identify the sub-level from which the electron is removed when the first ionisation energy of germanium is measured
Answers
The sub-level from which the electron is removed when the first ionisation energy of germanium is measured is the 4p² sub-level.
The first ionization energy of germanium is the energy required to remove one electron from a neutral germanium atom to form a positively charged ion.
To identify the sub-level from which the electron is removed when the first ionization energy of germanium is measured, you need to consider the electron configuration of germanium.
The electron configuration of germanium is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p². During the first ionization process, the electron will be removed from the outermost shell with the highest energy sub-level, which is the 4p² sub-level.
So, the sub-level from which the electron is removed when the first ionization energy of germanium is measured is the 4p² sub-level.
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Related Questions
Water has a heat of fusion of 6.01 kJ/mol. An iceberg in the Atlantic Ocean near Newfoundland contains 1.27 x 107 mol of water. How much thermal energy does it absorb as it melts? Answer using appropriate significant digits. Please record your work in your notes for future reference.
Answers
Answer:
7.63×10⁷ kJ
Explanation:
From the question given above, the following data were obtained:
Heat of fusion (Hբ) = 6.01 kJ/mol
Number of mole of water (n) = 1.27×10⁷ moles
Heat (Q) absorbed =?
The thermal energy absorbed can be obtained as follow:
Q = n•Hբ
Q = 1.27×10⁷ × 6.01
Q = 7.63×10⁷ kJ
Thus, 7.63×10⁷ kJ of thermal energy is absorbed.
A 10-N force is exerted on a box, moving it 20 m in the same direction. 20 m. According to the above diagram, what is the magnitude of work done on the box? A 2 J B 10 J C 30 J D 200 J Back
Answers
Explanation: 10-N* 20 m = 200 J
choose true or false for each statement regarding a converging lens.
Answers
False. A converging lens produces an enlarged real image when the object is placed beyond its focal point.
Determine whether converging lens produces an enlarged virtual image?A converging lens is thicker at the center and thinner at the edges. When an object is placed beyond the focal point of a converging lens, a real and inverted image is formed on the opposite side of the lens.
This image is larger than the object, hence producing an enlarged real image. The position of the image depends on the object's distance from the lens and follows the rules of image formation by lenses.
On the other hand, a virtual image is formed when an object is placed between the lens and its focal point. The virtual image is upright and larger than the object. However, for a converging lens, this virtual image is not enlarged but rather diminished compared to the object.
Therefore, a converging lens does not produce an enlarged virtual image when the object is placed just beyond its focal point.
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Complete question here:
Choose true or false for each statement regarding a converging lens.
true false A converging lens produces an enlarged virtual image when the object is placed just beyond its focal point.
A 127 N object vibrates with a period of 3.32 s when hanging from a spring. What is the spring constant of the spring? The acceleration of gravity is 9.81 m/s 2 . Answer in units of N/m.
Answers
Answer:
The spring constant is approximately 46.382 newtons per meter.
Explanation:
From Physics, the period (\(T\)), measured in seconds, experimented by an object under Simple Harmonic Motion:
\(T = 2\pi\cdot \sqrt{\frac{W}{g\cdot k} }\) (1)
Where:
\(W\) - Weight, measured in newtons.
\(g\) - Gravitational acceleration, measured in meters per square second.
\(k\) - Spring constant, measured in newtons per meter.
If we know that \(W = 127\,N\), \(g = 9.807\,\frac{m}{s^{2}}\) and \(T = 3.32\,s\), then the spring constant of the system is:
\(\frac{T^{2}}{4\cdot \pi^{2}} = \frac{W}{g\cdot k}\)
\(k = \frac{4\cdot \pi^{2}\cdot W}{g\cdot T^{2}}\)
\(k \approx 46.382\,\frac{N}{m}\)
The spring constant is approximately 46.382 newtons per meter.
A sailboat moves north for a distance of 10.00 km when blown by a wind from the exact southeast with a force of . The sailboat travels the distance in 1.0 h. How much work was done by the wind? What was the wind’s power? Your response should include all of your work and a free-body diagram.
