Answer:
Colon isn't a part of respiratory system
book with a mass of 4.46 kg is resting on a horizontal tabletop. What is the magnitude of the normal forcing acting on the book
The magnitude of the normal force acting on the book is 43.708 N.
The magnitude of the normal force acting on the book can be calculated using Newton's second law and the concept of equilibrium.
In this case, since the book is resting on a horizontal tabletop, there is no vertical acceleration. Therefore, the net force in the vertical direction must be zero.
The force acting in the vertical direction is the weight of the book, given by:
Weight = mass * acceleration due to gravity
Weight = 4.46 kg * 9.8 m/s^2
Weight = 43.708 N
The normal force is equal in magnitude and opposite in direction to the weight of the book. Therefore, the magnitude of the normal force is also 43.708 N.
Hence, the magnitude of the normal force acting on the book is 43.708 N.
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two wheels with the same diameter are placed next to each other. the position of one wheel is fixed while the second wheel revolves around the fixed wheel. how many complete turns does the second wheel make after moving one complete turn around the fixed wheel?
When the second wheel revolves around the fixed wheel once, it will make one complete turn. The number of complete turns the second wheel makes around itself depends on the diameter of the fixed wheel in relation to its own diameter.
Let's consider two scenarios:
1. If the diameter of the fixed wheel is equal to the diameter of the second wheel, then the second wheel will also make one complete turn around itself. This is because when the two wheels have the same diameter, their circumferences are the same length, and as the second wheel completes one full revolution around the fixed wheel, it also completes one full revolution around itself.
2. If the diameter of the fixed wheel is different from the diameter of the second wheel, the number of complete turns the second wheel makes around itself will be different. Let's assume that the diameter of the fixed wheel is twice the diameter of the second wheel. In this case, as the second wheel completes one full revolution around the fixed wheel, it will make two complete turns around itself. This is because for each revolution around the fixed wheel, the second wheel will travel twice the distance along its own circumference.
In summary, if the two wheels have the same diameter, the second wheel will make one complete turn around itself. However, if the diameter of the fixed wheel is different from the diameter of the second wheel, the number of complete turns the second wheel makes around itself will depend on the ratio of their diameters.
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a roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. whats the acceleration
Answer:
vi=6m/s
vf=70 m/s
t=4s
a=vf-vi/t=16m/s2
Explanation:
The acceleration of the roller coaster is 16 m/s²
The given parameters;
initial velocity of the roller coaster, u = 6 m/s
final velocity of the roller coaster , v = 70 m/s
time of the motion of the roller coaster, t = 4 seconds
The acceleration of the roller coaster is calculated as the change in the velocity per change in time of motion.
\(a = \frac{v- u}{t} \\\\a = \frac{70-6.0}{4} \\\\a = 16 \ m/s^2\)
Thus, the acceleration of the roller coaster is 16 m/s²
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38.A student heard the echo of his voice from a nearby solid object after 2se. How far away
is the solid object? The speed of sound in air is 170m/s.
A. 85m
B. 170m
C. 300m
D. 340m
Answer:
B. 170m
Question explained in the photo attached
Hope it helped : )
What is the relationship between changes in air pressure in wind speeds, answers, when a high and low pressure, air mass or close together. It moves slowly from high to low pressure, when I have high and low pressure MS are far apart and is quickly from low to high pressure, when a high and a low pressure area, so far apart, and move slowly from high to low pressure, when a high in a low
Answer:
Explanation:
Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.
Answer:
points are needed
Explanation:
Infrared radiation is part of a 'family' of waves that also includes visible light and radio waves. What name is given to this 'family'? Give the full name, not the abbreviation.
Infrared radiation is a part of electromagnetic waves,which also include the visible light and radio waves.
What are electromagnetic waves?The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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https://evidence that language is a social process that must be learned comes from the fact that when deaf children find themselves in an environment where there are no people who speak or use sign language, they
Evidence that language is a social process that must be learned comes from the fact that when deaf children find themselves in an environment where there are no people who speak or use sign language, they are unable to develop language skills spontaneously.
