The approximate frequency is 9.96 × ³³ s-1
Solution:
Hypothetical wave energy = 6.6 J
Hypothetical wave frequency =?
E = HV
v = E / h
Where,
E = energy in joules
h = plank's constant & = 6.626 × 10-34 J.s
v = frequency in s-1
On substituting the values in the above formula :
v = E / h
v = 6.6 J / 6.626 × 10-34 J.s
v = 0.996 × 1034 s-1
v = 9.96 × 1033 s-1
Hence hypothetical wave frequency is = 9.96 × 10³³ s-1.
Count the markers to determine the frequency of each class. The relative frequency of a data class is the percentage of data items in that class. A joule is a unit of energy in the International System of Units. This is the work done when a force of 1 Newton displaces a mass 1 meter in the direction of the applied force.
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The graph represents the reaction 2H₂ + O₂ 2H₂O as it reaches
equilibrium. Based on the graph, which two statements about this reaction
are true?
Concentration (mol/L)
1
2
Time (s)
3
4
- H₂O
H
The following are true :
C. At point 2 the concentrations of H20...O2... & H2 are all changing toward their equilibrium concentrations
D. At point 1 more reactants are converted to products than products are converted to reaction.
What is equilibrium ?A state in which opposing forces or actions are balanced so that one is neither stronger nor greater than the other. Demand and supply were in balance chemical balance. An object is in equilibrium when all the forces acting on it are balanced. These forces are considered balanced if the rightward force balances the leftward force and the upward force balances the downward force. Examples of balance are: A book quietly placed on the table. A car that travels at a fixed speed. A reaction in which the forward and reverse reaction rates are equal.To learn more about equilibrium from the given link :
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A cyclist is traveling uphill, then downhill. At first, he travels uphill 1.0 km with a speed of 5 m/s. Then, he travels down that same hill at a speed of 15 m/s. What was his average speed?
I do the work on paper with steps and attached it to the answer!
what is the de broglie wavelength (in nanometers) of an electron with a velocity of 2.5 x 106 m/s? enter the numerical answer only; do not enter a unit.
The de Broglie wavelength (in nanometers) of an electron with a velocity of 2.5 x [tex]10^{6}[/tex] m / s is 0.29 nm
λ = h / m v
λ = Wavelength
h = Planck's constant
m = Mass
v = Velocity
v = 2.5 * [tex]10^{6}[/tex] m / s
m = 9.1 * [tex]10^{-31}[/tex] kg
h = 6.626 * [tex]10^{-34}[/tex] J s
λ = 6.626 * [tex]10^{-34}[/tex] / ( 9.1 * [tex]10^{-31}[/tex] * 2.5 * [tex]10^{6}[/tex] )
λ = 0.29 * [tex]10^{-9}[/tex] m
λ = 0.29 nm
De Broglie's equations describes that matter can act as waves just as light and radiation do. It also states that beam of electrons can also be diffracted like a beam of light
Therefore, the wavelength of the electron is 0.29 nm
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At a certain depth in the ocean, the absolute pressure is p. If you go to twice that depth (treating the water as incompressible).
At a certain depth in the ocean, the absolute pressure is p. If you go to twice that depth the absolute pressure will be less than 2p.
Theory:-Talking about pressure when describing gases, liquids, and fluids; stress is used to describe solids. When a fluid is at rest, all directions experience the same pressure at a specific point.Absolute pressure, which is measured in relation to absolute vacuum, is the actual pressure present at a specific location.Gauge pressure is equal to atmospheric pressure minus absolute pressure.Principle :- Absolute pressure is the term used to describe the actual pressure at a specific location. It is measured in relation to absolute vacuum (i.e. e. absolute zero pressure). However, the majority of pressure-measuring instruments are calibrated to read zero in the atmosphere, and as a result, they display the discrepancy between the absolute pressure and the local atmospheric pressure. The gage pressure is the name given to this variation. Vacuum gages, which show the difference between the atmospheric pressure and the absolute pressure, are used to measure vacuum pressures, which are pressures below atmospheric pressure.To understand more about atmospheric pressure-
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let be the subspace of spanned by the vectors and . find the projection matrix that projects vectors in onto . .
