The measured velocity head value in Torricelli's experiment is identical to the theoretical velocity head value, demonstrating that there is no energy loss owing to friction or other reasons, and supporting the idea of energy conservation.
The observed velocity head in Torricelli's experiment denotes the height of a fluid column that is comparable to the fluid's velocity's kinetic energy.
The height of a fluid column that, according to Bernoulli's principle, would yield the same velocity is known as the theoretical velocity head. These two figures are equivalent when compared, showing that there is no energy loss as a result of friction or other reasons.
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Rainfall from a slow-moving thunderstorm was over 5 inches. This storm led to
the erosion of about 0.2 mm of soil from a field. Express this soil loss in Mg ha-1 (Ton/ha) if the bulk density
of the soil is 1.01 Mg m-3.
Please show your work!
a. 0.202 Mg/ha
b. 2.02 Mg/ha
c. 20.2 Mg/ha
The soil loss in \(Mg ha^{-1}\) (Ton/ha) if the bulk density of the soil is 1.01 \(Mg m^{-3}\) is option a. 0.202 Mg/ha.
For expressing the soil loss in \(Mg ha^{-1}\), need to convert the units appropriately. First, convert the soil loss from millimetres (mm) to meters (m) by dividing it by 1,000 (1 mm = 0.001 m). Thus, the soil loss is 0.0002 m.
Next, calculate the volume of soil lost per unit area (ha). The volume can be obtained by multiplying the soil loss (0.0002 m) by the area (ha). Since the bulk density of the soil is given as 1.01 \(Mg m^{-3}\), can convert the volume to mass by multiplying it by the bulk density.
Using the formula:
Soil loss (Mg ha-1) = Soil loss (m) × Bulk density (\(Mg m^{-3}\)) × Area (ha)
Substituting the values:
Soil loss (\(Mg ha-1\)) = 0.0002 m × 1.01 \(Mg m^{-3}\) × 1 ha
Calculating the result:
Soil loss (\(Mg ha-1\)) = 0.0002 × 1.01 = 0.000202 \(Mg ha-1\)
Therefore, the correct answer is option a. 0.202 Mg/ha.
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Size of image is equal to size of object in convex lens, when object is placed:
(a) at F
(b) between F & O
(c) between F & 2F
(d) at 2F
Pls answer fast
Explanation:
the object should be placed at 2F
Answer:
at 2F
Explanation:
hope it will help you
Which would increase the speed of a sound wave?
O A wave passes from a solid to a liquid while remaining the same temperature.
O The medium increases in temperature while remaining in the same phase.
O The medium decreases in temperature while remaining in the same phase.
O A wave passes from a liquid to a gas while remaining the same temperature.
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what resistance would produce a current of 120 amps from a 6-volt battery?
E
2. Evidence:
Complete the table using the acceleration portion of the PhET simulation. (4 points)
mass (kg)
Applied force (N)
50 kg
50 kg
50 kg
50 kg
150 N
200 N
250 N
300 N
Eart/Sum of Forces (N) acceleration (m/s²)
The acceleration of the following given forces and masses are Mass = 50 kg, Force = 150N, Acceleration = 3m/s², Mass = 50 kg, Force = 200N, Acceleration = 4m/s², Mass = 50 kg, Force = 250N, Acceleration = 5m/s², Mass = 50 kg, Force = 300N, Acceleration = 6m/s².
What is Newton's second law of Motion?According to Newton's second law of motion, the rate of change of momentum is directly proportional to the force.
F = ma ----(1)
where,
m is the mass of the body
a is the acceleration by which body move
F is the force
From 1 equation,
a = F/ m
By substituting all the values, we get
For (1),
a = 150/ 50
a = 3m/s²
For (2),
a = 200/50
a = 4 m/s²
For (3),
a = 250/50
a = 5m/s²
For (4),
a = 300/50
a = 6 m/s²
Thus, we concluded that the acceleration of the following given forces and masses are
Mass = 50 kg, Force = 150N, Acceleration = 3m/s²
Mass = 50 kg, Force = 200N, Acceleration = 4m/s²
Mass = 50 kg, Force = 250N, Acceleration = 5m/s²
Mass = 50 kg, Force = 300N, Acceleration = 6m/s²
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Based on what you learned about astronomy from space, select all of the correct statements from the following list.
