which is the correct relationship among pressure, flow, and resistance?
Answers
Answer:
Flow is proportional to change in pressure and inversely proportional to resistance.
Related Questions
A girl and a boy pulled horizontally on ropes attached to a 20 kg box and made it to slide over a concrete surface (uk=0.8). The angle between two ropes is 900. a. Sketch a the free-body diagram where forces exerted by both the girl and the boy are equal. b. Solve for the kinetic friction exerted by the surface on the box. c. Solve for the forces exerted by both the girl and the boy when the box slides at constant velocity. d. Solve for the net force acted on the box, and its acceleration, if the boy and the girl both applied 300 N force to the box. e. Identify at least 5 action-reaction pairs that you may think possible in this problem
Answers
Answer:
:DDDDD thanks foooooooor joinin'
Explanation:
draw a figure of a simple pendulum explain its amplitude and effective length ?
Answers
Answer:
Explanation:
A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.
In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.
Amplitude:
The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."
Effective Length:
The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."
It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.
Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.
Select the equation of the line parallel to y = -4x - 6 that passes through the point (1, 2).
O y= 4x-4
O y= 4x+6
O y= 4x+6
O None of the other answers are correct
O y=4x-4
Answers
A pitcher throws a softball
Answers
Answer:
Did you forget the answers
Explanation:
if so leave in comments and i will try to figure out
Answer:
what is the question and the answers??
(Ecology) Food Chain lab Gizmo:
Before you interact with the simulation, what are your expecations? How will the food chain be effected if one organisim's population is altered? In your response, select one organisim (grass, rabbit, snake, hawk) and give a 3 sentence response on how you think a change in population of this organisim will impact the rest of the food chain.
Answers
Answer:
If the population of rabbits was altered then the food chain would be affected because if the population decreased then the animals that prey on rabbits wouldn't have as much food as they used to so the predators of the rabbits would decrease. If the population increased then the animals that prey on rabbits would increase. Overall, if rabbits had a change in population then the food chain would become effected, because if rabbits decrease then their predators decrease in population as well, the same goes for an increase in population.
(hope this helped!)
HELP plz ;)
The law of universal gravitation is an inverse square law in regards to distance. Which of these statements best describes this law?
(A )If the distance increases by some factor, the force will decrease by the square of that factor.
(B) If the distance increases by some factor, the force will decrease by the same factor.
(C) If the distance increases by some factor, the force will increase by the square of that factor.
(D) If the distance increases by some factor, the force will increase by the same factor.
Answers
Answer:
C
Explanation:
(C) If the distance increases by some factor, the force will increase by the square of that factor.
what image that is produced when the object is placed between the focal point and the lens. your statement must contain three characteristics (i.e., type, orientation, size, etc.) about the image to receive full credit. (10 points)
Answers
When the object is placed between the focal point and a convex lens, the image it produces contains these characteristics:
MagnifiedVirtualUprightA convex lens (converging lens) is a type of lens that is thicker at the center and thinner at the edges. It bends light from distant objects inward toward a point (focal point). A convex lens is generally used to correct farsightedness.
There's three rules for the ray path passing through convex lens
The ray coming parallel to the axis converged on the focus after passing the lens.The ray coming passing the focus becomes parallel to the axis after passing the lens.The ray that passes through the center of the lens goes straight without any direction change.When those rules is applied to know how the image is produced when an object is placed between the focal point and the lens, you'd find out that the image produced is virtual (located on the same side as the object), upright, and magnified.
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Two cars crash in a head-on collision and come to a stop. The crash analysts created the data table
below based on their observations from the scene. Based on their findings, what can be concluded
about the impact forces experienced by each vehicle?
Vehicle A
Vehicle B
Impact time
0.01 sec
0.01 sec
Mass of vehicle
3000kg
1000kg
velocity before impact
10 m/s
- 30 m/s
The impact force for Vehicle A was the same as the impact force for Vehicle B
The impact force for Vehicle A was greater than the impact force for Vehicle B
The impact force for Vehicle A was equal and opposite to the impact force for Vehicle B
The impact force for Vehicle A was less than the impact force for Vehicle B
Answers
The impact force for vehicle A was equal and opposite to the impact force for vehicle B.