Language acquisition requires social interaction and exposure to language input from others who are proficient in a particular language or sign language. Deaf children who do not have access to a signing community or language input struggle to develop linguistic skills on their own. This supports the notion that language is a social process that must be learned through interaction with others. Without such social interaction, deaf children may experience language deprivation and face challenges in acquiring a natural language.
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a piece of unpainted porous wood barely floats in an open container partly filled with water. the container is then sealed and pressurized above atmospheric pressure. what happens to the wood? it rises in the water. it sinks lower in the water. it remains at the same level. correct: your answer is correct. explain your answer.
The wood will sink lower in the water when the container is sealed and pressurized above atmospheric pressure.
When the container is sealed and pressurized above atmospheric pressure, the pressure inside the container increases. According to Boyle's Law, the volume of a gas is inversely proportional to its pressure at a constant temperature. This means that as the pressure inside the container increases, the volume of the air trapped in the pores of the wood decreases.
This results in a decrease in the buoyant force acting on the wood, which causes the wood to sink lower in the water. Therefore, the correct answer is "it sinks lower in the water." This phenomenon is also observed in the diving and submarine industry, where pressure changes affect the buoyancy of submerged objects.
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Full Question: a piece of unpainted porous wood barely floats in an open container partly filled with water. the container is then sealed and pressurized above atmospheric pressure. what happens to the wood?
it rises in the water. it sinks lower in the water. it remains at the same level.correct: your answer is correct. explain your answer.
An ant is on the pendulum bob of a clock. What would be its displacement in one time period?
Answer: the displacement is 0
Explanation:
Displacement is defined as the difference between the final position and the initial position.
now, one time period is defined as the time that the pendulum needs to do a full cicle (so after one time period, the position of the pendulum returns to the same place) this means that the final position and the initial position is the same, then the displacement is 0.
galileo classified qualities into primary and secondary. he thought the primary are quantifiable and real in the world and that secondary are not quantifiable and not real in the world. which are primary?
Galileo classifies qualities into primary and secondary qualities. Primary qualities are those that are inherent in an object and cannot be changed.
key characteristics include, An object's mass, which defines its weight and measures its resistance to acceleration, is the total amount of matter in the object.
The length, width, and height of an object establish its size or dimensions, which in turn determine its volume.
Shape: An object's form or configuration, which influences how it looks and how it is outlined.
Motion is the act of an item moving, including its speed, acceleration, and direction.
Location: An object's coordinates can be used to define its position in space.
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Which of the following statement/s is/are true? Check all that apply. Jupiter's Great Red Spot is in the southern hemisphere of the planet The fastest wind speed recorded in our solar system is on the dwarf planet Pluto Neptune's Great dark spot is in the northern hemisphere of the planet Water geyser is located on the South Pole of Saturn's Moon Enceladus The Hexagon hurricane is on the North Pole of the planet Uranus
The true statements are:Jupiter's Great Red Spot is in the southern hemisphere.The fastest wind speed recorded in our solar system is on Neptune.
Among the given statements, only two are true. Jupiter's Great Red Spot, a massive storm, is indeed located in the southern hemisphere of the planet. The Great Red Spot is a prominent feature on Jupiter, visible as a giant swirling storm system. On the other hand, the fastest wind speed recorded in our solar system, reaching speeds of up to 2,100 kilometers per hour (1,300 miles per hour), is found on Neptune.
The strong winds on Neptune contribute to its dynamic atmosphere and the formation of features like the Great Dark Spot. The remaining statements about Pluto, Saturn's moon Enceladus, and Uranus are not true according to our current understanding.
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A young hockey player stands at rest on the ice holding a 1.3 kg helmet. The player tosses the helmet directly in front of him with a speed of 6.5 m/s and recoils with a speed of 0.25 m/s. what is the mass of the hockey player?
Answer: His mass is 7.33
Explanation: Try this I tryed if it doesn't work.