The Compton, Chandra and Spitzer telescopes are all examples of space telescopes.
Most types of electromagnetic waves are not visible to ground-based telescopes.
Enough infrared energy gets to Earth's surface that infrared telescopes do not need to be put in orbit.
Cosmic rays are the absolute highest-energy type of electromagnetic wave.
The Hubble Space Telescope makes observations at all wavelengths.
Earth's atmosphere has no effect on visible light, so there is no need to place an optical telescope in space.
All for the sattement A, B, and E is True and satement C, D, and F is False where you learned about astronomy from space.
A .The Compton, Chandra and Spitzer telescopes are all examples of space telescopes.
-This statement is True.
B. Most types of electromagnetic waves are not visible to ground-based telescopes.
-This statement is True.
C. Enough infrared energy gets to Earth's surface that infrared telescopes do not need to be put in orbit.
-This statement is False.
D. Cosmic rays are the absolute highest-energy type of electromagnetic wave.
-This statement is False.
E. The Hubble Space Telescope makes observations at all wavelengths.
-This statement is True.
F. Earth's atmosphere has no effect on visible light, so there is no need to place an optical telescope in space.
-This statement is False.
Astronomy is the scientific study of celestial objects and phenomena, including stars, planets, galaxies, and the universe as a whole. Astronomers use various tools and techniques, such as telescopes, spectroscopy, and astrophysics, to observe and understand the properties and behavior of these celestial objects.
Through the study of astronomy, scientists have discovered many fascinating things about the universe, such as the existence of black holes, the age and size of the universe, and the formation and evolution of stars and galaxies. Astronomy has also played a significant role in advancing our understanding of fundamental physics, including the laws of gravity and the behavior of matter and energy at extreme conditions.
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let us assume that we have discovered three solar systems in our galaxy, each with a star and an earth-sized planet in the habitable zone. the stars in the three solar systems have temperatures of 3000 k, 15000 k, and 33000 k respectively. the three habitable planets are named planet a, planet b, and planet c, corresponding to the 3000 k, 15000 k, and 33000 k stars respectively. what is the order, from shortest to longest distance, of the three planets from their respective parent stars in the three solar systems?
The order from shortest to a longest distance of the three planets from their respective parent stars in the three solar systems would depend on various factors such as the size and mass of the stars, as well as the location of the habitable zone around each star.
The habitable zone is the region around a star where conditions are suitable for liquid water to exist on a planet's surface. Generally, cooler stars have habitable zones closer to them, while hotter stars have habitable zones farther away. Based on the given temperatures of the parent stars, we can determine the order of the planets from their respective stars in the three solar systems:
1. Planet A (3000 K stars): This is the coolest star, so the habitable zone is likely to be closest to the star.
2. Planet B (15,000 K stars): This star is hotter than the first, so the habitable zone would be farther away than Planet.
3. Planet C (33,000 K star): This is the hottest star, so the habitable zone would be farthest from the star compared to the other two planets.
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A sailboat runs before the wind with a constant speed of 3.5 m/s in a direction 35º north of west. 1.)How far west has the sailboat traveled in 27 min ? 2.) How far north has the sailboat traveled in 27 min ?
1. In 27 minutes, the sailboat has travelled approximately 4655.4 metres west.
2. In 27 minutes, the sailboat has travelled approximately 4860 metres north.
We can use trigonometry to solve this problem. Let's call the distance traveled west "x" and the distance traveled north "y".
1. To find x, we can use the cosine function. The angle between the direction the boat is traveling and due west is 35º. Therefore, the cosine of 35º gives us the fraction of the boat's speed that is directed west.
cos(35º) = x / (3.5 m/s)
Rearranging this equation to solve for x, we get:
x = cos(35º) * 3.5 m/s = 2.87 m/s
Now we can find the distance traveled west in 27 minutes (or 1620 seconds) by multiplying x by the time:
Distance traveled west = x * t = 2.87 m/s * 1620 s = 4655.4 meters west
Therefore, the sailboat has traveled approximately 4655.4 meters west in 27 minutes.