The given parameters;
Vehicle A:
impact time of vehicle A, t = 0.01 smass of vehicle A, m = 3000 kgvelocity of vehicle A before impact, v = 10 m/sVehicle B:
impact time of vehicle A, t = 0.01 smass of vehicle A, m = 1000 kgvelocity of vehicle A before impact, v = -30 m/sThe impact force for vehicle A is calculated as follows;
\(F = ma = \frac{mv}{t} = \frac{3000 \times 10}{0.01} = 3,000,000 \ N\)
The impact force for vehicle B is calculated as follows;
\(F = ma = \frac{mv}{t} = \frac{1000 \times -30}{0.01} = - 3,000,000 \ N\)
Thus, we can conclude that the impact force for vehicle A was equal and opposite to the impact force for vehicle B.
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5 Select the correct answer. A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle? A. The average speed is 2.5 meters/second, and the average velocity is 2.5 meters/second east. B. The average speed is 0 meters/second, and the average velocity is 2.5 meters/second east. C. The average speed and average velocity are both 0 meters/second. D. The average speed is 2.5 meters/second, and the average velocity is 0 meters/second.
Answers
D. The average speed is 2.5 m/s and the average velocity of the bicycle is 0 m/s east.
What is average speed?
The average speed of an object is the ratio of total distance to total time of motion of the object.
average speed = total distance traveled / total time taken
average speed = (150 m + 150 m) / (2 mins x 60s/min)
average speed = (300 m) / (120 s)
average speed = 2.5 m/s
What is average velocity?The average velocity of an object is the ratio of change in displacement to change in time of motion.
v = Δx/t
v = (150 m - 150 m) / (120 s)
v = 0 m/s
Thus, the average speed is 2.5 m/s and the average velocity of the bicycle is 0 m/s east.
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When two oceanic plate boundaries meet, this crustal feature forms?
A)
sea floor spreading
B)
volcanic island arc
C)
plate tectonics
Answers
1. two protons are held a distance d apart. the electrostatic force and the gravitational force that one proton exerts on the other are fe and fg, respectively. compare the magnitudes and directions of these forces using calculations to support your answer.
Answers
The electrostatic force between like charges (such as two protons) is repulsive, meaning it acts in the opposite direction to the displacement.
By calculating the magnitudes and considering the direction of the forces, you can compare Fe and Fg and determine their relationship.
To compare the magnitudes and directions of the electrostatic force (Fe) and the gravitational force (Fg) between two protons, we can use the equations for these forces and apply the appropriate values.
The electrostatic force between two charged particles is given by Coulomb's Law:
Fe = k * (q1 * q2) / r^2
where k is the electrostatic constant (k ≈ 9 × 10^9 N·m^2/C^2), q1 and q2 are the charges , and r is the distance between the particles.
The gravitational force between two objects is given by Newton's Law of Universal Gravitation:
Fg = G * (m1 * m2) / r^2
where G is the gravitational constant (G ≈ 6.67 × 10^-11 N·m^2/kg^2), m1 and m2 are the masses and r is the distance between the particles.
Comparing the magnitudes: The masses and charges of the protons are the same, the magnitudes of Fe and Fg will depend on the respective constants and the distance between the protons.
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Object A moves toward Object B. Object B has twice the mass of Object A but is not moving. After the impact, the objects lock together in a perfectly inelastic collision. What is the fraction of the initial Kinetic Energy that remains?
Answers
Answer:
I mean its probably a magnet so look at the fraction of the initial Kinetic Energy of magnets
Explanation:
Describe how a student should carry out an experiment to determine the specific heat capacity of water.
Answers
Answer:
Use an insulated beaker full of water. The insulation reduces heat loss. Use a top pan balance to measure the mass of the empty beaker and then the beaker and water. Calculate the mass of the water by subtracting. Measure the temperature of the water before heating using a thermometer. Use a heater with an ammeter connected in series to measure the current in the heater and a voltmeter in parallel with the heater to measure the pd. Record the time the heater is on and measure the end temperature of the water. Use E = I × V × t to determine energy supplied to the Water. Use ΔE = m × c × ΔΘ to determine the specific heat capacity of the water.
