If the troughs of the atomic orbitals overlap with each other and indicate out-of-phase combinations then they interact destructively.
However, (+), and (-) pair of atomic orbitals interact destructively.
In Chemistry, molecular orbital theory(MOT) indicates that atoms merge together to form atomic orbitals in a molecule. Atomic orbitals overlap to form molecular orbitals.
In a molecule, there are two types of orbitals: bonding orbitals (BO) and anti-bonding orbitals(ABO).
According to MOT theory, when atoms join together through atomic wavefunction then the electrons display wave-like nature.
The presence of electrons in the bonding orbitals increases the molecular stability increases as compared to their presence in anti-bonding orbitals.
To put it simply, when only the crusts of waves overlap in molecule orbitals they form constructive interference while overlapping of troughs causes destructive interference.
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a baseball pitcher throws a fastball at a speed of 37 m/s. the acceleration occurs as the pitcher holds the ball in his hand and moves it through an almost straight-line distance of 3.5 m. calculate the acceleration, assuming that it is constant and uniform.
The acceleration of the ball during the throwing motion is 5.28m/s².
Acceleration is defined as rate of change of velocity w.r.t time.
a = dv/dt
velocity is the rate of change of displacement with respect to time.
final velocity ,
v = 37m/s
initial velocity,
u = 0m/s
distance, s = 3.5m
acceleration = ?
equation of motion describes simple Concept of the motion make position, velocity, acceleration of an object.
Using the equation of motion
v² = u² + 2as
using above values we get
(37)² =(0)² + 2× a × 3.5
a = 37/7
a = 5.28m/s²
The acceleration of the ball during the throwing motion is 5.28m/s².
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the takeoff speed for an airbus a320 jetliner is 78 m/s . velocity data measured during takeoff are as follows:
The acceleration of the Jetliner during takeoff = 2.1 [tex]m/s^2[/tex]
The given dataset of time in seconds and takeoff speed in m/s is:
t (s) v(m/s)
0 0
10 21
20 42
30 63
As we can see the rate of change of velocity (Δv) is uniform in each interval.
That is, in each interval, Δv = 21 m/s and Δt = 10s
We need to find the jetliner's acceleration during the takeoff.
Acceleration of a moving body is defined as the rate of change of velocity. Here since the rate of change of velocity is constant, we can simply use the following formula to find the acceleration.
Acceleration during takeoff, a = Δv / Δt = 21/10 = 2.1 [tex]m/s^2[/tex]
The question is incomplete. Find out the complete question here:
The takeoff speed for an airbus a320 jetliner is 78 m/s . velocity data measured during takeoff are as follows:
t (s) v(m/s)
0 0
10 21
20 42
30 63
What is the jetliner's acceleration during takeoff, in m/s2?
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reid runs away from jarharri after an intense political debate. his initial acceleration is 0km/h and his final acceleration is 25km/hour in 10 seconds. what is reid's average acceleration? pls explain the answer. 100 POINTS!!h
Reid runs away from Jarharri after an intense political debate. The average acceleration of Reid will be 0.69 m/s².
What is Acceleration?Acceleration is like the angry, fire-breathing dragon of motion variables in comparison to displacement and velocity. It can be dangerous, some people find it frightening, and if it's large, it makes you pay attention. You can feel yourself accelerating in scenarios like sitting in a plane during takeoff, slamming on the brakes in a car, or speeding around a corner in a go-kart.
Acceleration is of various types :
Uniform AccelerationNon-Uniform AccelerationAverage Acceleration.According to the question, the given values are :
Initial velocity, u = 0 km/hr,
Final Velocity, v = 25 km/hr
v = 25 × (5/18) = 6.9 m/s and,
Time, t = 10 seconds
Now, use the Equation of motion :
v = u+at
6.9 m/s = 0 + a (10 sec)
a = 6.9/10
a = 0.69 m/s²
Hence, the acceleration that we get here is 0.69 m/s².
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what are the components of the displacement vector from camp to summit? choose the x axis east, y axis north, and z axis up.
Consider east-west direction along x-axis and north-south direction along y-axis, x = x- component of the displacement vector = - 4580 Sin32.4 = - 2454.1 m
y = y- component of the displacement vector = 4580 Cos32.4 = 3867.02 m
z = z-component of the displacement vector = 2450 m
magnitude of displacement vector is given as
magnitude = sqrt(x² + y² + z²) = sqrt((- 2454.1)² + (3867.02)² + (2450)²) = 5194.13 m
Work is the result of displacement and a part of force acting in the displacement direction. 2. The result of force and displacement is work. 3. Work is a result of force and a part of displacement that moves in the force's direction.