2. To find y, we can use the sine function. The angle between the direction the boat is traveling and due west is 35º, so the angle between the direction the boat is traveling and due north is 90º - 35º = 55º. Therefore, the sine of 55º gives us the fraction of the boat's speed that is directed north.
sin(55º) = y / (3.5 m/s)
Solving for y, we get:
y = sin(55º) * 3.5 m/s = 3.00 m/s
Now we can find the distance traveled north in 27 minutes (or 1620 seconds) by multiplying y by the time:
Distance traveled north = y * t = 3.00 m/s * 1620 s = 4860 meters north
Therefore, the sailboat has traveled approximately 4860 meters north in 27 minutes.
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An object with a potential energy of 981 J is placed at a height of 2m. What is the mass of the object?
Explanation:
Taking g=10m/s²
P.E =mgh
981J= 2×10×m
981J=20m
m. = 981J/20
m. = 49.05kg
witch substance does light travel fastest
1.empty space
2.air
3.water
4.dimond
air and empty space.
a student is sitting on the right side of a school bus when it makes a right turn. we know that the force of gravity acts downwards and a normal force from the seat acts upwards. if the student stays in place when the bus turns, we also know that there must be a. no other force on the student. b. a force parallel to the seat directed forward on the student. c. a force parallel to the seat directed to the left on the student. d. a force parallel to the seat directed to the right on the student. e. a force parallel to the seat in a direction between forward and left on the student.
When a student is sitting on the right side of a school bus when it makes a right turn, a force parallel to the seat directed to the left on the student. The correct option is c.
There are four fundamental forces: the strong force, the weak force, the electromagnetic force, and the gravitational force. The strong force and the weak force operate only on subatomic particles, whereas the electromagnetic force and the gravitational force act on macroscopic (i.e., everyday) objects.
A force is any interaction that alters or maintains the motion of an object. It's a vector quantity because it has both a magnitude and a direction. The SI unit for force is newtons (N). The forces acting on a student sitting on the right side of a school bus when it makes a right turn are: a force of gravity that acts downwards, a normal force that acts upwards due to the seat, a force parallel to the seat directed to the left on the student if the student stays in place when the bus turns.
So, the correct option is C) a force parallel to the seat directed to the left on the student.
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how long does it take to do 270 J of work with 17 W of power
Answer:
15.9 s
Explanation:
Power = work / time
17 w = 270 j / t t = 15.9 s
"A student bikes to school by traveling first dN = 0.900" and "Similarly, let d⃗ W be the displacement vector corresponding to the second leg of the student's trip. Express d⃗ W in component form. Express your answer as two numbers separated by a comma. Be careful with your signs"
Complete Question
A student bikes to school by traveling first dN = 0.900 miles north, then dW = 0.300 miles west, and finally dS = 0.100 miles south.
Similarly, let d⃗ W be the displacement vector corresponding to the second leg of the student's trip. Express d⃗ W in component form.
Express your answer as two numbers separated by a comma. Be careful with your signs.
Answer:
The value is \(dT = ( -0.3, 0.8)\)
Explanation:
From the question we are told that
The first displacement is \(dN = 0.900 \ due \ North\) i.e positive y-axis
The second displacement is \(dW = 0.300 \ miles \ due \ west\) i.e negative x-axis
The final displacement is \(dS = 0.100 \ miles \ due \ south\) i.e negative y-axis
Generally dW in component for is
\(dW = (-0.3 , 0)\)
Generally the total displacement of the student is mathematically represented as
\(dT = ( -0.3, (0.90 - 0.10))\)
\(dT = ( -0.3, 0.8)\)
You are out on the water in foggy conditions. You hear one prolonged blast plus two short blasts every two minutes. What does this sound signal mean?
The sound signal helps to caution and let other people know the exact
position or location during sailing in limited visibility conditions.
