Compare and contrast the reproduction and death stage of a cicada and ladybug.
Answers
Answer:
Larva and pupa is present in complete metamorphosis while nymph is present instead of larva and pupa in incomplete metamorphosis.
Explanation:
Complete metamorphosis has four stages i. e. egg, larva, pupa, and adult while the incomplete metamorphosis has three stages i. e. egg, nymph, and adult. Grasshopper, dragonfly, cicada and cockroach have incomplete metamorphosis while ladybug , housefly, butterfly and honeybee have complete metamorphosis. Both type of insects lay eggs and after hatching a baby insect comes out called larva. After sometime this larva transforms from immature to mature, this stage is known as pupa. After pupa, the insect converts into an adult which is ready for reproduction. Nymph is a stage that comes in place of larva and pupa in incomplete metamorphosis. in this stage, the insect is small in size and lack of wings but in adult stage the wings appear.
Related Questions
How are an electromagnetic wave’s wavelength and frequency related to the wave’s period of oscillation?.
Answers
discuss the shape of the voltage and current waveforms. which appears more sinusoidal and why would you expect it to be that way?
Answers
The voltage waveform is more sinusoidal than the current waveform.
This is because the voltage source is assumed to be an ideal source, which means that the voltage is supplied without loss or fluctuation while the current waveform is distorted due to the loads present in the circuit. When a voltage waveform is applied to a circuit with inductance and capacitance, the resulting current waveform will be distorted and will not be sinusoidal. The current waveform is affected by the presence of capacitance and inductance in the circuit, which cause the current to lag behind the voltage. The current waveform becomes more distorted as the load resistance increases.
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An arrow leaves a bow at 60 m/s at an angle of 30 degrees to the horizon.
60 m/s
30
Which best gives the total time of flight for the arrow before it returns to its original
height?
P.4C
Answers
Answer: 11
Explanation:
A projectile is launched from the back of a cart of mass m that is held at rest, as shown below (first image). At time t = 0, the projectile leaves the cart with speed vo at an angle θ above the horizontal. The projectile lands at point P. Assume that the starting height of the projectile is negligible compared to the maximum height reached by the projectile and the horizontal distance traveled.
(1) Derive an expression for the time tp at which the projectile reached point P. Express your answer in terms of vo, θ, and
physical constants, as appropriate.
(2) On the axes below (second image), sketch the horizontal component vx and the vertical component vy of the velocity of the projectile as
a function of time from t = 0 until t = tp. Explicitly label the vertical intercepts with algebraic expressions.
Answers
The vertical intercepts of the velocity components occur when the projectile is launched and when it hits the ground. At t = 0, vy = vo * sin(θ) and vx = vo * cos(θ). At t = tp, the projectile hits the ground and vy = 0.
To solve this problem, we can use the equations of motion for projectile motion. The horizontal distance traveled by the projectile can be found using the equation:
x = vo * cos(θ) * t
where x is the horizontal distance, vo is the initial speed, θ is the angle above the horizontal, and t is the time.
To find the time tp at which the projectile reaches point P, we need to find the time when the projectile hits the ground. We can use the vertical motion equation:
y = vo * sin(θ) * t - 1/2 * g * t^2
where y is the height of the projectile, g is the acceleration due to gravity, and t is the time.
At the maximum height of the projectile, the vertical velocity is zero. Using this condition, we can find the time of flight:
tp = 2 * vo * sin(θ) / g
To sketch the horizontal and vertical components of the velocity, we need to find the velocities as functions of time. The horizontal velocity is constant and is given by:
vx = vo * cos(θ)
The vertical velocity changes due to gravity and is given by:
vy = vo * sin(θ) - g * t
The vertical intercepts of the velocity components occur when the projectile is launched and when it hits the ground. At t = 0, vy = vo * sin(θ) and vx = vo * cos(θ). At t = tp, the projectile hits the ground and vy = 0.
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To derive the time at which the projectile reaches point P, we analyze the projectile's motion. The expression for tp is tp = vy0 / g + sqrt(2h / g). The graph of vx and vy as a function of time shows constant horizontal velocity and linearly changing vertical velocity.