Answer: a direction 11 deegrees above the horizontal, and recoils with a speed of
0.25 Find the mass of the hockey player.
Explanation:
If I ride my bike to school, and I have to go up hills and turn corners, would my speed from home to school be measured with instantaneous or average speed?
Answer:
Average speed I think it's correct
Pilots depend on the precision of systems to guide them when they have limited visibility.
Pilots rely on accurate systems to navigate in conditions with reduced visibility. These systems play a crucial role in ensuring the safety and precision of flight operations.
Pilots largely rely on a variety of onboard equipment and instruments to advise them in scenarios like low visibility weather or nighttime flight. These systems include, among other things, devices like altimeters, gyroscopes, and autopilot systems. They help pilots retain situational awareness and accurately navigate by providing vital information regarding the position, altitude, speed, and direction of the aircraft. Furthermore, cutting-edge technology like GPS (Global Positioning System) that provide real-time positioning information further improve navigational capabilities.
These systems must be extremely precise to guarantee that the aircraft follows the intended flight route and avoids potential hazards or collisions with other aircraft. Pilots must rely on these devices to maintain the necessary spacing from other aircraft and to carry out safe takeoffs, landings, and manoeuvres when there is little visibility, such as during fog or dense clouds.
In conclusion, when vision is poor, pilots heavily rely on precision systems to navigate safely and accurately. These technologies offer important information and direction, enabling pilots to maintain control and make wise choices in difficult circumstances.
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De acuerdo al calendario ecológico 2020, escriba cuanto CO2 produce el Ecuador y en un resumen máximo de 7 líneas, determine porque son importante los humedales en la biodiversidad.
Answer:
43,919.66 Kilotones de Co2 en 2016.
Explicación:
Ecuador produce 43,919.66 Kilotones de Co2 en 2016. Las tierras húmedas son muy importantes para la biodiversidad porque proporcionan hábitat a millones de animales. Alrededor del 35 por ciento de todas las especies amenazadas y en peligro vive en estas tierras húmedas. Estas tierras húmedas son altamente productivas y tienen la capacidad de mejorar la calidad del agua, prevenir la degradación del suelo y proporcionar alimentos a los animales que viven en estas tierras húmedas.
Would talking to plants positively or negative affect how they grow?
Answer:
u go to vanguard? in 6th grade
Answer:
is it correct ? sorry of it is incorrec
he higher the relative humidity, the __________ vapor pressure gradient between the skin and the environment.
The higher the relative humidity, the lower the vapor pressure gradient between the skin and the environment.
The relative humidity is a measure of the amount of moisture in the air compared to the maximum amount it can hold at a specific temperature. When the relative humidity is high, it means the air is already saturated with moisture, leaving less room for additional evaporation. As a result, the vapor pressure gradient between the skin and the environment decreases. In other words, there is less of a driving force for moisture to evaporate from the skin into the surrounding air. Conversely, when the relative humidity is low, the air has a greater capacity to hold moisture, creating a larger vapor pressure gradient and promoting faster evaporation from the skin.
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The screens show two sound waves that last the same amount of time. Which wave has a higher frequency? Explain your answer
Answer:
Wave 1
Explanation:
Its a High frequency waves the high waves are closer to each other thme the lower ones
How is muscular strength calculated?
Muscle strength is measured by estimating a person's one repetition maximum (1RM).
1RM is a measurement of the greatest load (in kilograms) that one can move means it can be lifted, pushed, or pulled once without failure or injury.
1RM is calculated by counting the maximum number of exercises that you can do in repetition by the use of a load that is just less than the maximum amount that can be moved. This number is known as the repetitions to fatigue (RTF) – you are required to stop counting the repetitions when you feel you can no longer do the exercise in a proper way or when you slow down or can't keep a steady pace.
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A car traveled 1 hour at a contanst velocity of 65 mph west with cruise control. The acceleration is
even though you should be careful in all measurements, which will create a bigger error in the calculated volume: an error in the diameter or an error in the length of the cylinder?
Nevertheless, you should exercise caution while taking any measurements because either an inaccuracy in the cylinder's diameter or its length will result in a larger error in the volume that is predicted.