Sailors are in which charge of controlling and movement of ships. In limited
visibility conditions such as during fogs, one prolonged blast plus two short
blasts every two minutes are done.
This helps to alert people and other sailors of their location at sea to prevent
accidents and death.
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The sound signal helps to know the exact location during sailing in foggy conditions.
Who are sailors?
Sailors are the in charge of controlling and movement of ships. In limited visibility conditions such as fogs, one prolonged blast plus two short blasts every two minutes are done.
This helps to caution people and other sailors around their location at the sea to prevent accidents and death.
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menkhib is one of the brightest and hottest stars in the constellation perseus. based on the nebula it is in, what might be a fun, pointed name for it? a. new york b. los angeles c. paris d. warsaw
The star Menkhib in the constellation Perseus is given a fun pointed name called los Angeles. So, option b.
With a surface temperature of roughly 37,000 Kelvin, Menkhib is one among the brightest and hottest stars in the night sky. Its high temperature causes it to seem blue white to the human sight, but practically all stars do so to WISE.
Mass of Menkhib is almost 40 times that of the sun's, and it emits 330,000 times as much light.
Runaway star Menkhib is producing a shock wave in front of it from the stellar wind it is producing at a rapid rate.
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Is the net force on an object moving with uniform velocity zero or not zero?
Answer:
Zero
Explanation:
The net force acting on an object moving with uniform velocity is zero. This is an accordance with the Newton's first law of motion.
Newton's first law of motion states that a body will continue in its state of rest or uniform motion unless it is acted upon by an external force.
Since this body is moving with uniform motion, it is not accelerating. When a body is acceleration, the net force on it is not zero.
But this one is moving with uniform motion. The net force on the body is balanced and zero.
answer all parts please
3. (Chapt 29, LO 7) A hydrogen atom is prepared in the n = 3 quantum state and decays to the m= 2 quantum state by emitting light. (a) (5 pts) What is this atom's energy in the n = 3 quantum state in
The energy of the hydrogen atom in the n = 3 quantum state is approximately -1.511 electron volts (eV).
In a hydrogen atom, the energy levels are determined by the principal quantum number n. The energy of an electron in the n-th energy level can be calculated using the formula:
En = -13.6 eV / n^2
where En is the energy of the electron in electron volts (eV) and n is the principal quantum number.
Given that the hydrogen atom is prepared in the n = 3 quantum state, we can substitute n = 3 into the formula to find the energy of the atom in this state.
E3 = -13.6 eV / (3^2)
= -13.6 eV / 9
= -1.511 eV
Therefore, the energy of the hydrogen atom in the n = 3 quantum state is approximately -1.511 electron volts .
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A permanent magnet of length l is dropped from a height h through a coil. What is the ratio of the emf induced in the coil at the moment the bottom of the magnet enters the coil to the emf induced in the coil at the moment the top of the magnet leaves the coil?.
The emf induced in a coil is given by the equation:
emf = -N dΦ/dt
Where N is the number of turns in the coil, Φ is the magnetic flux through the coil, and dt is the change in time.
When the magnet is dropped from a height h through the coil, it induces a changing magnetic flux through the coil. As the magnet enters the coil, the flux through the coil increases, and as the magnet exits the coil, the flux through the coil decreases. The rate of change of the magnetic flux through the coil is therefore maximum at the moment the bottom of the magnet enters the coil and at the moment the top of the magnet leaves the coil.
The emf induced in the coil is proportional to the rate of change of the magnetic flux. Therefore, the ratio of the emf induced in the coil at the moment the bottom of the magnet enters the coil to the emf induced in the coil at the moment the top of the magnet leaves the coil is equal to the ratio of the rate of change of the magnetic flux at these two moments.
Since the magnet is of length 1, the rate of change of the magnetic flux is the same at both ends of the magnet. Therefore, the ratio of the emf induced in the coil at the moment the bottom of the magnet enters the coil to the emf induced in the coil at the moment the top of the magnet leaves the coil is 1:1 or simply 1.
according to this passage when making healthcare decisions, how should a person approach the decision making process
Answer:
What is your name?