Explanation:To derive the expression for the time at which the projectile reaches point P, we need to analyze the projectile's motion. Since the starting height is negligible, we can consider the motion in the horizontal and vertical directions independently. In the horizontal direction, the projectile moves at a constant velocity, so its horizontal component of velocity, vx, remains constant. In the vertical direction, the projectile experiences constant acceleration due to gravity, so its vertical component of velocity, vy, changes over time. The time tp can be found by equating the time it takes for the projectile to reach maximum height and the time it takes for the projectile to fall from maximum height to point P.
Using the equations of motion, we can derive the expression for tp:
Equation for the time taken to reach maximum height: t_max = vy0 / g, where vy0 is the initial vertical component of velocity.Equation for the time taken to fall from maximum height to point P: t_fall = sqrt(2h / g), where h is the maximum height reached by the projectile.Since t_max + t_fall = tp, we can substitute the equations and solve for tp: tp = vy0 / g + sqrt(2h / g).The graph of vx and vy as a function of time will help visualize the motion. From t = 0 to t = tp/2, vx remains constant at vo * cos(theta), and vy decreases linearly from vo * sin(theta) to 0. From t = tp/2 to t = tp, vx remains constant at vo * cos(theta), and vy increases linearly from 0 to -vo * sin(theta).
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A 7.00-ω resistor is dissipating 70.0 watts. what are the current through it and the potential difference across it?
Answers
The current through the resistor is 1.00 A, and the potential difference across it is 70.0 V.
Ohm's Law states that current (I) flowing through a resistor is equal to the potential difference (V) across the resistor divided by its resistance (R):
I = V / R
The power (P) dissipated by a resistor can be calculated using the formula:
P = V * I
Resistance (R) = 7.00 Ω
Power (P) = 70.0 W
We can re arrange Ohm's Law to solve the current:
I = P / V
Substituting the given values:
I = 70.0 W / V
Using the power formula, we can express the potential difference in terms of power and current:
P = V * I
V = P / I
Substituting the given values:
V = 70.0 W / I
We now have two equations:
I = 70.0 W / V
V = 70.0 W / I
To solve for the current and potential difference, we can substitute one equation into the other:
I = 70.0 W / (70.0 W / I)
I = 70.0 W * (I / 70.0 W)
I = I
This shows that the current (I) is independent of the potential difference (V) and is solely determined by the power (P). the power dissipated is 70.0 watts, the current flowing through the resistor is 1.00 A (ampere).
To find the potential difference, we can use the equation:
V = 70.0 W / I
V = 70.0 W / 1.00 A
V = 70.0 V (volts)
Therefore, the current through resistor is 1.00 A, and the potential difference across it is 70.0 V.
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which has more thermal energy and ice cube or an iceberg? and why?
Answers
Answer:
Yes.
Explanation:
If an iceberg is the same temperature on the outside as it is on the inside then it becomes water, just like an ice cube. Imagine if you made a huge ice cube and you core drilled it, it’s insides would be colder than it’s outsides. An iceberg is simply an extension of that.One could think of it as a thermal capacitor, or a huge cooler pac.An iceberg is a piece of a glacier which was formed by ancient snow. The weight of years of snow fuses the snow into ice. Gravity has moved it downhill until it was at the edge of ocean and cracked off under it’s own weight. Included along with ice, atmospheric dust, are many tiny air bubbles trapped when the snow fell.
2. How much power is required to do 200 J of work in 10 seconds?
Answers
Power = work / time
Power = 200J / 10 seconds
Power = 20 watts
When light is incident on a boundary between two mediums, it often slows
down or speeds up. When it does this, the path the light travels can change.
This is called:
A. diffraction
B. reflection.
c. translocation.
D. refraction
Answers
Answer:
the answer is
D.refraction
Highlight the correct answer.
A.) An object with more mass has more/less gravitational force than an object with a smaller mass.
B.) Objects that are closer together have more/less of a gravitational force between them than objects that are further apart.
Answers
The correct answer is B. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
In simpler terms, as objects get closer together, the gravitational force between them increases.
When the distance between two objects decreases, the denominator of the equation (distance squared) becomes smaller, resulting in a larger force. Conversely, when the distance increases, the denominator becomes larger, resulting in a smaller force.
It is important to note that the mass of an object does not directly affect the strength of the gravitational force between two objects. However, a higher mass will lead to a greater gravitational force when compared to a lower mass, but only because the force is being exerted on a more massive object. The mass of an individual object doesn't directly affect the gravitational force it experiences from another object. option B
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Deepti was looking at the wire used to light a bulb. She saw that inside the plastic covering, there were thin metallic wires. How do the metal and the plastic help?