Answers
Given that the direction sailboat is north and the distance traveled is d = 10 km
The direction of the wind is southeast and the force is
\(F\text{ =2}\times10^4\text{ N}\)The sailboat travels the distance in time, t = 1 h
We have to find the work done by the wind and wind's power.
The diagram is shown below
The work done by the wind will be
\(\begin{gathered} W\text{ =Fdcos}\theta \\ =2\times10^4\times10\times10^3\times\cos (135^{\circ}) \\ =-1.414\times10^8\text{ J} \end{gathered}\)The power of the wind will be
\(\begin{gathered} P=\frac{W}{t} \\ =\frac{-1.414\times10^8}{1\times60\times60} \\ =-3.93\times10^4\text{ W} \end{gathered}\)
Question 10 of 10
Two particles are separated by 0.38 m and have charges of 1.25 x 10-9C and
1.92 * 10-°C. Use Coulomb's law to predict the force between the particles if
the distance is doubled. The equation for Coulomb's law is F = kouse, and
the constant, k equals 9.00 x 109 Nm²/C2
A. -1,50x10-7N
B. -3.74 x 10-8N
C. 1,50 x 10-7N
D. 3.74 x 10-8N
SUBMIT
Answers
Answer:
Its d 3.74 x 10-8N
Explanation:
Answer: 3.74 x 10-8 N
Explanation:
A generator has 200 turns of wire on a coil of radius 2. 00 cm. What rotational speed is necessary to produce an emf of amplitude 4. 50 V if the magnetic field in the region of the coil is 0. 180 T?
a) 60. 5 rad/s
b) 995. 0 rad/s
c) 900 rpm
d) 200 rpm
Answers
A generator has 200 turns of wire on a coil of radius 2.00 cm.
Hence, the correct option is A.
The emf induced in a coil of N turns rotating with angular velocity ω in a magnetic field of strength B and area A is given by the formula:
emf = NBAωsin(ωt)
Where N is the number of turns, B is the magnetic field, A is the area of the coil, and t is time.
We can rearrange this formula to solve for ω
ω = emf / (NBA sin(ωt))
Plugging in the given values, we get
ω = (4.50 V) / [(200 turns)(π(0.02 m)²)(0.180 T) sin(1)]
ω = 60.5 rad/s
Therefore, 60.5 rad/s rotational speed is necessary to produce an emf of amplitude 4. 50 V if the magnetic field in the region of the coil is 0. 180 T.
Hence, the correct option is A.
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sparky knows that installing the new equipment and training workers to use it efficiently will be a long and complex process consisting of many different tasks. which of the following methods would help him determine how long this project is likely to take?
Answers
PERT (program evaluation and review technique) would help him determine how long this project is likely to take
PERT is a tool that project managers can use to determine the critical path, or the sequence of tasks that take the longest to finish a project.
PERT :
Each individual task needed to complete the project is listed on the program evaluation review technique (PERT) chart, which is a graphical representation of the timetable. The PERT chart is frequently chosen over the Gantt chart as a project management tool because it displays job dependencies. However, it might be more difficult to comprehend a PERT chart.
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Two students are lifting their books up from the floor. student 1 lifts his
book up in 0.41 s while student 2 lifts her equally heavy book up in 0.35 s. who is more powerful?
a)student 1
b)student 2
c)both are equally powerful
d)impossible to know
Answers
Based on the power equation, of the two students, more powerful student is student 2. Therefore, the correct option is B.
To determine who is more powerful, we can use the equation Power = Work/Time. Both students are lifting equally heavy books, so we can assume that the work done is the same for both of them. Therefore, the student who lifts their book up in a shorter amount of time will have a higher power output.
Using the given times, we can calculate the power output for each student.
Power1 = Work/Time1 = Work/0.41 s
Power2 = Work/Time2 = Work/0.35 s
Since the work done is the same for both students, we can compare their power outputs by comparing their respective times.