Explanation:
no bro I don't know I am New of this app so I don't know
Distant galaxy is simultaneously rotating and receding from the earth. As the drawing shows, the galactic center is receding from the earth at a relative speed of uG 5 1. 6 3 106 m/s. Relative to the center, the tangential speed is vT 5 0. 4 3 106 m/s for locations A and B, which are equidistant from the center. When the frequencies of the light coming from regions A and B are measured on earth, they are not the same and each is diff erent from the emitted frequency of 6. 200 3 1014 Hz. Find the measured frequency for the
We can use the relativistic Doppler effect formula, which relates the observed frequency of light to its emitted frequency and the relative velocity between the emitter and observer:
\(f_{observed} = f_{emitted} * sqrt((1 + v/c) / (1 - v/c))\)
where:
f_observed is the observed frequency
f_emitted is the emitted frequency
v is the relative velocity between the emitter and observer
c is the speed of light
For region A,
the emitter is moving tangentially at a speed of \(vT = 0.43 *10^6\) m/s relative to the galactic center, which is receding from Earth at a speed of \(uG = 1.63 * 10^6 m/s.\)
Therefore, the relative velocity between the emitter and observer (Earth) is:
\(v = vT + uG = 2.06 *10^6 m/s\)
Plugging this into the relativistic Doppler effect formula, along with the emitted frequency of\(6.200 * 10^14 Hz\), we get:
\(f_{observed_A} = 6.200 * 10^14 Hz * sqrt((1 + 2.06 *10^6 m/s / 3 * 10^8 m/s) / (1 - 2.06 * 10^6 m/s / 3 *10^8 m/s))\)
\(= 6.225 *10^{14} Hz\)
Therefore, the observed frequency of light from region A is \(6.225 *10^{14} Hz\) .
Using the same method for region B, which is also equidistant from the galactic center, we get the same observed frequency of
\(6.225 *10^{14} Hz\)
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Suppose that the mirror is moved so that the tree is between the focus point F and the mirror. What happens to the image of the tree?
1. the image moves behind the curved mirror.
2.The image stays the same.
3.The image appears taller and on the same side of the mirror.
4. The image appears shorter and on the same side of the mirror.
When the mirror is moved so that the tree is between the focus point F and the mirror, the image appears shorter and on the same side of the mirror.This happens because of the phenomenon known as Reflection of Light. The mirror reflects light in such a way that it appears as if the light is coming from behind the mirror.
As a result, a virtual image is formed behind the mirror. This virtual image is similar in size and shape to the object being reflected.The characteristics of the image produced by a mirror depends on the location of the object relative to the mirror. There are two types of mirrors that we use to reflect light: Concave and Convex. In the case of a concave mirror, the image produced can either be real or virtual. When an object is placed between the focus point and the mirror, a virtual and erect image is produced. This image is smaller than the actual object and appears behind the mirror. The image is virtual because the light rays do not converge at the location of the image. In the case of a convex mirror, the image produced is always virtual, erect, and smaller than the actual object. As the object moves closer to the mirror, the image gets smaller. If the object is moved to a position where it is between the focus point and the mirror, the image produced will appear shorter and on the same side of the mirror.For such more question on Concave
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True or False. The entire world is
ultimately made up of three kinds of
particles: protons, neutrons, and
electrons.
Answer:
Explanation:
False.
There are also fields -- gravitational, electromagnetic...
What 3 things can cause acceleration?
When affective commitment is high, ________. employees are not expected to go above and beyond the call of duty employees perform OCBs only when asked to do so employees are likely to perform OCBs employees are less satisfied on the job
When affective commitment is high, employees are likely to perform OCBs (Organizational Citizenship Behaviors).
This means that they will voluntarily go above and beyond the call of duty to support the organization and their colleagues, without being asked to do so. High affective commitment is associated with positive feelings towards the job and organization, which in turn leads to a greater willingness to engage in discretionary behaviors that benefit the organization. Therefore, employees with high affective commitment are more likely to be satisfied on the job. OCBs are voluntary actions that benefit the organization but are not explicitly part of the job description. Examples of OCBs include helping coworkers, volunteering for additional tasks, offering suggestions for improvement, and engaging in positive communication and teamwork. Employees with high affective commitment are more likely to engage in these behaviors because they genuinely care about the organization's well-being and success.