If A is a matrix, its projection onto its column space is always represented by the matrix P=A(AA)1A. This simplifies to AA in the scenario where A is orthogonal.
What is deemed to be orthogonal?Orthogonal objects are connected by their perpendicularity to one another in Euclidean geometry. Lines of line segments that cross at a perpendicular angle are said to be connected orthogonally. Similar to this, two vectors are said to be orthogonal if they intersect at a 90-degree angle.
How does orthogonal behavior work?When two systems are orthogonal, they do not impact one another through interaction. At some point or junction, they come together, but other from that, neither system affects the other. Because of this independence, moving, testing, or changing things in one system does not affect components in the other system.
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Which interaction between magnets demonstrates the greatest change in kinetic energy?
Answer:
two attracting magnets are released while moving away from one another.
Explanation:
Answer:the correct answer is: two attracting magnets are released from hole moving towards one another
Explanation:
Why are two permanent magnets attracted to each other?.
The reason why two permanent magnets attract is that they have opposite pole.
What is a magnet?We know that a magnet has to do with an object that has its magnetic domains properly aligned in such a way that it can be able to attract other objects. We have to see here that a permanent magnet could have a north pole and a south pole.
Given that magnets that have different poles are going to attract because of the alignment of the magnetic domains in the both magnets, we can say that it is possible for two permanent magnets to attract.
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describes when forces along the body are transmitted to an adjacent structure, usually the floor or a piece of equipment.
when forces along the body are transmitted to an adjacent structure, usually the floor or a piece of equipment is called Closed Kinetic chain .
A closed kinetic chain exercise, according to Steindler, occurs when the distal section encounters "substantial" external resistance that prevents unrestricted movement. As a result, neither the proximal nor the distal portions can move in this system.
Unfortunately, Steindler did not provide a numerical value for the word "substantial" in his original definition, which causes misunderstanding and disagreement over what constitutes a true closed kinetic chain movement. Except during isometric exercises, where there is no movement, true closed kinetic chain movement patterns never happen in the extremities.
However, in clinical practise, "resistance is imposed through the distal portion of the extremity and remains fixed to the extremities" is the definition of a closed kinetic chain. The standing squat is the best illustration of this since the feet stay firmly planted and the surface encounters significant resistance from the athlete's bodyweight or additional weight.
Due to its built-in functional stimulation, closed kinetic chain exercises have been used more and more in rehabilitation programmes for more than 20 years.
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What events take place within the mitochondrial membrane?.
On the inner mitochondrial membrane, an excessive energy electron is surpassed alongside an electron transport chain. The electricity launched pumps hydrogen out of the matrix area. The gradient created through this drives hydrogen returned thru the membrane, via ATP synthase.
The inner mitochondrial membrane transduces power via oxidative phosphorylation, the primary procedure liable for the production of power in the form of ATP in eukaryotic cells (Saraste, 1999).
Mitochondria, using oxygen to be had inside the cell convert chemical strength from food within the cellular to power in a shape usable to the host mobile. The procedure is known as oxidative phosphorylation and it happens in internal mitochondria.
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When considering gravity acceleration and the force of acceleration, what must be true? Question 14 options: A) The mass of the body must be the same as the acceleration of the body. B) The direction of the force and the direction of acceleration must be opposite of each other. C) The direction of the force and the direction of acceleration must be the same as each other. D) The direction of acceleration must be perpendicular to the direction of the force.
When considering gravity acceleration and the force of acceleration, Option C. The direction of the force and the direction of acceleration must be the same as each other.
Acceleration is the rate of change of the velocity of an item with appreciation to time. Accelerations are vector portions. The orientation of an item's acceleration is given by the orientation of the net pressure appearing on that object.
Acceleration is the charge at which velocity modifications with time, in terms of each speed and route. A factor or an object moving in a straight line is accelerated if it quickens or slows down. movement on a circle is extended despite the fact that the rate is consistent because the course is continually changing.
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A small rock with mass 0.18 kg is released from rest at point a, which is at the top edge of a large, hemispherical bowl with radius r = 0.50 m. assume that the size of the rock is small compared to r, so that the rock can be treated as a particle, and assume that the rock slides rather than rolls. the work done by friction on the rock when it moves from point a to point b at the bottom of the bowl has magnitude 0.22 j. between points a and b, how much work is done on the rock by the normal force?
