vertex to the opposite side. Therefore, the distance from the centroid to each vertex is:
h = (√3/2) s
where s is the length of a side. Substituting s = 0.500 m, we get:
h = (√3/2) (0.500 m) ≈ 0.433 m
The moment of inertia of an equilateral triangle with respect to its centroid is:
I = (1/12) m s^2
Substituting m = 2.00 kg and s = 0.500 m, we get:
I = (1/12) (2.00 kg) (0.500 m)^2 = 0.0417 kg m^2
Now, we can use the parallel axis theorem to find the moment of inertia about the y-axis. The parallel axis theorem states that the moment of inertia about any axis parallel to the centroidal axis is equal to the moment of inertia about the centroidal axis plus the product of the total mass and the square of the distance between the two axes.
In this case, the y-axis is parallel to the centroidal axis and passes through the center of the equilateral triangle. The distance between the two axes is the distance from the centroid to the center, which is:
d = h/2 = (√3/4) s
Substituting s = 0.500 m, we get:
d = (√3/4) (0.500 m) ≈ 0.2165 m
The total mass of the system is:
M = 3m = 6.00 kg
Therefore, the moment of inertia about the y-axis is:
Iy = I + Md^2 = 0.0417 kg m^2 + (6.00 kg) (0.2165 m)^2 ≈ 0.573 kg m^2
So, the moment of inertia about the y-axis for three masses in an equilateral triangle with m = 2.00 kg and sides of 0.500 m is approximately 0.573 kg m^2.
Two objects of the same mass are in a room At which of the following distances will the greatest gravitational force be exerted by one object on another
Answers
Answer:
2m
Explanation:
I hope it's helpful for youHow much pressure is applied to the ground
by a 105 kg man who is standing on square
stilts that measure 0.05 m on each edge?
Answer in units of Pa.
Answers
First, we will find the area of the base of the stilts given by:
A = l^2 = 0.05 m * 0.05 m
A = 0.0025 m^2
The pressure applied to the ground is given by: P = F/A
P = 1029.05 N / 0.0025 m^2
P = 411620 Pa
Therefore, the pressure applied to the ground by a 105 kg man standing on square stilts that measure 0.05 m on each edge is 411620 Pa.
Does pressure depend on the surface area?Yes, pressure does depend on the surface area. Pressure is defined as the force per unit area, which means that the pressure exerted on a surface is directly proportional to the force applied and inversely proportional to the area over which the force is distributed.
What is the relation between pressure and gravity?The force of gravity is a fundamental force that can give rise to pressure differentials in fluids and gases. The pressure within a fluid or gas is related to the weight of the fluid or gas above a point, which is related to the force of gravity acting on the fluid or gas.
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An object is thrown vertically up in the air. Its initial velocity is 6 m/s. What is the object's maximum height? (use g=9.8 m/s^2)
Answers
An object is thrown vertically up in the air. Its initial velocity is 6 m/s. The object's maximum height is 1.83673 m.
What is Projectile motion?
Projectile motion can be regarded as a form of motion that can be experienced by an object when its been projected near the Earth's surface and follows curved path under the action of gravity only.
Given, the velocity of ball, u= 6 m/s
Here, v be the final velocity, u be the initial velocity and H be the height.
Velocity of the ball at maximum height is zero, v=0
v² - u² =2aH
0−(6)²=2×(−9.8)×H
⟹H= 1.83673 m
Thus, the object's maximum height is 1.83673 m.
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A system consists of two uncharged metal spheres, each suspended on an insulating string and connected to the other by a thin
conducting wire. A positively charged rod is brought near, but does not touch, the left sphere, and the sphere is attracted to the rod. Which
of the following is correct about the net charge on the right sphere as a result?
Answers
The right sphere will acquire an equal and opposite net positive charge to balance the negative charge on the left sphere.
Electrostatic attractionSince the left sphere is attracted to the positively charged rod, it means that the left sphere acquires a temporary negative charge due to induction.
The positive charge on the rod repels electrons in the left sphere, causing them to move away from the rod side and accumulate on the opposite side, resulting in a net negative charge on the left sphere.
According to the principle of charge conservation, the net charge on the system must remain zero. Therefore, the right sphere acquires an equal and opposite net positive charge to balance the negative charge on the left sphere.