Student 1: Power1 = Work/0.41 s
Student 2: Power2 = Work/0.35 s
Since student 2 lifts her book up in a shorter amount of time (0.35 s), she has a higher power output than student 1. Therefore, the answer is (b) student 2 is more powerful.
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A compression spring with a spring constant of 200 N/m catches a ball that's falling with
kinetic energy of 0.5 J. How far will the spring compress to stop the ball?
Pls help It would be great if someone can show the steps too thank u
Answers
Answer:
distance of compression: 0.07071 m
Explanation:
\(\sf energy = \dfrac{1}{2} kx^2\)
\(\rightarrow \sf 0.5= \dfrac{1}{2} (200)x^2\)
\(\rightarrow \sf 0.5= (100)x^2\)
\(\rightarrow \sf 5\ *\ 10^{-3}= x^2\)
\(\rightarrow \sf x = \sqrt{5\ *\ 10^{-3}}\)
\(\rightarrow \sf x =0.07071 \ m\)
the back wall of an auditorium is 25.0 m from the stage. part a if you are seated in the middle row, how much time elapses between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall? the speed of sound in the air is 343 m/s .
Answers
The difference of time between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall would be 0.036s.
What does a sound wave echoe mean?An echo is a reflection of sound that comes to the audience with a delay after the direct sound in audio signal processing and acoustics. The delay is directly proportionate to the separation between the source and the listener of the reflecting surface. One the kind audio effect that involves significantly delaying a signal is an echo effect. In this instance, after some period of time, listeners hear the same signal repeated clearly. When there is a noticeable delay in the sound, listeners can differentiate individual echoes.
The person seated in the middle row:
The distance sound traveled to middle row => 25/2 = 12.5m
The total distance the sound traveled to full length of auditorium and to the middle row => 25+12.5 => 37.5m
t1 => d1/v => 12.5/343 => 0.036s
t2 => d2/v => 25/343 => 0.072s
t2-t1 => 0.036s
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the figures show snapshots of a rectangular loop as it passes from left to right through a region of constant magnetic field. the field points into the screen and is perpendicular to the plane of the loop. a square region of uniform magnetic field with the field pointing into the screen. the wire loop is to the left of and outside the field region. b square region of uniform magnetic field with the field pointing into the screen. the wire loop is entering the field region from the left side, but is still partially outside the field region. c square region of uniform magnetic field with the field pointing into the screen. the wire loop is completely inside the field region. d square region of uniform magnetic field with the field pointing into the screen. the wire loop is exiting the field region from the right side, but is still partially inside the field region. e square region of uniform magnetic field with the field pointing into the screen. the wire loop is to the right of and outside the field region. in which of the sequences is the magnetic flux through the loop decreasing?
Answers
A) a), B) a), b)i) ii) Because counterclockwise current can form a dot field, induced current is counterclockwise, C) Flux is constant and has non-zero value, D) a), b)i)ii) and E) a) flux is continuous and has a zero value because there isn't magnetic field inside the coil's vicinity.
Is there a rise or fall in the magnetic force through the loop?The intensity rapidly increases as the magnet gets closer to a coil until it is within the coil.The magnetic force through the coil starts to decrease as it moves through it.
Which way does the magnetic flux move while it is decreasing?The induced field must point in the reverse way to the external magnetic field if indeed the magnetic flux is rising.The two fields will, however, point the same way if the magnetic force is decreasing.
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FILL IN THE BLANK. when cycling forward in a straight line, the knee is rotating about a(n) ____ axis.
Answers
When cycling forward in a straight line, the knee is rotating about a(n) horizontal axis.
Cycling, often known as bicycling or biking when done on a two-wheeled bicycle, refers to the use of cycles for transportation, recreation, exercise, or sport. Cycling enthusiasts are known as "cyclists," "bicyclists," or "bikers." In addition to riding a two-wheeled bicycle, "cycling" also refers to using a recumbent bike or other comparable human-powered vehicles (HPVs), such as a unicycle, tricycle, or quadricycle.
Since their invention in the 19th century, bicycles have grown to almost one billion in number globally. In many regions of the world, especially in heavily populated European towns, they are the main form of transportation. For short to medium distances, cycling is widely regarded as an effective and efficient means of transportation.