There is no work done by the normal force because all of the work is being done by gravity.
W=0 J where J is Joules.
Normal force is always perpendicular to the motion of the body, hence work done by normal force is zero.
Work done = force×d = Fdcos(Θ) { cos(90) = 0 }
Work done = 0 J
As the box moves down the incline, the only force doing work on the box is the force of gravity. The weight of the box is mg and the inclined plane makes an angle theta with respect to the horizontal, so the force of gravity is mg × sin(Θ)
So the work done by gravity is
W=mg×sin(Θ)×d
where d is the distance the box travels down the incline. The normal force is perpendicular to gravity, so the work done by the normal force is
W=F×d×cos(90)=0
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what is the magnitude of the acceleration of a speck of clay on the edge of a potter's wheel turning at 45 rpm if the wheel's diameter is 35 cm?
The centripetal acceleration of a speck of clay on the edge is 3.89 m/s².
We need to know about centripetal acceleration to solve this problem. The centripetal acceleration depends on the angular velocity and the radius. It can be written as
a = ώ² . R
where a is centripetal acceleration, ώ is angular velocity and R is radius.
From the question above, the given parameters are
ώ = 45 rpm
d = 35 cm
R = 35/2 = 17.5 cm = 0.175 m
Convert the angular velocity unit to rad/s
ώ = 45 rpm
ώ = 45 x 2π / 60 rad/s
ώ = 1.5π rad/s
By substituting the given parameters, we can calculate the centripetal acceleration
a = ώ² . R
a = 1.5π² . 0.175
a = 3.89 m/s²
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If you wanted to search for faint rings around a giant planet by sending a spacecraft on a flyby, it would be best to make your observations.
Answer:
After the spacecraft has passed the planet
Explanation:
Astronomy Test 6
White dwarf supernovae are good standard candles for distance measurements because.
White-dwarf supernovae occur only among young and extremely bright stars.
Two stars in a binary system revolve around the same location. A carbon-oxygen white dwarf, one of the stars, takes materials from its neighbouring star. The white dwarf eventually becomes overburdened with matter. A supernova is produced when a star explodes due to an excess of stuff.
According to a recent study, the supernova explosion of a white dwarf star could have effects similar to those of a nuclear bomb on Earth. White dwarfs are the dull, fading cores of dead stars, about the size of Earth, that remain after stars of average size have used up their fuel and lost their outer layers.
An eruption from the surface of a white-dwarf star in a binary star system is known as a nova. When a white dwarf, which is the dense core of a former normal star, "steals" gas from a neighbouring companion star, a nova is the result. When the white dwarf's surface accumulates enough gas, an explosion results.
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If humans one day encountered aliens, what measurement system would we most likely share with them?
If humans one day encountered aliens, the measurement system we would most likely share with them is the speed of light since it's a universal measurement.
What is the speed of light?The speed of light in a vacuum, commonly denoted as c, is a universal physical constant that is important in many areas of physics. The speed of light c is exactly equal to 299,792,458 meters per second.
The speed of light is also known as the speed at which light waves propagate through different materials.
Since the speed of light is a universal measurement, humans would most likely share it with aliens if we one day encountered them.
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A box has 3 forces acting on it. A 1.05N force north, another 9.54N force to the north, and a 33.96N force to the south. What is the net force on the box?
The net force acting on the box is [tex]23.37N[/tex]
What is Force?
Force is defined as the product of mass and acceleration. It's SI unit is newton F=ma [tex]MLT^{-2}[/tex] is a dimensional formula of force.The push or pull on an object with mass ,change its velocity.Net Force = Difference between opposite direction forces.
Force acting on the box in north direction=[tex]1.05N+9.54N[/tex]
=[tex]10.59N[/tex]
Force acting on the box in south direction=[tex]33.96N[/tex]
Therefore,Net force=[tex]33.96N-10.59N[/tex]
=[tex]23.37 N[/tex].