Thom reads an article on the internet that that claims some lakes on Saturn are contain frozen methane. He reads that there is methane on Neptune, too. Which sentence best describes data that would suggest methane is frozen on Neptune?
a
Neptune's atmosphere has more methane than Saturn's.
b
Neptune's mass is less than Saturn's.
c
Neptune's surface temperature is colder than Saturn's.
d
Neptune's distance from the Sun is greater than Saturn's.
Answers
Answer: Neptune's distance from the Sun is greater than Saturn's.
Explanation:
The sentence that best describes data that would suggest methane is frozen on Neptune is that Neptune's distance from the Sun is greater than Saturn's.
Since Neptune is farther away from the Sun than Saturn, it implies that it has a colder temperature than Saturn and thus would suggest that methane is frozen on Neptune.
The apparent path of the Sun, relative to the stars on the celestial sphere, over the course of a year. It is the orbit of the earth extended to the celestial sphere is called?
Answers
The apparent path of the Sun, relative to the stars on the celestial sphere, over the course of a year. It is the orbit of the earth extended to the celestial sphere is called ecliptic.
The celestial sphere is an imaginary sphere that surrounds the Earth, used by astronomers to describe the positions and movements of celestial objects such as stars, planets, and galaxies. The concept of the celestial sphere was introduced by ancient Greek astronomers, who believed that the stars were fixed on a giant sphere that surrounded the Earth.
This sphere was thought to rotate around the Earth, creating the illusion of the stars moving across the sky. The celestial sphere is divided into 88 constellations, each containing stars that are visible from Earth. The celestial sphere has several important reference points, such as the celestial equator, which is the projection of Earth's equator onto the sphere, and the ecliptic, which is the path of the Sun across the sky throughout the year.
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An additional 4.0 kg block is now attached to the top of the original block and again, the composite block (8.0 kg total) begins at rest. A 22 N push is now applied. During the segment of time while this push is applied, the surface below applies a ________ friction force of magnitude ____ Newtons.
Answers
Given that a composite block (8.0 kg total) begins at rest. A 22 N push is now applied. During the segment of time while this push is applied, the surface below applies a static friction force of magnitude 22 Newtons.
The following explanation justifies the answer. There are two types of frictional forces that exist between the surfaces in contact, namely:
1. Static Friction
2. Kinetic Friction
Now, when the block is at rest, the force of static friction is experienced by the block and the surface in contact. Static friction is defined as the force that opposes the relative motion between the surfaces in contact when the object is at rest. The magnitude of the static friction is equal to or less than the applied force that is being applied to the object.For an object to be at rest, the force of static friction should be equal to the force applied. If the force applied is more than the maximum static friction, then the object starts moving. Mathematically, the force of static friction is expressed as:
fs ≤ μsN
where
fs = force of static friction
μs = coefficient of static friction
N = normal force exerted by the surface in contact
The normal force is the force exerted by the surface in the vertical direction. It is equal to the weight of the object that is in contact with the surface.Now, when the 22 N push is applied to the composite block, the surface below applies a force of static friction that opposes the motion of the block. As the block is at rest, the force of static friction is equal to the applied force.
Thus, the surface below applies a static friction force of magnitude 22 Newtons. Hence, option C is correct.
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how far away is a train if you see the steam from is nozzle 4.5 seconds
before you hear its sound?(take speed of sound as 331 m/sec)
Answers
Answer:
Distance = 1489.5 meters
Explanation:
Given the following data;
Time = 4.5 secondsSpeed of sound = 331 m/sTo find how far away is the train;
Mathematically, the distance of an object is calculated using the formula;
Distance = speed * time
Distance = 331 * 4.5
Distance = 1489.5 meters
a ball is thrown horizontally from a cliff. identify which of the following statements about the ball is/are correct.
Answers
The correct statement is the vertical velocity of the ball increases as it falls.
I only is the correct option
What is velocity?Velocity can be described as the rate of change of the object's position with respect to a frame of reference and time.
If a ball is thrown horizontally from a cliff, the vertical velocity of the ball increases as it falls.
The Vertical velocity of an object is its speed and direction on the vertical plane.
A Vertical velocity is a specific form of velocity because it is constantly impacted by gravity's acceleration in the vertical direction and plane.