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A roller coaster is at a peak of 20m and has a mass of 900kg. What is the potential energy of the roller coaster?
O 100000 J
10000 J
O 9.8 J
O 176400 J
Answers
The potential energy of the roller coaster is 176,400 J (joules).
The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.
In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).
Using the formula, we can calculate the potential energy:
PE = mgh
= (900 kg)(9.8 \(m/s^2\))(20 m)
= 176,400 J
Therefore, the potential energy of the roller coaster is 176,400 J (joules).
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The driver of a car travelling at 65km/h in an easternly direction, steps on the brakes and stops in 4.0s. while braking, the average acceleration of the car in (m/s^2)
A) 16.3 m/s^2 towards the west
B) 4.5 m/s^2 towards the west
C) 4.5 m/s^2 towards the east
D) 16.3 m/s^2 towards the east
Answers
The acceleration is 4.5 m/s^2 towards the west. Option B
What is the velocity?We have to in this case use the equation of the motion that have been uniformly accelerated so as to be able to find the acceleration which is the rate of the change of the velocity of the object with time.
Acceleration = Change in the velocity / Time
Initial velocity = 65km/h or 18.1 m/s
Final velocity = 0 m/s
Time taken = 4.0 s
Then we have that;
Acceleration = 0 - 18.1/4
= -4.5 m/s^2
The acceleration of the object is 4.5 m/s^2 towards the west as shown above.
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How do the permanent magnets in an electric generator induce a current in a loop of wire that is moving between them?
A. The magnets cause charged particles within the wire to move as the poles of the magnets switch.
B. The moving electrons flow from the permanent magnets into the loop of wire.
C. The magnetic field of each magnet attracts the metal in the moving loop of wire.
D. The magnetic field between the magnets causes the charged particles within the wire to move.
Correct answer is D
Answers
The magnetic field between the magnets causes the charged particles within the wire to move.
According Faraday's law of electromagnetic induction, whenever their is a relative motion of a conductor is magnetic field, an emf will be induced in the conductor and the strength of the induced emf is directly proportional to the rate of change of magnetic flux linking the circuit.
The motion of the electrons is due to magnetic field created by the permanent magnet of the electric generator.
Thus, the magnetic field between the magnets causes the charged particles within the wire to move.
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a box of mass 8.0 kg rests on a horizontal rough surface. a string attached to the box passes over a smooth pulley and supports a 2.0 kg mass at its other end, when the box is released, a frictional force of 6.0 n acts on it. (a) draw free-body diagrams of the 8.0 kg box and the 2.0 kg mass. (b) determine the (i) acceleration of the system, (in) tension in the string.
Answers
a. The free-body diagrams of the 8.0 kg box and the 2.0 kg mass is attached below.
bi) the acceleration of the system is 0.4 m/s^2
bii) the tension in the string is 0.8 N.
How do we calculate?Net force = ma
Net force = T - F_friction
where T is the tension force and F_friction is the frictional force.
Substituting the given values, we have:
T - F_friction = ma
T - 6.0 N = (8.0 kg + 2.0 kg) a (since the tension force acts on both masses)
T - 6.0 N = 10.0 kg a
(ii) To find the tension in the string, we can apply Newton's second law of motion to the 2.0 kg mass:
Net force = ma
where m is the mass of the mass and a is the acceleration of the system. The net force on the mass is the tension force:
Net force = T
Substituting the given values, we get:
T = ma
T = 2.0 kg x a
To solve for T, we need to find the acceleration of the system.
To find both a and T, we can use the equations we derived above and solve them simultaneously:
T - 6.0 N = 10.0 kg a (equation 1)
T = 2.0 kg x a (equation 2)
Substituting equation 2 into equation 1, we get:
2.0 kg x a - 6.0 N = 10.0 kg a
Solving for a, we get:
a = 0.4 m/s^2
Substituting a into equation 2, we get:
T = 2.0 kg x 0.4 m/s^2 = 0.8 N
Therefore, the acceleration of the system is 0.4 m/s^2 and the tension in the string is 0.8 N. of the system is 0.4 m/s^2 and the tension in the string is 0.8 N.
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How much distance does a car travel with a speed of 2m/s in 15 min?