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two billiard balls of equal mass undergo a perfectly elastic head-on collision. if one ball's initial speed was 1.90 m/s , and the other's was 3.20 m/s in the opposite direction, what will be their velocities after the collision?
Answer:
One can use conservation of momentum and energy and obtain the result that the velocity of separation in such a collision will be equal to the velocity of approach
Thus, after collision their speeds will be 3.20 and 1.90 m/s
They will exchange velocities in the collision
If they were approaching each other their relative speeds are
5.10 m/s w.r.t. each other
If they were going in the same direction before the collision their relative speeds before and after the collision are 1.3 m/s
The problem here implies that their relative speed before the collision is 5.10 m/s (traveling in opposite directions)
how much work www does the motor do on the platform during this process? enter your answer in joules to four significant figures.
The motor in the platform works for W=1885J during this process.
What is joules?The amount of energy expended when a force of one newton is applied across a displacement of one meter is known as a joule. A joule is equal to one watt of electricity emitted or lost over the course of one second. The British thermal unit (Btu) is sometimes used to express energy. the work- or energy-measurement unit derived from the SI. The energy required to accelerate a body with a mass of one kilogram over a distance of one meter using one newton of force is equal to one joule. Additionally, one joule is equal to one watt-second.
What is joules formula?The energy required to exert one newton of force through one meter is measured in joules. For instance, the energy required to lift a one-kilogram object one meter is given by E = Fd = (ma)d = mgd = (1 kg)(9.8m/s2)(1 m) = 9.8 kg m/s2 = 9.8 joules.
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What happens when a boulder has a mass of 4812 kg when it smashes into the ground
Given that the boulder's pe value is 4037.6, the energy it possesses immediately before impact must be equal to the energy it had at the time it began. In this manner, the bolder's potential energy
Kinetic energy: a definition and some instancesWhen a particle, object, or collection of particles move, kinetic energy, the energy of motion, is demonstrated. Kinetic energy is the energy that is released when a moving object moves, such as when a person walks, a ball is thrown, food falls off a table, or a particle is charged by an electric field.
Kinetic energy is produced by what?Potential energy that has been set into motion by factors like elastic forces or gravity can then be converted into kinetic energy. The power behind motion is called kinetic energy. An object's kinetic energy increases as force is applied to it, which causes it to move faster.
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two cannonballs, a and b, are fired from the ground with identical initial speeds, but with ua larger than ub . (a) which cannonball reaches a higher elevation? (b) which stays longer in the air? (c) which travels farther? expl
Cannon A reaches a higher elevation when two cannonballs, a and b, are fired from the ground with identical initial speeds, but with ua larger than ub.
Because elevation rises with increasing angle, Cannon A fires at a higher altitude. Finding the vertical velocity will yield the elevation. The velocity increases as the angle increases. Cannon A's elevation is higher than Cannon B's because the angle from which the projectile was fired from Cannon A was greater. Due to its higher elevation, Cannon A flies higher for a longer period of time. The formula for time is t = (2y)/g, meaning that the larger y is, the larger time will be. Cannon A is in the air for a longer period of time because elevation and vertical velocity affect time.
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In the coordinate plane, line p has slope 1 3 and y-intercept (0, 2). Line r is the result of dilating line p by a factor of 3 centered at the origin. What are the slope and y-intercept of line r?.
The line r has slope 8 and coordinate (0.8).
What is line?
a line is an infinitely long to the object with no width, depth, or curvature. Thus, the lines are the one of one-dimensional objects, though they may exist on it two, three, or higher of the dimension spaces. The word line may also refer to a line are the segment in everyday life, which has two points to denote its ends.
Sol-As per the given question The line r has slope 8 and coordinate (0.8).
The slope of the line r will not change.
And intercept is the addition of their ordinate will be.
Intercept = 5+3
Intercept = 8
So, the line r has slope 8 and coordinate (0.8).
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A series lc circuit contains a 100-mh inductor, a 36. 0-mf capacitor, and a 12-v battery. The angular frequency of the electromagnetic oscillations in the circuit is.
The angular frequency of the oscillation of the electromagnetic oscillations of the LC circuit is 16.66 rad/s.