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write a paragraph describing why you can sometimes see a double rainbow after it rains.Be sure to explain where the light comes from, what happens to it that makes it color, and how we see it. be very specific
Answers
fill in the blanks (about force)
depends on _____ and _____
Answers
. Work done by a force depends upon force applied and displacement produced.
how does fabric softener help prevent static electricity?
Answers
Answer:
Dryer sheets stop static cling by absorbing static electricity formed by different fabrics during your dryer cycle. The fabric softeners that coat dryer sheets are positively charged ions to balance the electrons and ions that cause static cling, leaving you with soft clothes without the static.
Explanation:
A block of mass 4 kilograms is initially moving at 5m/s on a horizontal surface. There is friction between the block and the surface which causes the block to come to a complete stop. The coefficient of kinetic friction between the block and the surface is 0.5. If the system is defined as the block only, which of the following statements would be correct?
A. There is a negative change in internal energy of the system as the block comes to a stop
B. There is a positive change in internal energy of the system as the block comes to a stop
C. There is a negative work done to the system as the block comes to a stop
D. There is a positive work done to the system as the block comes to a stop
Answers
Answer:
A
Explanation:
if block is only system then it's internal energy decreses . if horizontal surface is also part of system then energy remain conserve.
work is negative when F and d have opposite direction
A large pendulum (4.0 kg) is moving at 2.0 m/s and has mechanical energy of 68.0 J. What is the height of the pendulum in meters?
Answers
Answer:
Explanation:
m = 4.0 kg
v = 2.0 m/s
g = 10 m/s²
Mechanical energy of the pendulum = 68.0 J
Mechanical energy of the pendulum = Potential energy of the pendulum + Kinetic energy of the pendulum
mgh + 1/2 mv² = 68
4 × 10 × h + 1/2 × 4 × 2 × 2 = 68
40 h + 8 = 68
40 h = 68-8
40 h = 60
h = 60 / 40
h = 3/2 m
h = 1.5 m
Which of the following is best determined by applying the principles of relativity and uncertainty, as opposed to those of Newtonian physics? A. The position of a train B. The position of a particle in a particle accelerator C. The length of an accelerating sprinter D. The velocity of a bungee jumper
Answers
The position of a particle in a particle accelerator is the principles of relativity and uncertainty, as opposed to those of Newtonian physics. The correct option is B.
What is principles of relativity and uncertainty?The uncertainty principle, states that in the physical realm, it is impossible to know two quantities with complete accuracy at the same time, such as a particle's location and momentum.
The uncertainty principle is significant because it aids physicists in understanding how things work at the subatomic level.
The stance of a particle in a particle accelerator is determined by relativity and uncertainty principles, as opposed to Newtonian physics.
Thus, the correct option is B.
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Based on what you know about light and matter interactions, select all of the correct statements from the following list. a Absorption spectra have bright lines. Low-density hot gases produce emission spectra. Emission spectra have dark lines. 2 The size of an electron's orbit depends on its energy Atoms absorb energy by emisting photons. a Electrons will move to higher orbits when an atom absorbs enough energy a Hot solids emit continuous spectra.
Answers
The correct statements from the list are:
Low-density hot gases produce emission spectra.
Emission spectra have dark lines.
The size of an electron's orbit depends on its energy.
Electrons will move to higher orbits when an atom absorbs enough energy.
Hot solids emit continuous spectra.
What is an Absorption spectrum?An absorption spectrum is a pattern of dark lines or gaps in a continuous spectrum that is produced when light passes through a cooler gas or a cloud of gas. This pattern is caused by the gas absorbing certain wavelengths of light from the continuous spectrum.
Each element or molecule has a unique absorption spectrum, as they absorb different wavelengths of light based on the energy levels of their electrons. The absorption spectrum can be used to identify the presence of certain elements or molecules in a sample, as well as to study the physical and chemical properties of the gas.
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What cloud type signals the coming of a warm front?