Answers
Explanation:
1 minute is 60 seconds so you multiply 60 * 15 and then multiply that answer * 2
A tire is filled with air at 22oC to a gauge pressure of 240 kPa. After driving for some time, if the temperature of air inside the tire is 45oC, what fraction of the original volume of air must be removed to maintain the pressure at 240 kPa?
Answers
Answer:
7.8% of the original volume.
Explanation:
From the given information:
Temperature \(T_1\) = 22° C = 273 + 22 = 295° C
Pressure \(P_1\) = 240 kPa
Temperature \(T_2\) = 45° C
At initial temperature and pressure:
Using the ideal gas equation:
\(P_1V_1 =nRT_1\)
making V_1 (initial volume) the subject:
\(V_1 = \dfrac{nRT_1}{P_1}\)
\(V_1 = \dfrac{nR*295}{240}\)
Provided the pressure maintained its rate at 240 kPa, when the temperature reached 45° C, then:
the final volume \(V_2\) can be computed as:
\(V_2 = \dfrac{nR*318}{240}\)
Now, the change in the volume ΔV = V₂ - V₁
\(\Delta V = \dfrac{nR*318}{240}- \dfrac{nR*295}{240}\)
\(\Delta V = \dfrac{23nR}{240}\)
∴
The required fraction of the volume of air to keep up the pressure at (240) kPa can be computed as:
\(= \dfrac{\dfrac{23nR}{240}}{ \dfrac{295nR}{240}}\)
\(= {\dfrac{23nR}{240}} \times { \dfrac{240}{295nR}}\)
\(= 0.078\)
= 7.8% of the original volume.
You are driving West at 38 m s . Ahead of you is an ambulance traveling East (towards you) at 31 m s . You hear the ambulance siren at a frequency of 411 Hz. What is the actual frequency that the ambulance is emitting
Answers
Answer:
The right answer is "335.18 Hz".
Explanation:
Given:
Velocity of observer,
\(v_0=38 \ m/s\)
Velocity of source,
\(v_s=31 \ m/s\)
Frequency,
\(f=411 \ Hz\)
As we know,
⇒ \(F=(\frac{v-v_0}{v+v_s} )\times f\)
\(=(\frac{343-38}{343+31} )\times 411\)
\(=(\frac{305}{374} )\times 411\)
\(=0.815\times 411\)
\(=335.18 \ Hz\)
Is frictional force the only example of non-conservative force?
Answers
Answer: NO, there are many examples of non-conservative forces.
Explanation: Conservatives forces are special forces whose work is zero in a closed path.
Magnetic and Electric fields are Non- Conservative.identify the factor that are causing change in habitat
Answers
Answer:
There are many factors that are causing change in habitats. But, the main one would be deforestation. Deforestation is where, people go and chop down a whole bunch of trees in a specific area to create more land, and for wood. But, this isn't always good, because it destroys animal's homes that are living either in the tree, or on top of the tree, etc.
Explanation:
Answer:
these changes can happen for different reasons. Some of the changes happen because something that people do or because of weather patterns or a natural disaster. Animals and plants in habits are affected by any change that happens to an environment
gina wants to find out if the temperature of water affects the solubility of a material. here are the variables in her experiment. she get three containers of equal size and labelled them A, B and C. then pour 50ml of hot water in container A, 50ml of lukewarm water in container B, and 50ml of cold water in container C, she then pour 1 teaspoon of salt in each container and stir it fo three minutes. then observes the result
Answers
The temperature of water affects the solubility of material the ability of a material, the solute, to combine with another substance, the solvent, is known as solubility in chemistry.
The contrary is appropriate for insoluble except in extremely rare circumstances, a solid or liquid cannot be "dissolved" in gas without first becoming gaseous composition of the solute and solvent, including their pH and the presence of other dissolved substances, as well as temperature and pressure, are the key determinants of solubility. The dependence is frequently explicable in terms of interactions between the atoms, molecules, or ions of the two substances as well as in terms of thermodynamic notions like enthalpy and entropy.
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Explain how and why water travels through the four Earth systems as it moves through the water cycle
Answers
Particles q₁ +8.0 μC, q2 +3.5 μC, and
93-2.5 μC are in a line. Particles q₁ and q2 are
separated by 0.10 m and particles q2 and q3 are
separated by 0.15 m. What is the net force on
particle q₂?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
+8.0μ.C
+91
0.10 m
+3.5 C
+92
0.15 m
-2.5μ C
93
Answers
The net force on particle q₂, located between particles q₁ and q₃, is approximately 189000 N. The force exerted by particle q₁ on q₂ is positive and equals 252000 N, while the force exerted by particle q₃ on q₂ is negative and equals -63000 N.