A.The metal and the plastic together produce electricity.
B.The metal does not bend and helps to keep the plastic stiff.
C.The metal and the plastic allow electricity to flow through the wire easily.
D.The metal allows electricity to travel easily and the plastic prevents shocks.
Answers
C. The metal and the plastic allow electricity to flow through the wire easily.
What is the importance of metallic wire?A conductor is a material that allows electricity to flow through it easily, with little resistance. Conductors are typically made of metal, such as copper or aluminum, and are used in electrical wires to transmit electrical signals and power.
The thin metallic wires inside the plastic covering are usually made of a conductor, such as copper or aluminum, which allow electricity to flow through them easily. The plastic covering, or insulation, protects the metal wires from touching each other and short-circuiting, which can cause electrical hazards, such as fires or shocks. The plastic also helps to keep the metal wires in place and protected from physical damage.
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Q. What is the acceleration of this object? What is its initial velocity?
For acceleration, can we do the second derivative? I don't know how to do initial velocity.
Answers
Answer:
(1) - v(t) = 9.18t - 1.12
(2) - a(t) = 9.18 m/s²
Explanation:
We are given the position function, y(t) = 4.59t² - 1.12t + 0.03. We are asked to determine the following:
The velocity functionThe acceleration function\(\hrulefill\)
To find the velocity function simply take the derivative of the position function.
y'(t) = v(t) = 9.18t - 1.12
Using the graph we can find the object's initial velocity by pugging in t=0.220 s.
=> v(0.220) = 9.18(0.220) - 1.12
=> v(0.220) = 0.8996 m/s \(\hrulefill\)
To find the acceleration function either take two derivatives of the position function or one of the velocity function.
y''(t) = v'(t) = a(t) = 9.18 m/s²
Thus, the object is speeding up with constant acceleration.
Jonathan in his motorcycle is going 70 miles per hour. How long would he take to go to a city 200 miles away?
Answers
Answer:
28.57 hoursExplanation:
The time taken by the motorcycle to reach the city can be found by using the formula
\(t = \frac{d}{s} \\ \)
d is the distance
s is the speed
From the question
d = 200 miles
s = 70 miles / hour
We have
\(t = \frac{200}{7} \\ = 28.571428 \\ \)
We have the final answer as
28.57 hoursHope this helps you
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.
in a microscope of the type sown in the figurem the focal length of the objective is 5.81 cm and that of the eyeppiece is 8.1 the distance between lenses is 28.2 cm what is the tube length s
Answers
The tube length of the microscope is 16.6 cm. To find the tube length (s), we can use the equation:
1/s = 1/f_objective + 1/f_eyepiece - d/f_objective*f_eyepiece
where f_objective is the focal length of the objective lens, f_eyepiece is the focal length of the eyepiece, and d is the distance between the lenses.
Substituting the given values, we get:
1/s = 1/5.81 + 1/8.1 - (0.282)/(5.81*8.1)
Simplifying and solving for s, we get:
s = 16.6 cm
Therefore, the tube length of the microscope is 16.6 cm.
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how does the interstellar medium affect our view of most of the galaxy?
Answers
Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.
(hope this helps) :)
How do astronomers explain the energetic jets that come out of quasars and active galactic nuclei in opposite directions
Answers
Astronomers explain the energetic jets that come out of quasars and active galactic nuclei(AGN) in opposite directions in a way that the supermassive black holes' chaotic accretion discs "spit out" jets in directions perpendicular to the disc.
Quasar : A supermassive black hole with a mass between millions and tens of billions of solar masses that is fueled by an extraordinarily bright active galactic nucleus (AGN) and encircled by a gaseous accretion disc is known as a quasar.
An active galactic nucleus (AGN) is a compact area at the Centre of a galaxy that exhibits features that indicate the luminosity is not coming from stars and is substantially brighter than usual over at least some of the electromagnetic spectrum.
Hence, astronomers propose that the chaotic accretion discs of supermassive black holes "spit out" jets in directions perpendicular to the disc, explaining the intense jets that emerge from quasars and active galactic nuclei in different directions.