The angular frequency of the electromagnetic oscillations in the given circuit is given by,
W = 1/√(LC)
Where,
W is the angular frequency,
L is the inductance of the inductor in the circuit,
C is the capacitance of the capacitor in the given circuit,
It is given that, LC circuit contains a 100-mh inductor, a 36.0-mf capacitor,
So, putting values,
W = 1/√(36 x 100x10⁻⁶)
W = 1/6x10⁻²
W = 16.66 rad/s.
So, the angular frequency is 16.66 rad/s.
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a 1.5 m long, 0.75 kg dowel is pivoted about the end so that it is a pendulum of sorts - it can freely swing in a vertical plane. at the other end of the dowel is a brass weight having mass 1.5 kg. (the center of the brass weight is 1.5 m from the pivot point.) when the rod is positioned in its swing such that its angle with the vertical is 22.5 degrees, what is the net torque on the rod about the pivot?
Due to the brass weight's existence, the rod's torque about the pivot is 8.44 N.m.
What is torque?A force that may rotate an object about an axis is known as a torque. In linear kinematics, force is what drives the acceleration of an object. The same is true for angular acceleration, which is caused by torque. Thus, torque can be seen as the rotating counterpart of force. The term "axis of rotation" refers to the straight line around which the item rotates.
Given parameters:
Mass of the brass weight, m= 1.5 kg.
Length of the rod, l = 1.5 m.
Angle with the vertical; θ =22.5⁰.
We have to find, the brass weight's presence causing torque on the rod about the pivot; ζ = ?
Force applied by the brass weight; F = mass × acceleration due to gravity = 1.5 × 9.8 N = 14.7 N.
So, the brass weight's presence causing torque on the rod about the pivot; ζ = Fl sinθ
= 14.7 × 1.5 × sin22.5° N.m
= 8.44 N.m.
Hence, the applied torque on the rod about the pivot is is 8.44 N.m.
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How do enzymes affect cells?.
Enzymes accelerate chemical reactions in cells.
Specifically lowering the threshold required to initiate the intended response. They do this by binding to another substance called a substrate. Enzymes are proteins that function as biological catalysts by accelerating chemical reactions. Molecules on which enzymes can act are called substrates, and enzymes convert substrates into various molecules known as products.
Enzymes are proteins that facilitate metabolism and chemical reactions in the body. Build some substances and break down others. All living things have enzymes. Our bodies naturally produce enzymes. Enzymes are proteins made up of amino acids linked together in one or more polypeptide chains. This arrangement of amino acids in the polypeptide chain is called the primary structure.
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Stars like the sun emit energy from nuclear fusion which combines small nuclei of hydrogen into larger nuclei of helium. All matter in the universe is created from stars. Which of these creates heavier elements like copper and zinc?.
The explosions (supernovae) of first-generation stars creates heavier elements like copper and zinc.
What were first-generation stars?First-generation stars were stars that were formed shortly after the Big Bang. They consisted of primarily hydrogen and helium. Second-generation stars like the Sun contain some heavier elements. The elements couldn't exist just based on nuclear fusion inside stars. Instead, some of the elements must have come from the supernovae of first-generation stars.
The only way heavier elements like oxygen, carbon, and iron can form is by fusion of lighter elements in the cores of stars. Therefore, until the first stars began to form heavier elements, none of those elements existed in the universe.
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a nonsinusoidal electromagnetic wave like that described in section 32.2 has uniform electric and magnetic fields. the magnitude of the poynting vector for this wave is 11.0 w/m2w/m2 . find the magnitude of the electric field. express your answer with the appropriate units. ee
The magnitude of the electric field of the electromagnetic wave is E = 64.4 V/m
What is an electromagnetic wave?An electromagnetic wave is awave that does not require a medium to propagate
What is an electric field?An electric field is a region in which the effect of an electric force is felt.
How to find the magnitude of the electric field?Since a nonsinusoidal electromagnetic wave like that described in section 32.2 has uniform electric and magnetic fields. the magnitude of the poynting vector for this wave is 11.0 W/m².