It is expressed as V =\(V_{o}\) -gt
where v = velocity
\(V_{o}\)= initial velocity
g = acceleration due to gravity
t= time
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2. At 6:00 AM a hopital ued it cyclotron to make 1 milligram of the iotope fluorine-18 for ue a a diagnotic tool with it PET canner. The half-life of F-18 i 1. 8 hour. How much F-18 i left at 3:00 PM? At midnight? Should the hopital plan to make more F-18 the next morning?
Answers
Cyclotron to make 1 milligram of the isotope fluorine-18 for use a a diagnostic tool with it PET scanner. It seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.
The half-life of F-18 is 1.8 hours, so after 1.8 hours, half of the original amount of F-18 will remain. After 3.6 hours, a quarter of the original amount will remain, and so on.
At 3:00 PM (9 hours after the F-18 was made), the hospital will have
= 1/2^(9/1.8)
= 1/2^5
= 1/32
= approximately 0.03125 milligrams of F-18 remaining.
At midnight (18 hours after the F-18 was made), the hospital will have
= 1/2^(18/1.8)
= 1/2^10
= 1/1024
= approximately 0.0009765625 milligrams of F-18 remaining.
While using cyclotron, based on these calculations, it seems that the hospital should plan to make more F-18 the next morning, as the amount remaining at midnight is very small.
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riddle :what month of the year has 28 days ?
Answers
Answer: all of them lol
Explanation:
Answer:
all of them because they either have 28 days or more
Explanation:
Which of the following is an application where heat from electricity is a desired outcome?
I. Electric clothes dryer
II. Iron
III. Space heater
IV. Toaster
V. Water pump
Answers
Space heaters are the only application on the list where heat from electricity is the desired outcome. They are a convenient and efficient way to warm up a specific area or room, especially during cold weather.
The application where heat from electricity is a desired outcome is Space heater. Space heaters are designed to generate heat from electricity and warm up a specific area or room. They work by passing an electrical current through a resistive element, such as a coil of wire, which converts electrical energy into heat energy. The heat is then transferred to the surrounding air, warming up the room.
Electric clothes dryers, irons, toasters, and water pumps all use electricity to perform their respective functions, but heat is not the desired outcome. Electric clothes dryers use electricity to rotate a drum and create hot air to dry clothes. Irons use electricity to heat up a metal plate and smooth out wrinkles in clothes. Toasters use electricity to heat up metal wires and toast bread. Water pumps use electricity to circulate water through pipes or hoses.
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Please solve with explanation (20 points)
Answers
If there are on average 55 grains of sand per mm³, then there would be a total of 5500000000 grains of sand if the sandbox is full.
What is multiplication?Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis.
As given in the problem, a child's sandbox is 1.0 meter wide, 1.0 meter long, and 10.0 cm deep,
The volume of the sandbox = length ×width ×depth
= 1000×1000×100
= 100000000 mm³
The average number of sand grains in 1 mm³ = 55
The average number of sand in 100000000 mm³ = 5500000000
Thus, there would be 5500000000 sand grain particles in the sandbox.
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Instructions: Answer the following questions in the space provided. Be sure to write your responses in complete sentences.
A father pushes his daughter and son on a sled down a hill.
Part A: Other than the force exerted by the father pushing the sled, identify two additional forces that act on the sled as it travels from the top of the hill to the bottom. (2 pts)
Part B: Explain how each force you identified in Part A will affect the motion of the sled. (2 pts)
Answers
a) Two other forces that act on thee sled are the weight of the daughter and the drag force
b) The drag force slows down the sled while the weight presses it down.
What is motion?We know that motion is the result of the action of unbalanced forces. From the Newton's third law, we know that if the forces that are acting on an object are balanced that the object is not going to move from its state of rest.
In this case, we are told that a father pushes his daughter and son on a sled down a hill. The fact that the led is moving is due to the fact that there are forces that are acting on the sled.
The forces that are acting on the sled apart from the force that was applied in pushing the sled is the drag force and the weight of the son.
The drag force would determine how fast that the sled would move because it acts in opposition to the forward force and tries to slow down the sled as it is moving. The weight of the son does press the sled downwards.
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A light source of 1000 lux is pointed at a virtual model with the following surface reflectivity coefficients: The material is a flat surface on the xz plane. The light source is at located at point (−4,3, 0 ), and the viewer is located at point (2,2,2). What will be the intensity of the light source for the viewer if the light is reflected at point (0,0,0) ?