How is diameter calculated in its entirety?Instance and Formula
2r d = diameter
r = radius
Thus, the radius multiplied by the diameter gives us the diameter formula: diameter = 2. D = 2r is an abbreviated form of this equation. However, if we are acquainted with circle's other dimensions—namely, its radius, circumference, or area—calculating the circle's diameter is simple.
Our approach to handling doubts and mistakes is to reduce them while also being honest regarding them by disclosing them honestly. If your data collection approach and method were correct, justified, and all potential sources of error were covered, you would never lose points for citing a significant final uncertainty.
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A wave is moving at 300m/s and has a frequency of 25Hz, what is the wavelength?
Answer:
12 metre
Explanation:
Wavelength = Velocity / Frequency
Wavelength = 300m/s / 25 Hz
Wavelength = 12 metre
ten different uses for solar energy?
Answer:
for your computer, refridgerator, stove, car, lights, oven, microwave, electronic chargers, wi-fi router, and fans
Explanation:
also solar energy will save the earth from being inhabitable
hope this helped!!
A car decelerates uniformly from 24 m/s to 18 m/s in 3.0 seconds. How far does it travel during this time?
Distance travelled will be = 63 m
What is equation of motion?
These are the equations that describe the behavior of a physical system in terms of its motion as a function of time .
Given : u = 24 m/s
v= 18 m/s
t = 3sec
using equation of motion : v = u + at
18 = 24 + a*3
-6 = 3a
a = -2 m/s^2
using equation of motion : s = u t + 1/2 a (t^2)
s = 24 * 3 + 1/2 * (-2)(9)
s = 63 m
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PLEASE HELP!!
A pendulum swings back and forth 24 times in 8 seconds. What is its period? What is its frequency? Make sure to include your work and units on your answers.
The time period is 0.3 s and frequency is 3 Hz
Step 1 :
Given:
No. of cycles N = 24
Total time take t = 8 s
Step 1 : Calculating the frequency:
The frequency of a wave or oscillation is defined as the number of cycles or completed alternations per unit time.
f = N/t
f = 24/8
f = 3 Hz
Step 2: Calculating the time period:
Frequency and time period are inversely proportional.
The amount of time it takes for something to complete one oscillation is called its time period.
Time period = 1/Frequency
Time period = 1/3 = 0.3 s
So, the time period is 0.3 s and frequency is 3 Hz.
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TRUE/FALSE. a recently discovered extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth.
The acceleration of free fall on the planet is given by 39.2 m/s².
What is the acceleration of free fall?The acceleration of free fall is the acceleration at which a body falling freely experiences the gravitational pull of a single planet. It is also known as a gravitational acceleration.
Value of the acceleration of free fall on earth is 9.8 m/s².
The formula of acceleration of free fall on any planet is given by:
g₁ = GM/R²
As the extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth, the acceleration of free fall on any planet is given by:
g₁ = GM/R² = 16GMe/(2Re)² = 4 GMe/Re = 4g = 4× 9.8 m/s² = 39.2 m/s² .
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A circuit with a battery, a 14 Ω resistor, and a 17 Ω resistor, in parallel. The total current is the system is 2.8 A. What is the voltage of the battery?
Given data:
* The total current in the system is I = 2.8 A.
* The resistance of resistors connected in parallel is,
\(\begin{gathered} R_1=14\text{ ohm} \\ R_2=17\text{ ohm} \end{gathered}\)Solution:
The equivalent resistance of the system is,
\(\frac{1}{R_{eq}}=\frac{1}{R_1}+\frac{1}{R_2}\)Substituting the known values,
\(\begin{gathered} \frac{1}{R_{eq}}=\frac{1}{14}+\frac{1}{17} \\ \frac{1}{R_{eq}}=\frac{17+14}{14\times17} \\ R_{eq}=\frac{14\times17}{17+14} \\ R_{eq}=7.68\text{ ohm} \end{gathered}\)According to Ohm's law, the voltage across the battery in terms of the current and equivalent resistance is,
\(\begin{gathered} V=IR_{eq} \\ V=2.8\times7.68 \\ V=21.5\text{ volts} \end{gathered}\)Thus, the voltage across the battery is 21.5 volts.