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In the absence of air resistance, why does the horizontal component of velocity for a projectile such as a
bullet remain constant while the vertical component changes?
Answers
Explanation:
The vertical velocity changes because gravity is what brings the ball downwards, since gravity is what cause acclereation in free fall, acclereatiin will make the velocity become more negative.
There is no force happening on the ball in the horinzontal direction so according to Newton 1st law, the ball will remain in constant velocity n the horinzotnal direction.
a rocket is launched vertically upward from earth's surface at a speed of 5.5 km/s k m / s . part a what is its maximum altitude?
Answers
The maximum altitude of the rocket is 1,542 km. The result is obtained by using the kinematical equation.
Kinematic EquationThere are 3 main kinematical equations. They are
vf = vi + gtvf² = vi² + 2ghh = vi t + ½gt²Where vf is the final velocity, vi is the initial velocity, g is the acceleration due to gravity, and h is the displacement.
We have initial velocity 5.5 km/s. The question is to find the maximum altitude.
Let's convert the initial velocity from km/s to m/s.
5.5 km/s = 5,500 m/s
In this case, at the maximum altitude, the final velocity is zero, vf = 0. While the acceleration due to gravity is g = -9.81 m/s².
We can use the second equation to get the maximum altitude, h
vf² = vi² + 2gh
0 = 5,500² - 2(9.81)h
30,250,000 = 19.62 h
h = 1,541,794 meters
h ≈ 1,542 km
Therefore, the maximum altitude the rocket will reach is approximately 1,542 km.
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Dawn is trying to find out how much weight she can push across the room. She is really trying to find her __________. A. flexibility B. muscular endurance C. cardiovascular fitness D. muscular strength Please select the best answer from the choices provided. A B C D
Answers
Answer:
D. muscular strength
Explanation:
Lifting any weight requires force to lift it. This force is the result of the muscular strength of the body. It is the muscular strength that determines the weight that a body can lift without any exhaustion. Muscular strength depends on the size of the muscular fibers and the nerves' ability. They help in activating the strength of the muscle. Lifting the objects and the ability to lift it are the outcome of the strength muscles have.
In the given situation, Dawn is trying to find her muscular strength.
Answer:
d
Explanation:
d
PLEASE HELP ASAP!!!!!
They are the outer planets
Answers
Answer:
B Neptune 4,501,000,000 km
C Saturn 1,424,600,000 km
D Uranus 2,873,550,000 km
18. A submerged stone weighs 254 newtons, but out of the water it weighs 1235 newtons. The density of the water is1000 kilograms per cubic meter. The volume of the stone is most nearly(a) 0.100 m^3(b) 0.206 m^3(c) 0.254 m^3(d) 1.24 m^3
Answers
ANSWER:
(a) 0.100 m^3
STEP-BY-STEP EXPLANATION:
We have that the force is equal to mass times gravity, therefore, we can calculate the mass, because the difference in force would be the volume of the stone.
Therefore
\(\begin{gathered} F=m\cdot a \\ m=\frac{F}{a} \\ m=\frac{1235-254}{9.8}=100.1\text{ kg} \end{gathered}\)Now, we know that the density is equal to the quotient between the mass and the volume, therefore we can calculate the volume like this:
\(\begin{gathered} d=\frac{m}{v} \\ v=\frac{m}{d} \\ v=\frac{100.1}{1000} \\ v=0.1001\cong0.100m^3 \end{gathered}\)Therefore the volume of the piece is 0.100 cubic meters.
What causes hot spot volcanoes to form?
Answers
Answer:
A volcanic "hotspot" is an area in the mantle from which heat rises as a thermal plume from deep in the Earth. High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes.
The dice in a backgammon set are cubes with each side measuring 10 mm. What is the volume of these dice
Answers
Answer: 1*10^3 mm^3
That’s it
Carefully place a prepared slide of diatoms on the stage, and focus using low power. What kind of specimen are you looking at
Answers
Under the low-power microscope, the kind of specimen Diatoms is Holotype.