(I don't think it's physics but I couldn't find a subject that fit)
Answers
Answer:
altocumulus, cirrocumulus and cumulonimbus are cloud types that signals a warm front
Explanation:
The subject is geography
4. Scenario: A car runs into a truck.
a. Identify two objects that are interacting (colliding) in this scenario)
One object is...
The other object is...
b. Identify the action and the reaction forces.
Answers
One object is a car and the other object is a truck. The action will be from the car while the reaction will be from the truck.
What happens when the objects collide?When the objects collide then one will be acting on the other while the receiver of the force reacts to it. After a collision, Newton's third law of motion comes into play.
At this time, the second body, the truck will exert a force that is the same in magnitude and opposite in the direction of the car which initiated the action. From this law of motion, we can deduce the actor and reactor.
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Calculate the net force of the object in the image shown 20N 15 N
Answers
What time is the lunar eclipse tonight in california?
Answers
A ninja applies a force of 1250-N to a piece of 4-inch solid oak with his fist. What is the size of
the force applied to the fist by the piece of oak?
Answers
Answer:
The force is 1250-N
Explanation:
Generally according to Newtons third law , which states that for every action there is an equal and opposite reaction
Now considering the question, the action here is the force applied by the ninja while the reaction is the force applied by the oak and from Newton law both of these action are equal but opposite to each other.
Hence the force applied by the the piece of oak on the fist is 1250 N
Need help in class right now
Answers
Answer:
2.05pm.
Explanation:
In the picture.
A cannon with a muzzle velocity of 500. meters per second fires a cannonball at an angle of 30.° above the horizontal. What is the vertical component of the cannonball's velocity as it leaves the cannon?
0.0 m/s
250. m/s
433 m/s
500. m/s
Answers
Complete question
A cannon with a muzzle velocity of 500. meters per second fires a cannonball at an angle of 30.° above the horizontal. What is the vertical component of the cannonball's velocity as it leaves the cannon?
A 0.0 m/s
B 250. m/s
C 433 m/s
D 500. m/s
Answer:
The correct option is C
Explanation:
From the question we are told that
The velocity is \(v = 500 \ m/s\)
The angle is \(\theta = 30^o\)
Generally the vertical component of the canon ball is mathematically represented as
\(v_y = v * cos (30 )\)
=> \(v_y = 500 * cos (30 )\)
=> \(v_y = 433 \ m/s\)
Answer:
250. m/s
Explanation:
It is vertical component so you do: 500mSin(30°) = 250m/s
The electric potential along the x-axis is V=100e?2x/mV, where x is in meters.
Part A
What is Ex at x=1.0m?
Express your answer as an integer and include the appropriate units.
ANSWER:
Ex = Part B
What is Ex at x=2.4m?
Express your answer to two significant figures and include the appropriate units.
ANSWER:
Ex =
Answers
Potential at each location is the sum of individual potentials at each position because both charges are equally spaced along the x axis and have the opposing charge, the potential along the x axis will be zero. Provide the proper units and treat the value as an integer.
According to the relation "V(x) = 4x2," the electric potential V(x) in a region along the X-axis varies with the distance x (in meters). E = -dV(x)/dx, where V is the derivative, and the answer is 100e2x/m(-2) V/m = 200e2x/m V/m.
E(1) = 200e2 V/m, or 27.067 V/m 27 V/m
E(x) at x=12.4m:
What is it?
E = -dV(x)/dx, where V's derivative is -100e2x/m (-2) V/m = 200e2 x/m V/m
E(1.6) = 200e21.6 V/m, 200e3.2 V/m, and 8.2 V/m
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what is the momentum of an animal with a mass of 72kg who is moving with a velocity of 2.2 m/s
Answers
Answer:
The answer is
158.4 kgm/sExplanation:
The momentum of an object when given it's mass and velocity can be found by using the formula
momentum = velocity × massFrom the question
velocity = 2.2 m/s
mass = 72 kg
The momentum is
momentum = 2.2 × 72
We have the final answer as
158.4 kgm/sHope this helps you
is 468km per minute describing speed or velocity