To find the net force on particle q₂, we need to calculate the individual forces exerted on q₂ by particles q₁ and q₃ and then determine their sum.
The force between two charged particles can be calculated using Coulomb's law:
F = k * |q₁ * q₂| / r²
Where F is the force between the particles, k is the electrostatic constant (k ≈ 9.0 x \(10^9\) Nm²/C²), q₁ and q₂ are the charges of the particles, and r is the distance between them.
First, let's calculate the force exerted on q₂ by q₁:
F₁₂ = k * |q₁ * q₂| / r₁₂²
F₁₂ = (9.0 x \(10^9\) Nm²/C²) * |(8.0 μC) * (3.5 μC)| / (0.10 m)²
F₁₂ ≈ 252000 N
The force is positive because q₁ and q₂ have opposite charges.
Next, let's calculate the force exerted on q₂ by q₃:
F₂₃ = k * |q₂ * q₃| / r₂₃²
F₂₃ = (9.0 x \(10^9\)Nm²/C²) * |(3.5 μC) * (-2.5 μC)| / (0.15 m)²
F₂₃ ≈ -63000 N
The force is negative because q₂ and q₃ have the same charge.
Finally, we can find the net force on q₂ by summing the individual forces:
Net force = F₁₂ + F₂₃
Net force = 252000 N + (-63000 N)
Net force ≈ 189000 N
The net force on particle q₂ is approximately 189000 N.
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Helpppp meeeee eee!!
Answers
Answer: its a
Explanation: hope this help im sorry if its wrong
What is the density of a substance that has a volume of 14 milliliters and a mass of 13.2 grams
Answers
Answer:
Below
Explanation:
You can use this formula to find the density of something
density = mass / volume
Plugging our values in.....
density = 13.2 / 14
density = 0.9428571429 g/mL
Rounding to sig figs we get....
density = 0.94 g/mL
Hope this helps! Best of luck <3
Answer:
\(\huge\boxed{\sf Density = 0.94\ g/mL}\)
Explanation:
Given:
Volume = 14 mL
Mass = 13.2 g
Required:
Density = ?
Formula:
Density = Mass / Volume
Solution:
Density = 13.2 / 14
Density = 0.94 g/mL
\(\rule[225]{225}{2}\)
Hope this helped!
~AH1807Peace!What's the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s?
Question 16 options:
A)
12,000 J
B)
2,940 J
C)
6,000 J
D)
5,880 J
Answers
the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s is 6,000 J. Option C is correct answer.
The kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s can be calculated by using the formula:
K.E = 1/2 mv²
Where, K.E = Kinetic energy of the objectm = Mass of the objectv = Velocity of the object
Putting the given values in the above formula:
K.E = 1/2 mv²K.E = 1/2 × 30 kg × (20 m/s)²K.E = 1/2 × 30 × 400K.E = 6000 joules
The correct answer is C.
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How do a neutron and a proton compare?
O
A. The proton has much greater mass.
O
B. The proton is farther from the nucleus.
O
C. They have opposite charges.
O
D. They are both found inside the nucleus.
Answers
\(\qquad\qquad\huge\underline{{\sf Answer}}\)
The Correct choice is : D
Neutrons and Protons are collectively known as Neucleons because they are found in nucleus of the cell and they have almost equal mass, [ but neutron has slightly greater mass than proton ]. also, Neutrons are neutral particle with no charge on them, where as protons have positive charge on them. making nucleus positively charged altogether ~
Answer:
Option D
Explanation:
Remember that neutrons and protons both are found inside the nucleus.Electrons wander around themProtons have positive chargeElectrons have negative chargeNeutrons are neutraldescribe 5 steps you would take when trouble shooting a test kit
Answers
Answer:
1. Information Gathering
2. Analysis and Planning.
3. Implementation of a solution.
4. Assessment of the effectiveness of the solution.
5. Documentation of the incident.
Calculate the net force on the particle q1.
Answers
Answer:
-12.1
Explanation:
i’m almost sure this is it, i’m checking my old answers
if not let me know and i’ll give you some more answers