What is Holotype Specimen?A solitary actual example of an organism known to have been utilized during the conventional portrayal of the species is known as a holotype.It is either the sole occurrence of this sort of actual model, however, it is explicitly recognized as the holotype.What are Diatoms?Diatom slides are often created by letting the suspension of diatoms settle out overnight on a coverslip, as explained below. It can take up to two days for this to disseminate the diatoms evenly on the coverslip, though.The frustule, a silica (hydrated silicon dioxide) cell wall, that surrounds diatoms is a distinctive aspect of their anatomy.To learn more about Diatoms refer to:
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A bicycle rides in a straight line at 1 km at 10
km/h and then another 1 km at 25 km/h
Answers
Answer:
17.5
Explanation:
1+1=2
2/2=1
10+25=35
35/2=17.5
A 100 kg box is on an incline of 60°
What is the frictional force if the coefficient of friction is .2?
Answers
If the coefficient of friction is.2, the frictional force is 100 N.
The resistive force of friction (Fr) divided by the normal or perpendicular force (N) pushing the objects together yields the coefficient of friction (fr), which is a numerical value. The formula fr = Fr/N serves as a representation of it.
F = N is the equation for frictional force. Let's use the 2-kg block of wood that is resting on a table to be pushed from rest as an example. The static friction coefficient is taken into account in this situation. The static coefficient of wood is 0.5.
Calculation:F = μN
F = 2 × 100 ×cos60°
F = 200 × 1/2
F = 100 N
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The voltage across the primary winding is 6000 v. if the primary winding has 50 coils and the secondary winding has 20 coils, what is the secondary voltage? 120 v 2400 v 15,000 v 120,000 v
Answers
if the primary winding has 50 coils and the secondary winding has 20 coils then the secondary voltage will be equal to 2400V
What is voltage?Voltage is defined as the potential difference which apply a force on the charge to flow in the circuit.
This is a question on transformer. A transformer is a device used to step up or step down current and voltage. It consists of the primary windings and secondary windings. Each windings possesses both coil and amount of voltage across each coil.
The transformer formula is
\(\dfrac{V_S}{V_P}=\dfrac{N_S}{N_P}\)
Where;
Vs is the voltage across the secondary coil
Vp is the voltage across the primary coil
Ns is the number of turn in the primary coil
Np is the number of turns in the primary coil.
According to the question,
Vs is unknown
Vp is 6000V
Ns is 20turns
Np is 50turns
Substituting the values in the formula given
\(\dfrac{V_S}{6000}=\dfrac{20}{50}\)
Vs = 2400V
Therefore the secondary voltage is 2400V
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Answer:
2400
Explanation:
edge 2022
A cheetah runs at 93km/he to the east. This describes the cheetah’s
A.) Displacement
B.) Instantaneous Speed
C.) Average Speed
D.) Average Velocity
Answers
what causes condensation on ac vents
Answers
Answer:
Condensation on AC vents occurs when warm, humid air comes into contact with the cool surfaces of the vents. This phenomenon is similar to what happens when water droplets form on the outside of a cold glass on a hot day. The main causes of condensation on AC vents are:
Explanation:
Temperature difference: Air conditioning systems lower the temperature of indoor spaces, creating a significant temperature difference between the cold AC vents and the surrounding air. When warm, humid air from the room comes into contact with the cold surface of the vents, the moisture in the air condenses into water droplets.
High humidity: Humidity refers to the amount of moisture present in the air. Higher humidity levels mean that the air is holding more moisture. When the indoor humidity is high, and the AC vents are cooler than the dew point temperature (the temperature at which air becomes saturated and condensation occurs), condensation is more likely to form on the vents.
Inadequate insulation: Poor insulation or improper installation of air conditioning ductwork can lead to condensation issues. If the cool air from the ducts escapes into unconditioned spaces, such as attics or crawl spaces, the temperature difference can cause condensation to form on the vents.
Vent blockage: Blocked or restricted vents can disrupt the airflow from the AC system, resulting in lower temperatures near the vents. This can increase the likelihood of condensation forming on the vent surfaces.
Improper AC sizing: If the air conditioning system is oversized for the space it is cooling, it may cool the air too quickly, leading to shorter cycles and less dehumidification. This can result in higher humidity levels and increased condensation on the vents.
Can u plz help me with my hw
Answers
Answer:
1) 4 x 25m = 100m
2) 0 because after 4 lengths, he's back at the starting block.
3) speed is distance over time so speed here is 100m/125s = 0.8m/s
4) ...
5) 100m / 1.25m/s = 80s
6.a) 100m / 0.5m/s = 200s
7.b) ... can't draw this now..