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How do you change an object's motion?
is density the degree of compactness of a substance?
FILL IN THE BLANK. The radius of a white dwarf is determined by a balance between the inward force of gravity and the outward push of: A(n) ___ occurs when hydrogen fusion ignites on the surface of a white dwarf in a binary system. A(n) ___ occurs when fusion creates iron in the core of a star. A white dwarf in a close binary system will explode as a supernova if it gains enough mass to exceed the A(n) ___ consists of hot, swirling gas captured by a white dwarf (or neutron star or black hole) from a binary companion star. A(n) ___ can occur only in a binary system, and all such events are thought to have the same luminosity.
Fill in blank answers are- electron degeneracy pressure, nova, massive star supernova, white dwarf limit, accretion disk and white dwarf supernova
The radius of a white dwarf is determined by a balance between the inward force of gravity and the outward push of electron degeneracy pressure.
A nova occurs when hydrogen fusion ignites on the surface of a white dwarf in a binary system.
A massive star supernova occurs when fusion creates iron in the core of a star.
A white dwarf in a close binary system will explode as a supernova if it gains enough mass to exceed the white dwarf limit.
An accretion disk consists of hot, swirling gas captured by a white dwarf (or neutron star or black hole) from a binary companion star.
A white dwarf supernova can occur only in a binary system, and all such events are thought to have the same luminosity.
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in science, whereas a hypothesis is a tentative explanation of an observation, a is a broader, well-tested explanation for a natural phenomenon backed by many lines of evidence.
In science, a hypothesis is a tentative explanation of an observation, while a scientific theory is a broader, well-tested explanation for a natural phenomenon backed by multiple lines of evidence.
In the scientific method, a hypothesis is an initial explanation or proposed solution to a specific observation or problem. It is often based on limited evidence or previous knowledge and serves as a starting point for further investigation. A hypothesis is testable and can be supported or refuted through experimentation or further observations. It represents a possible explanation that requires empirical evidence to validate or invalidate its validity.
On the other hand, a scientific theory is a well-established and comprehensive explanation for a natural phenomenon that has been extensively tested and supported by multiple lines of evidence. Unlike a hypothesis, a scientific theory goes beyond a single observation or experiment. It encompasses a broad range of observations, experimental results, and logical reasoning. A scientific theory provides a framework that can explain and predict various related phenomena. It is subject to ongoing scrutiny and refinement, but its validity and acceptance are based on its consistency with empirical evidence and its ability to make accurate predictions.
In summary, while a hypothesis is a tentative explanation of an observation, a scientific theory is a broader and well-tested explanation that is supported by multiple lines of evidence and can account for a range of related phenomena.
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Krebs Cycle experiment: if you want to increase the rate of the succinate forming fumarate, what could you do to the experiment?
To increase the rate of the succinate forming fumarate you can increase the ATP and the enzyme that catalyzes this reaction
The Krebs cycle, also known as the citric acid cycle comprises a set of chemical reactions that are essential for organisms to obtain energy.
One of the steps in the cycle involves the use of succinate with a chemical formula of C4H6O4 to form fumarate or C4H4O4. This means in this reaction it is necessary to remove 2 hydrogen atoms.
This process requires two main factors:
ATP or energy the cell uses to carry out the reactionSuccinate dehydrogenase or the enzyme that removes the hydrogen atomsBased on this, the reaction can be faster if there is more succinate dehydrogenase or if the energy increases.
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During an experiment a student records the net horizontal force exerted on an object moving in a straight line along a horizontal frictionless track. The graph above shows the force as a function of time. Of the following, which is the best approximation of the magnitude of the change in momentum of the object between 0 s and 4 s? (A) 20 kg•m/s (B) 30 kg•m/s (C) 40 kg•m/s () The magnitude of the change in momentum
Answer:c 40kg
Explanation:
Answer:
B. 30 kg * m/s
Explanation:
college board answer