What is the poynting vector?The magnitude of the poynting vector is given by
S = E²/μ₀c where
E = electric field, μ₀ = permeability of free space = 4π × 10⁻⁷ H/m and c = speed of electromagnetic waves = 3 × 10⁸ m/sSince we require the electric field, making E subject of the formula, we have
E = √(Sμ₀c )
Given that S = 11.0 W/m²,
Substituting the value sof the variables into the equation, we have
E = √(Sμ₀c )
E = √(11.0 W/m² × 4π × 10⁻⁷ H/m × 3 × 10⁸ m/s)
E = √(44π × 3 × 10WH/s)
E = √(1320π WH/s)
E = √(4146.9 WH/s)
E = 64.4 V/m
So, the magnitude of the electric field is E = 64.4 V/m
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A brick is resting on a rough inclined surface. The friction force acting on the brick, along the incline, is.
When a brick is at rest on the inclined plane,it means all forces are balanced on the brick.
so, Gravitational force (mg) will act in component along the iclined are mgsinQ in downwards and mgcosQ in perpendicular,
Therefore frictional force will work in opposit of mgsinQ
it means mg(sinQ) = frictioal force
on the other side we can find force balance perpendicular to the inclined plane as ;
Normal(N) = mg(cosQ)
To move the brick less frictional force is required or we need to increase the force.
so from above equation we can say that,Friction force is grater then the Gravitational force.
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The acceleration of gravity on planet Y is 14.4 m/s/s. An object has a mass of 42.2 kg. What would be its weight on planet Y?
Weight
Help Links
N
Answer:
607.68N [weight on planet Y]
Explanation:
Using the formula
[tex]w = mg[/tex]
Where w is the weight, m is the mass and g is the gravity.
Gravity (g) on planet Y is 14.4 m/s/s
Object has a mass (m) of 42.2 kg
Weight (w) on planet Y is w
-
NOTE: '•' MEANS MULTIPLICATION
NOTE: WEIGHT IS MEASURED IN NEWTONS (N)
-
Inputing the values into the formula, and solving it...
w = mgw = 42.2 • 14.4w = 607.68== 607.68N [weight on planet Y]
What system acquisition method has the advantages of forcing staff to systematically go through every step in a structured process, enforcing quality by maintaining standards, and lowering the probability of missing important issues in collecting user requirements?.
Human resource planning (HRP) is the system acquisition method that has the advantages of forcing staff to systematically go through every step in a structured process, enforcing quality by maintaining standards, and lowering the probability of missing important issues in collecting user requirements.
HRP is the ongoing practice of strategically planning ahead to make the most use of an organization's most important asset—qualified workers. Planning for human resources helps prevent shortages or surpluses of labor while ensuring the optimal match between
Planning for human resources helps businesses ensure a consistent supply of qualified workers. For this reason, it is also known as workforce planning. Companies use the process to evaluate their needs and make future plans to meet those needs.
Planning for human resources must be adaptable enough to address short-term staffing issues as well as long-term changes in the corporate environment. HRP begins by evaluating and reviewing the current human resource capabilities.
The HRP process is divided into four broad steps: identifying the present employee supply, forecasting the workforce, balancing labor supply and demand, and creating plans that support the company's objectives.
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A metal sphere with a mass of 0.066 kg rolls along a friction-less surface at 4.4 m/s and strikes a stationary sphere having a mass of 0.019 kg. The first sphere stops completely. The spheres are in contact for 0.010 s before the second sphere is shot off down the track. What is the force applied to the second ball?
Work out and Use Units
The force applied to the second ball is 29.04 N.
What is the momentum of the metal sphere?
The final velocity of the second sphere is calculated as follows;
m₁u₁ + m₂u₂ = v(m₁ + m₂)
where;
m₁ is mass of the first m₂ is the mass of the second sphereu is the initial velocityv is the final velocity0.066(4.4) + 0.019(0) = v(0.066 + 0.019)
0.2904 = 0.085v
v = 0.2904/0.085
v = 3.42 m/s
The final momentum of the metal sphere is calculated as follows;
Pf = v(m₁ + m₂)
Pf = 3.42(0.066 + 0.019)
Pf = 0.2904 kgm/s
The force applied to the second ball is calculated as follows;
F = Pf/t
F = (0.2904) / (0.01)
F = 29.04 N
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