In short-track speed skating, the track has straight sections and semicircles 16 mstudent submitted image, transcription available belowin diameter. Assume that a 64kgstudent submitted image, transcription available belowskater goes around the turn at a constant 11m/s\;m/s.
Part A
What is the horizontal force on the skater?
part B
What is the ratio of this force to the skater's weight?
Part A: The horizontal force on the skater is approximately 352 N.
Part B: The ratio of this force to the skater's weight is approximately 5.5.
Part A: To determine the horizontal force on the skater, we need to consider the centripetal force acting towards the center of the semicircle. The centripetal force is given by the equation Fc = (m * v²) / r, where Fc represents the centripetal force, m is the mass of the skater, v is the velocity, and r is the radius of the semicircle. The radius of the semicircle is half the diameter, so r = 16 m / 2 = 8 m. Substituting the values, we get Fc = (64 kg * (11 m/s)²) / 8 m ≈ 352 N.
Part B: The weight of an object can be calculated using the equation W = m * g, where W represents weight, m is the mass, and g is the acceleration due to gravity. Substituting the given mass of the skater (64 kg) and the standard value of acceleration due to gravity (approximately 9.8 m/s²), we get W = 64 kg * 9.8 m/s² ≈ 627 N. The ratio of the horizontal force (Fc) to the weight (W) is Fc / W ≈ 352 N / 627 N ≈ 5.5.
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Standard solar panels transform 3,600,000 J of input light energy into 720,000 J of useful electrical energy. The new solar panels that mimic butterfly wings are thought to have double the energy efficiency.
Calculate the energy efficiency of the new solar panel improved through biomimicry.
Answer:
5
Explanation:
we divide 3600000J by 720,000J
and after that the answer will be 5
3600,000J
---------------
720,000J
=5answer
The energy efficiency of the new solar panel improved through biomimicry would be 40%
What is solar energy?
The energy transferred from the Sun in the form of electromagnetic radiation is known as the solar energy
It can be used as the thermal energy for various life purposes as well as for the electricity conversion with the help of solar photovoltaic cells
The solar energy efficiency is the ratio of total electrical Energy converted to the total heat energy received from the solar photovoltaic panel energy-efficient see depend upon the area of the solar panel and the design of solar panel.
Solar panel efficiency = electrical energy /thermal energy received
As per the given problem standard solar panels transform 360 000 joules of input light energy into 720000 of useful electrical energy
The efficiency of solar panel = 720000/3600000
=0.20
In percentage terms the solar panel efficiency would be 20%
As given in the problem that new solar panels that mimic butterfly wings are thought to have double the energy-efficiency
The efficiency of solar panel = 1440000/3600000
=0.40
Hence,the efficiency of the new solar panels improve through biomimicry would be 40%
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For all three titrations for experiment #1 list the total volume of naoh used to reach the end point and calculate the concentration of sodium hydroxide. What was the mass of benzoic acid used for each titration? what is the average value of sodium hydroxide?.
0.03M is the concentration of sodium hydroxide.
Here from calculation concentration of NaOH -
100×0.019/ 20 = .095 M
For acetic acid-
Volume acid used, V1= 25 ml
Concentration of acetic acid N1= ?
Volume of NaOH used, V2 = 8.99 ml
Concentration of NaOH used, N2= .095 M
From N1×V1= N2×V2
N1 = N2×V2 / V1
N1 = .095 × 8.99/25
N1 = 0.03M
concentration is the quantity of a material in a certain area. The ratio of the solute in a solution to the solvent or whole solution is another way to define concentration. In order to indicate concentration, mass per unit volume is typically used. The solute concentration can, however, alternatively be stated in moles or volumetric units. Concentration may be expressed as per unit mass rather than volume. Although concentration is often used to describe chemical solutions, it may be computed for any combination.
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