Answers
To calculate the intensity of the light source for the viewer after being reflected at point (0, 0, 0), we can use the inverse square law for light intensity.
The formula for the intensity of light at a certain distance from the source is given by:
I = I₀ / d²
Where:
I is the intensity of light at a certain distance
I₀ is the initial intensity of the light source
d is the distance from the light source to the point of observation
First, let's calculate the distance from the light source to the point of reflection (0, 0, 0). Using the distance formula, we have:
d₁ = √[(-4 - 0)² + (3 - 0)² + (0 - 0)²]
= √[16 + 9 + 0]
= √25
= 5
Next, let's calculate the distance from the point of reflection (0, 0, 0) to the viewer (2, 2, 2):
d₂ = √[(2 - 0)² + (2 - 0)² + (2 - 0)²]
= √[4 + 4 + 4]
= √12
= 2√3
Now, we can calculate the intensity of the light for the viewer after reflection using the inverse square law:
I_viewer = I₀ / (d₁ + d₂)²
= 1000 / (5 + 2√3)²
To simplify the expression, we can rationalize the denominator:
I_viewer = 1000 / (5 + 2√3)²
= 1000 / (25 + 20√3 + 12)
= 1000 / 37 + 20√3
Therefore, the intensity of the light source for the viewer, after being reflected at point (0, 0, 0), is approximately 27.03 lux.
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he functional unit of the kidney is the .
Answers
Answer:
maintaining overall fluid balance regulating and filtering minerals from blood filtering waste materials from food, medications, and toxic substances.
Explanation:
Answer: Nephrons
Explanation: The structural and functional unit of the kidney is known as nephrons. These are microscopic structures found in the kidneys.
A healthy adult has 0.8 to 1.5 million nephrons in the kidney of a adult. Its main function is filtration of the blood.
Blood is filtered and the impurities are collected to excrete out of the body in the form of urine.
A rock is thrown downwards from the edge of the Grand Canyon. With what velocity will it hit the donkey-riding tourist who is 40 m below?
Answers
A student designed an experiment to show how water is recycled through the atmosphere. The steps of the experiment are shown below. Boil 500 mL of water in a beaker. Hold a hot glass plate a few inches above the beaker with a pair of tongs. Observe water droplets on the glass plate. The student did not see water dripping off the glass plate as expected because the experiment had a flaw. Which of these statements best describes a method to correct the flaw in this experiment?
Hold the glass plate closer to the beaker.
Boil the water in a pan instead of a beaker.
Take more than 500 mL of water in the beaker.
Use a cold glass plate instead of a hot glass plate.
Answers
The flaw in the experiment on water recycling is that the student did not see water dripping off the glass plate as expected. To correct this flaw, the student should use a cold glass plate instead of a hot glass plate.
The correct option to the given question is option 4.
When the student holds the hot glass plate above the beaker, the water vapor in the atmosphere will come into contact with the cold surface of the plate and condense, forming water droplets. However, if the glass plate is already hot, it will not be able to cool down the water vapor quickly enough for condensation to occur.
By using a cold glass plate, the temperature difference between the plate and the water vapor will be greater, allowing for faster condensation. This will result in water droplets forming on the glass plate and dripping off, demonstrating the process of water recycling through the atmosphere.
Therefore, the correct method to correct the flaw in this experiment is to use a cold glass plate instead of a hot glass plate. This will enable the student to observe water droplets on the glass plate as expected.
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what's 4 x 5
i need help with this question please
Answers
Answer:
4 × 5 = 5 + 5 + 5 + 5 = 20
Explanation:
Pick one factor and add it.
Two students are running in a race. Student 1 has more kinetic energy than student 2. Who will win the race?
Answers
More kinetic energy= faster
A worker applies a force of 1,050 N to move a crate 22 m. How much work has he done?
Answers
Answer:
The work done by the worker can be calculated using the formula:Work = Force x Distance x cos(theta)where theta is the angle between the force and the direction of motion. Since the force is applied in the same direction as the motion, theta is 0 degrees and cos(theta) is equal to 1.So, substituting the given values into the formula:Work = 1,050 N x 22 m x cos(0)Work = 23,100 JoulesTherefore, the worker has done 23,100 Joules of work to move the crate 22 meters with a force of 1,050 N
Explanation: