Using the concepts of Force,we got that 3N is the net force acts on the box if a man is trying to push a box across a table. He pushes on the box with 5 n and the table provides a frictional force of 2 n.
We know very well that every object is able to move on the surface of the earth is due to frictional force. If friction is absent then every object skids.
That frictional force always acts opposite in the direction of the movement of the body.
Here the amount of force exerted by a man is 5 N, while the amount of frictional force is 2N,means if 5N is acting on forward direction then 2N acts in opposite direction.
So, the net force acts on the body =Force exerted by man-Frictional force
=>Net force=(5N-2N)=3N
Hence, if A man is trying to push a box across a table. He pushes on the box with 5 n and the table provides a frictional force of 2 n, the net force on the box is 3n.
To know more about Force, visit here:
https://brainly.com/question/13191643
#SPJ4
a star with 4 times the sun's mass is about 100 times more luminous than the sun. its main sequence lifetime is
When it is given that that star has 4 times the sun's mass then main sequence lifetime is calculated as: 312.5 * 10 ^6 million years.
What is main sequence lifetime?A continuous and distinctive band of stars that appear on plots of stellar color versus brightness known as the main sequence. The color-magnitude plots are known as Hertzsprung–Russell diagrams.
The outer layers of star expand while the core is shrinking. As the expansion continues, the luminosity also increase.
Given mass of star is 4 times the sun, then
Main sequence lifetime is calculated as:
= 10^10 / 4^2.5
= 312500000
= 312.5 * 10 ^6 million years.
To know more about main sequence lifetime, refer
https://brainly.com/question/29052063
#SPJ4
a bicycle with wheels radius r is traveling with a linear velocity v and an angular velocity w. a second bicycle has the same linear velocity but wheels with twice the radius. what is the angular velocity of this bicycle's wheels?
The angular velocity of the second bike is twice the angular velocity of the first bike.
Let Linear velocity of bike 1=v
Let angular velocity of bike 1=w1
Let radius of bike 1 =r 1
Linear velocity of bike 2= v2(provided in the question)
Radius of bike 2= 2x Radius of bike 1 (provided in the question)
thus, radius of bike 2= 2 x r
let Radius be represented by R
Formula of angular velocity: 2π/t
Relation between angular velocity and linear velocity:
Linear velocity= angular velocity x Radius
v=w x R
Linear velocity of bike 1=v1=w1xR1
Let v1= v
Let R1= r
v=w1 x r
w1=v/r
Angular velocity of bike 1,
w1=v/r
Linear velocity of bike 2=v2=w2xR2
v2=w2xR2
v2=v1 (Provided in Question)
then, v2=v
R2=2 x R1 (Provided in Question)
then, R2= 2x r
R2=2r
then,
v2=w2xR2
putting values
v=w2x2r
w2=v/2r
w2= 1/2 x v/r
w2= 1/2 x(v/r)
w2=1/2 x(w1)
w2=2w1
Thus,
The angular velocity of the second bike is twice the angular velocity of the first bike
Learn more about angular and linear velocity at:
brainly.com/question/29313165
#SPJ4
5.what are typical operating temperatures (or at least the temperature available that can produce power) and pressures for orc?
55°C (131°F) is typical operating temperatures (or at least the temperature available that can produce power) and pressures for orc.
Heat or cold is measured in terms of temperature. It demonstrates how heat energy naturally flows from a hotter body to a cooler body and may be expressed in terms of any number of arbitrary scales (one at a lower temperature). A match is burning at a far greater temperature than an iceberg, yet an iceberg has a substantially higher total heat energy than a match. Temperature is not the same as the energy of a thermodynamic system.
Temperature, along with pressure, density, and other like qualities, is referred to as an intense property as opposed to extensive features, such as mass or volume—one that is independent of the quantity of stuff being addressed.
To know more about temperatures visit : https://brainly.com/question/14161300
#SPJ4
a mass is given a kick so that it slides up a ramp, (with friction). after the mass reaches its highest point, it slides back down. however, the magnitude of its acceleration is less on the descent than on the ascent. why? (assume that the angle of the ramp is large enough that when the mass momentarily stops at its highest point the force of static friction is insufficient to keep it there.)
The magnitude of the rock's acceleration a' is less on the descent than on the ascent.
Solution:
mass = m, angle of the ramp = A, friction force = f
when it is going up, net force F = mgsinA + f
acceleration a = F/m = gsinA + f/m
when it is going down, net force F' = mgsinA - f
acceleration a' = F'/m = gsinA - f/m
so a' < a
The magnitude of the rock's acceleration a' is less on the descent than on the ascent.
Push the blocks to slide up the ramp. After the block reaches the highest point, it slides down, but the magnitude of the acceleration is less on the descent than on the rise. Friction and gravity work together. Blocks decelerate rapidly. Descent Friction and gravity work in opposite directions. The block accelerates slowly. It doesn't take long to slide.
Learn more about The magnitude here:- https://brainly.com/question/24468862
#SPJ4
Which of the following is an example of a non-contact force? CHOOSE ALL THAT APPLY.
A duck floating on water
The moon orbiting the earth
Your Chromebook sitting on the desk
Pushing a child in a swing at the playground
Gravity pulls skydiver down towards the surface of the earth from an airplane
The moon orbiting the earth and Gravity pulls skydiver down towards the surface of the earth from an airplane are examples of a non-contact force
Non-contact forces are forces that act between two objects that are not physically touching each other.
That means that there is no contact but there exist force between them .The moon orbiting the earth due to gravitational force between both the bodies , this is a non contact force . Because moon is in not in contact with the earth , still both the bodies are exerting force on each other
Also Gravity pulls skydiver down towards the surface of the earth from an airplane is also an example of non contact force because there is no contact between skydiver and earth , still due to earth's gravitational force , it is been attracted towards the ground
To learn more about Non-contact forces here :
https://brainly.com/question/18451249
#SPJ1
When a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude f = ax, where a is a constant. The work done by a person in stretching this rubber band from x = 0 to x = l, beginning and ending at rest, is:.
When starting and ending at rest and stretching this cuff from x = 0 to x = l, the work involved is:. al²÷2
What exactly does science work on?A force's output is defined as the product of the force's component acting in the displacement's direction and its magnitude. Formula. The following formula can be used to determine work: multiply force by distance traveled in the direction of force. W = F × d.
What constitutes a work example?In our daily lives, we see many examples of work is being done. Several examples include a student carrying a bag full of books off his shoulder or back, a horse dragging a plow through a field, a father moving a supermarket cart at a mall, and many more.
Stretching the rubber band from x = 0 to x = L requires work.
[tex]W = \int\limits^L_0 {F} \, dx = \int\limits^L_0 {a} \, dx \\W = \frac{aL}{2}[/tex]
To know more about work done visit:
https://brainly.com/question/13662169
#SPJ4
A cyclist traveled 8 kilometers per hour faster than an in-line skater. In the time it took the cyclist to travel 65 kilometers, the skater had gone 39 kilometers. Find the speed of the skater.
The speed of the skater is 22km per hour.
What is speed?
speed is simply defined as The rate of change of position of an object in any direction.
Sol-so a cyclist is traveling 11 km/h faster than an incline skater. And the time it took the Travis the cyclists go, 18 km skater has gone nine, find the speed of the skater. Okay, so let's translate this like solving for X is Okay, let's say X is the speed of the skater. Um And then cyclists speed would be why uh the cyclist went faster than in line. So that would make 11 faster. That'd be like X plus 11. So, The cyclist is skater and 11 more. Cool. Okay, it took the cyclist 18 km. It took the skater, nine km the same amount of time. Okay, so what does that mean? Well, 18 divided by nine is to, so basically that means the the cyclist is well twice as fast as the as a skater really. And now we have these to form these ones, notice they both say y equals and that means well, since these wires are really the same thing, they're both the speed the cyclists, that means that you can actually just make both sides equal to each other. Um I'm sorry. That should be an equal sign. Why equals X plus, I love it. All right. And now you subtract X from both sides and then you find out that well, X is 11. So, that is the speedof the skater. The skater is going 11 kilometres ah for our um And that would mean the
Thus,
cyclist is going 22 kilometres per hour.
To know more about speed click -
https://brainly.com/question/24739297
#SPJ4
Why do political leaders look at the unemployment rates of other countries?
A. Because the unemployment rate is an indicator of the deflation
rates of currency
B. Because the unemployment rate can predict whether the price of
stocks will increase
C. Because the unemployment rate can determine whether the
country is in a period a of inflation
T D. Because the unemployment rate is a measure of the condition of
the economy
Competition from newly industrializing countries has also been blamed for rising unemployment in the OECD region.
What is Political and Economic Explanations for Unemployment ?This paper demonstrates that the widely accepted supply shock and real wage gap explanation of unemployment rate increases since 1973 has only limited empirical support.
The causes of unemployment are best understood by focusing on conflicts of interest in Western democracies, the distribution of power resources among major interest groups, and conflict strategies. Given economic constraints, unemployment appears to be the labor market manifestation of distributive conflict, with inflation and industrial disputes as alternatives.
Strategic action by government elites and long-term patterns in conflict resolution are major factors behind the two major transformations of Western unemployment levels – the introduction of full employment in the immediate postwar period and the return to high unemployment since 1973 – as well as variations in unemployment among the eighteen Western democracies.
To learn more about Cross-National and Long-Term Analysis refer to :https://brainly.com/question/27413958
#SPJ1
when a rifle is fired, which force is bigger? force on bullet, force on rifle, or would the magnitudes of these forces be the same?
What is magnitude?
Magnitude is a term used in physics to describe an object's maximal size and direction. Scalar and vector quantities both employ magnitude as a common factor. We are aware that scalar quantities are those that have just magnitude by definition. Those quantities with both magnitude and direction are considered vector quantities.Magnitude can be used in a variety of contexts. Among them are:
earthquake's magnitudeCharge density on an electronStrength of the forceSize of the displacementGravitational force strengthAn earthquake's size is measured in terms of its length, breadth, and width. It is calculated based on the earthquake's actual size.
However, A single magnitude is thought to exist for an earthquake.
To learn more about Magnitude do follow
https://brainly.com/question/24468862
#SPJ4
two mas 412 9. Derive the mathematical formula of the following: a. Acceleration due to gravity on the surface of the earth b. Escape velocity c. Torque interms of I and a
Acceleration due to gravity on the surface of the earth
g=GM/r2
Escape velocity v = √GM/r
torque in terms of I and a τ = l*a
The definition of torque is the product of the force's strength and the angle at which the force's line of action is perpendicular to the axis of rotation. Torque can also be understood in terms of the law of conservation of energy. The lowercase Greek letter tau is frequently used as the sign for torque.The speed at which an object moves to escape the gravitational pull of a planet or moon without developing propulsion is known as escape velocity.The acceleration due to gravity value of 9.8 m/s2 means that the velocity of a body falling freely changes by 9.8 m/s every second.
To know more about gravity, visit:
https://brainly.com/question/4014727
#SPJ9
the passanger liners Carnival Destiny and Grand Princess, built recently, have a mass of about 1.0x10^8 kg each. How far apart must these two ships be to exert a gravitational attraction of 1.0x10^-3 N on each other?
The correct answer is two ships are at distance of 2.6 Km.
What does gravity mean?
The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them, according to Newton's universal law of gravitation.
Given, m1=m2=1.0 ×10^8kg
Fg=1.0 ×10^−3N
G=6.673 ×10^−11(N•m2 / kg ²) (We all know)
Gravitational Force, F = G × [M1M2]/r2
Putting all the above data in our formula
r= √(Gm_1m_2/ Fg )
Distance = 2.6 x 10^4 m = 2.6 Km.
To learn more about Gravitational Force from the given link
https://brainly.com/question/72250
#SPJ9
a spring is compressed 5.0 cmcm. part a how far must you compress a spring with twice the spring constant to store the same amount of energy?
To find the springs compression, calculate the compression.
What is compression?
compression is the term for the reduction in volume of any item or material brought on by stress. Solids, liquids, gases, and living systems can all experience compression.
What is the purpose of a compression spring?
Automotive compression spring applications include springs in the seats that conform to the body and improve comfort, springs in the suspension that soften the impact of the road as the car travels, and even springs that support the automotive hoses.
The distance by which you compress a spring with twice the spring constant to store the same amount of energy is; 0.7071 times the initial distance of compression.
Therefore, the spring constant is store the same amount of energy is; 0.7071 times the initial distance of compression.
Learn more about compression from the given link.
https://brainly.com/question/7602497
#SPJ4
Kareen weighs 800n and sits at a distance of 4m from the pivot of a seesaw. zaid weighs 1200n. where should zaid sit to make sure the seesaw is balanced
Zaid should be sit at 2.6 m from pivot to make sure the see-saw is balanced.
A force or force system can rotate an object. A moment is a rotational action of force. Moments act clockwise or counterclockwise around a point. The point you select can be any point on the object, but typically the pivot point is selected.
The question is also based on Moment . For the seesaw to be balanced the moment caused by the weigh 800N of Kareen must be equal and opposite to the moment caused by the 1200 N weigh of Zaid.
A moment formula is equal to M = F x d
where , M ---> moment in N-m units
F---> force in Newton
d---> distance in meters
firstly , we calculate the force (F) resulting from the mass of each person.
Use newton's 2nd law , F = m x a .
The moment of the Kareen can be calculated using M = F x d,
moment= 800 (force or weight) x 4(distance from pivot) so, M = 3200 N-m.
The moment of the zaid must be equal and opposite to 3200N , so we have
3200 (moment) = 1200(force or weight) x d (distance).
If we divide this equation by 1200 we get 3200/1200 = d
which gives the d = 2.6m.
Hence, Zaid must sit 2.6m from the pivot to balance the seesaw with the Kareen.
To learn more about Moment or turning force, refer:
https://brainly.com/question/6278006
#SPJ4
d) find the power cunsumption in 22 ohms lamp and 4.5 ohms lamp ?
e) find the power delivered by the battery
Answer:
Explanation:
R₁ = 22 Ω
R₂ = 4.5 Ω
U = 45 V
Circuit resistance:
R = R₁ + R₂ = 22 + 4.5 = 26.5 Ω
Circuit current:
I = I₁ = I₂ = U / R = 45 / 26.5 ≈ 1.7 А
Lamp voltages:
U₁ = I₁·R₁ = 1.7·22 ≈ 37 V
U₂ = I₂·R₂ = 1.7·4.5 ≈ 8 V
Power:
P₁ = U₁·I₁ = 37·1.7 ≈ 63 W
P₂ = U₂·I₂ = 8·1.7 ≈ 14 W
P = U·I = 45·1.7 ≈ 77 W
a rocket is launched from the ground and travels in a straight path. the angle of inclination of the rocket's path is 1.35 radians. (that is, the rocket's path and the ground form an angle with a measure of 1.35 radians.) what is the slope of the rocket's path? if the rocket has traveled 68 yards horizontally since it was launched, how high is the rocket above the ground? yards at some point in time the rocket is 455 yards above the ground. how far has the rocket traveled horizontally (since it was launched) at this point in time? yards
109.539 yards far has the rocket traveled horizontally (since it was launched) at this point in time.
In arithmetic, the slope or gradient of a line is quite a number that describes each path and the steepness of the road. The slope is frequently denoted through the letter m; there is no clear answer to the question of why the letter m is used for slope, however its earliest use in English appears in O'Brien (1844)who wrote the equation of an instant line as "y = MX + b" and it could also be discovered in Todhunter (1888) who wrote it as "y = MX + c".
This generalization of the idea of the slope allows very complicated buildings to be planned and built that pass nicely past static systems which might be either horizontals or verticals but can change in time, flow in curves, and alternate depending on the rate of alternate different factors. Thereby, the simple concept of the slope will become one of the fundamental basis of the current world in phrases of each era and the built surroundings. The slope of a line within the aircraft containing the x and y axes is normally represented via the letter m and is defined because the change inside the y coordinate is divided through the corresponding exchange within the x coordinate, between distinct factors on the road.
To learn more about slope visit here:
brainly.com/question/3605446
#SPJ4
how much force is needed to make an 8kg object acccccelerate at a rate of 3.2m/s on a surface witha frictional force of 2.1n
The force is needed to make an 8kg object accelerate on a surface with a frictional force of 2.1n is 27.7 Newtons.
F = m x a
where
F = force exerted
m = mass of the object
a= the acceleration
m = 8 kg
a = 3.2m/s²
F = 8 x 3.2 = 25.6 N
So, net force required to overcome this friction and accelerate the object = 25.6 + 2.1 = 27.7 Newtons
The given question is incomplete. complete question is :
how much force is needed to make an 8kg object accelerate at a rate of 3.2m/s² on a surface with a frictional force of 2.1n.
The force is needed to make an 8kg object accelerate on a surface with a frictional force of 2.1n is 27.7 Newtons.
To know more about force
https://brainly.com/question/13942878
#SPJ4
A train is traveling at 30 m/s. How long does it take for the train to travel 60,000 m (60 km)?
A. 0.33h
B.0.5h
C. 33h
D. 0.56h
Answer:
0.5h
Explanation:
The train is traveling 30 m/s, which is 67.1080888 mph.
The train is traveling 60 km, which is 37.2823 miles.
37.2823 miles / 67.1080888 miles per hour = 0.55555597941 hours
0.5 Hours
at an instant when the induced current in the circuit is counterclockwise and equal to 1.73 a , what is the magnitude of the velocity of the bar?
The magnitude of the velocity of the bar at an instant when the induced current in the circuit is counterclockwise and equal to 1.73 A is 24.62 m / s
I = B l v / R
I = Induced current
B = Magnetic field
l = Length of bar
v = Velocity
R = Resistance
I = 1.73 A
B = 1.34 T
l = 0.293 m
R = 5.55 Ω
v = I R / B l
v = ( 1.73 * 5.55 ) / ( 1.34 * 0.293 )
v = 9.6 / 0.39
v = 24.62 m / s
Therefore, the the magnitude of the velocity of the bar is 24.62 m / s
The given question is incomplete. The complete question is :
A 0.293m -long bar moves on parallel rails that are connected through a 5.55 Ω resistor, as shown in the following figure (Figure 1) , so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform magnetic field 1.34T that is directed into the plane of the figure. At an instant when the induced current in the circuit is counterclockwise and equal to 1.73 A, what is the magnitude of the velocity of the bar?
To know more about Induced current
https://brainly.com/question/3712635
#SPJ4
a ruby laser emits light of wavelength 694.3 nm. if this light is due to transitions from the n 2 state to the n 1 state of an electron in a box, find the width of the box.
The width of the box is 0.795nm.
Solution:
d = 694-3x[tex]10^{-9}[/tex]m.
The energy [tex]\left[\begin{array}{ccc}E_{n} =\frac{h^{2} n^{2} }{smL^{2} } \end{array}\right][/tex]
Transition energy is related to the emitted photon
wavelength by ΔE = [tex]\frac{h^{2}c^{2} }{8mc^{2 }L^{2} } (2^{2} -1^{2} ) = \frac{hc}{h}[/tex]
∴ L = [tex]\sqrt{\frac{3hch}{8mc^{2} } }[/tex]
= [tex]\sqrt{\frac{3*1.24*10^{3}*694.3 }{8*511*10^{3} } }[/tex]
= 0.795 x [tex]10^{-9}m[/tex]
= 0.795nm.
The first dimension is to measure its length. The length is always the longest side of the flapped box. The next dimension is width. The wide side also has a flap, but it is always shorter on the side than the length. To find the width, multiply the specified length by 2 and subtract the result from the girth.
Now you know the total length of the remaining two pages. Divide this number by 2 to get the width. For a standard box, length is the longer of the two sides width is the shorter of the two sides and height is the vertical dimension from top to bottom.
Learn more about An electron here:-https://brainly.com/question/860094
#SPJ4
A ball is thrown vertically upward with an initial velocity of 29. 4 meters per second. What is the maximum height reached by the ball? [neglect friction. ].
Answer:
44 m
Explanation:
vf = velocity at highest point = 0
vf = vo + at
0 = 29.4 + (-9.81 )t shows t = ~ 3 s
d = vo t + 1/2 a t^2
d = 29.4 ( 3) + 1/2 ( -9.81)(3^2 ) = 44 m
the ability of torricelli's hypothesis about atmospheric pressure to suggest the design of the barometer is an illustration of:
The ability of Torricelli's hypothesis about atmospheric pressure to suggest the design of the barometer is an illustration of Fruitfulness
A barometer is a scientific instrument used to measure the air pressure in a certain environment. The atmospheric pressure measured is also known as barometric pressure. The pressure is measured in terms of atmosphere ( atm ) or bars. One bar / atm = 100 KPa
A glass tube closed at one end is submerged in a bowl filled with mercury and raised the tube but not above the mercury surface. The weight of the mercury pulled it down and left a partial vacuum at the closed end. This proved that gas has mass by creating pressure on things around it.
Therefore, the ability of Torricelli's hypothesis about atmospheric pressure to suggest the design of the barometer is an illustration of Fruitfulness
To know more about Torricelli's hypothesis
https://brainly.com/question/17212070
#SPJ4
directions on file pls help
√10 N Force is the resultant Force in the given diagram.
3N towards north
1 N towards West
Resultant= √3²+√1²
Resultant= √10 Newton
Every action that attempts to maintain, modify, or change the motion of a body is referred to as a force in mechanics. In his Principia Mathematica, Isaac Newton frequently used his three laws of motion to demonstrate the concept of force (1687).
According to Newton's first law, a body will remain in either its resting or equally moving condition along a straight route in the absence of an external force. The second law states that when an external force acts on a body, the body accelerates (changing velocity) in the direction of the force.
To know more about force visit : brainly.com/question/13191643
#SPJ1
Electronic relaxation, the change in molecular electronic structure as a response to oxidation, is investigated in [FeX4]2-,1- (X = Cl, SR) model complexes. Photoelectron spectroscopy, in conjunction with density functional methods, is used to define and evaluate the core and valence electronic relaxation upon ionization of [FeX4]2-. The presence of intense yet formally forbidden charge-transfer satellite peaks in the PES data is a direct reflection of electronic relaxation. The phenomenon is evaluated as a function of charge redistribution at the metal center (Δqrlx) resulting from changes in the electronic structure.
It is found that electronic relaxation is very large for both core (Fe 2p) and valence (Fe 3d) ionization processes and that it is greater in [Fe(SR)4]2- than in [FeCl4]2-.
What is Photoelectron spectroscopy?When attempting to ascertain the various positions of an electron within an atom, the term "photoelectron spectroscopy" refers to a specific sort of spectroscopic technique. Because of this, when examining the valence shell, it is necessary to consider the electron's ionisation energy.By measuring the relative energy of electrons in atoms and molecules, the experimental method of photoelectron spectroscopy (PES) is used. PES is frequently used by scientists to examine the atomic structure of materials or to describe molecular bonding.UV photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy are typically used as the field's two arbitrary classifications (XPS). The names are based on the energy of the photons that were used in that specific spectroscopy.To learn more about Photoelectron spectroscopy refer to:
https://brainly.com/question/29363677
#SPJ4
If a wave has a wavelength of 50 m and is traveling through water that is 30 m deep, what kind of wave is this?.
The wave's wavelength in this instance is 50 m, while the water's depth is 30 m.
Since half of the wave's wavelength is 25 m., the water's depth is greater than half of the wave's wavelength. Consequently, the wave is one that occurs in deep water.
Let's first understand waves so we can better understand travelling waves. A wave is a disturbance in a medium that propagates while transferring momentum and energy without the medium itself moving. However, the medium needs to be elastic. There are many examples of waves in daily life, such as ocean waves, musical instrument strings, etc. A wave that travels through the medium, on the other hand, is one in which the minimum and maximum amplitude positions are stationary.To know about wave's wavelength -
https://brainly.com/question/9780095
#SPJ4
light strikes a sodium surface, causing photoelectric emission. the stopping potential for the ejected electrons is 5.0 v, and the work function of sodium is 2.2 ev. what is the wavelength of the incident light?
The energy of an incident photon is E=hf, where h is the Planck constant, and f is the frequency of the electromagnetic radiation. The kinetic energy of the most energetic electron emitted is
Km =E−Φ=(hc/λ)−Φ
where Φ is the work function for sodium, and f=c/λ, where λ is the wavelength of the photon. The stopping potential Vstop is related to the maximum kinetic energy by eVstop =
Km,so
eVstop = (hc/λ)−Φ
and
λ= hc / eVstop+Φ = 1240eV⋅nm / 5.0eV+2.2eV = =170nm
Here eVstop =5.0eV and hc=1240eV⋅nm are used.
Note: The cutoff frequency for this problem is
f0 = hΦ (2.2eV)(1.6×10 −19J/eV) / 6.626×10 −34 J.s = 5.3×10 14Hz
The wavelengths of the visible mild range between 400-700 nanometers, that is among the infrared having longer wavelengths and the ultraviolet having shorter wavelengths. The wavelength of the visible mild suggests that its frequency is about 430-750 terahertz (THz).
The wavelength of light is the space between corresponding factors in two adjoining mild cycles, and the frequency of mild is the quantity of cycles of mild that skip a given factor in a single second.
Learn more about wavelengths here:- https://brainly.com/question/3476548
#SPJ4
A certain solid substance that is very hard, has a high melting point, and is nonconducting unless melted is most likely to be.
Answer:
NaCl (Sodium Chloride)
Explanation:
This is the answer
a horizontal force of 8,000 newtons is required to pull a 2,548 kilogram truck across the floor at constant speed across the road. what is the coefficient of kinetic friction?
The coefficient of kinetic friction is 0.314.
Friction is the force resisting the relative motion of sturdy surfaces, fluid layers, and material factors sliding towards each specific. There are numerous styles of friction: Dry friction is a strain that opposes the relative lateral movement of two stable surfaces in touch.
Calculation:-
Force = 8000 N
mass = 2548 kg
a = f/mass
= 8000 / 2548
= 3.14 m/s²
Force = μkN
N = mg
= 2,5480 N
μk(coefficient of kinetic friction) = Force / N
= 8000/ 2,5480
= 0.314
Friction is the shape of contact pressure. It exists between the surfaces that are in touch. The frictional force relies upon the character of the floor in contact. The rougher the ground, the extra friction is involved. The frictional force is proportional to the urgent pressure, which is the burden of the body. it's miles impartial of the place of the touch.
Learn more about friction here:-https://brainly.com/question/24338873
#SPJ4
do the temperature patterns under a) low emissions and b) high emissions differ from the medium emissions model? if so, how?
The temperature patterns under low emissions and high emissions differ from the medium emissions model by having different temperature rise.
A temperature pattern describes the temperature of a place in Earth. It is highly influenced by the strength of the sun. The strength of the sun is highly dependent upon how high it rises in the sky during the day. It is also influenced by the emissions in the area which is responsible for global warming.
As the name suggests low emission model has lower emission, high emission model has high emission and medium emission model will have medium emission. As emission increase, the temperature will also increase. So there will be different temperature patterns in all these models.
Therefore, the temperature patterns under low emissions and high emissions differ from the medium emissions model.
To know more about temperature patterns
https://brainly.com/question/14661210
#SPJ4
a bobsled team emerges from a downhill track onto a horizontal straight track intended to slow the sled to a stop. the total mass of the bobsled and team is 488 kg. they emerge with speed 54 m/s. if the frictional force slows them to a stop at a constant 3.1 m/s2, how much work is done on the bobsled team while they stop?
Work is done on the bobsled team while they stop is 13,176 Nm
Work, in physics, degree of electricity switch that happens when an item is moved over a distance with the aid of an outside pressure at the least a part of that is carried out in the route of the displacement.
Calculation:-
mass = 488 Kg
speed = 54 m/s
a = 3.1 m/s²
displacement
V² = U² - 2as
0 = 54 - 2× 3.1 S
S = 54/6.2
= 8.71 m
Work done = force × displacement
= mass × acceleration × displacement
= 488 × 3.1 × 8.71
= 13,176 Nm
The work done via a pressure is the made of the displacement and the issue of the implemented force of the item within the path of displacement. while we push a block with a little force. The body moves with some acceleration, and work is executed. The paintings finished by pressure are defined to be manufactured from a thing of the pressure within the direction of the displacement and the significance of this displacement.
Learn more about work done here:-https://brainly.com/question/25573309
#SPJ4
what is the total (kinetic plus potential) energy of the international space station orbiting the earth?
The total energy of the international space station orbiting the earth is -μ/2a.
The total energy is the sum of kinetic energy and potential energy.
E = [tex]E_{k}[/tex] + [tex]E_{p}[/tex]
= v²/2 - μ/r
= -1/2 μ²/ h² (1-e²)
= -μ/2a
Here v = relative orbital velocity
r = orbital distance between the bodies
μ = G(m1 + m2) = the sum of the standard gravitational parameters of the bodies.
h = specific relative angular momentum in the sense of relative angular momentum.
e = orbital eccentricity
a = semi-major axis
Therefore we get the total energy is -μ/ 2a.
To know more about the total energy of the internal space refer to the link given below:
https://brainly.com/question/19466094
#SPJ4