When examining a force's geometric representation or its algebraic equivalent, the components of a force can be viewed as horizontal and vertical changes. The vertical and horizontal forces that combine to create the resulting force are represented by a force's components.
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A plane travels 2.5km at an angle of 35 degrees to the ground and then changes direction and travels 5.2km at an angle of 22 degrees to the ground. What is the magnitude and direction of the plane's total displacement?
The magnitude and direction of the plane's total displacement will be 7.66 km, 26.20° to the ground.
What is displacement?It should be noted that displacement is a vector quantity which explains the change in the distance to the overall change in position of the object.
The sine and cosine function can be used to solve for the resultant x and y components.
Resultant x = 2.5 cos 35 + 5.2 cos 22
= 6.87 km
Resultant y = 2.5 sin 35 + 5.2 sin 22
= 3.38 km
The resultant displacement is calculated using hypotenuse equation:
displacement = ✓(6.87² + 3.38²)
displacement = 7.66 km
The resultant angle will be:
θ = tan^-1 (3.38 / 6.87)
θ = 26.20°
Therefore the magnitude and direction will be 7.66 km, 26.20° to the ground.
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if an electron is released from infinity, how fast will it be traveling after falling to within 1 x 10-10 m of a proton?
If an electron is released from infinity, after falling to within 1x10-10 m of a proton its speed will be 2.25x10^-6 m/s.
What is speed?
Speed is typically characterized as rapidity in motion, travel, or action; swiftness; and celerity. The speed of light and the speed of sound are two instances of speed. Speed of motion or forward movement; relative quickness in moving, progressing, etc.: we're moving really quickly. the fullest, highest, or most efficient pace of motion: The car just needs nine seconds to accelerate to its top speed. According to special relativity, the maximum speed at which energy or information may move is equal to the speed of light in a vacuum, which is equal to c = 299792458 meters per second (about 1079000000 kilometers per hour or 671000000 mph).
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I NEED HELP ASAP!!!
23. Formulating Hypotheses Suppose you want
to know if objects with different masses fall to
the ground at different rates. State a hypothesis
about falling objects.
24. Designing Experiments Explain how you can
test the hypothesis in Question 23. What will be
the manipulated variable in your experiment?
What will be the responding variable?
I already have a hypothesis for 23 I just need to know how I will test my hypothesis.
Also I don’t know if Im right but would the manipulated variable be the Weight??
A plausible hypothesis in this case is; "different masses of objects fall to the ground at different rates".
What is a hypothesis?A hypothesis is a plausible explanation for an observation. A hypothesis is always formulated prior to an experiment. The experiment would now confirm or disprove the hypothesis that has been put forward.
Recall that an experiment must have a dependent variable and an independent variable. The independent variable is the variable that we have to continue to manipulate while the dependent variable is the variable that dependent variable changes with the independent variable.
A plausible hypothesis in this case is; "different masses of objects fall to the ground at different rates". The independent variable would now be mass of the object while the dependent variable would be the rate at which the object falls.
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A series of pulses, each of amplitude 0.1m, is sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude.(i) What is the net displacement at a point on the string where two pulses are crossing? Assume the string is rigidly attached to the post.(a) 0.4 m(b) 0.3 m(c) 0.2 m(d) 0.1 m(e) 0
(e) The net displacement at a point on the string is zero.
The term "displacement" refers to a shift in an object's position. It has a magnitude and a direction, making it a vector quantity. An arrow pointing from the starting point to the finishing point serves as its symbol.
A string that is connected to a post at one end is used to transmit a sequence of pulses, each measuring 0.1 meters in amplitude.
At the post, the pulses are reflected and return along the string without losing any of their amplitude.
Now, let's say the post is firmly fastened to the string.
The pulse will then be inverted upon reflection if one of the endpoints is fixed. As a result, when they collide, they cancel one another, leaving the amplitude at zero. As a result, the displacement at a string position where two pulses intersect is zero.
The correct option is (e).
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Is a rocket in the process of launching, Balanced or Unbalanced force?
The forces during rocket launching are unbalanced as, without unbalanced force, there can not be any motion.
Forces constantly balance and become out of balance during a rocket flight. On the launch pad, a rocket is balanced. Gravity tries to pull the rocket down, but the surface of the pad pushes it upward.
When the rocket's engines are lit, the thrust from them causes the forces to become out of balance, which causes the rocket to ascend. For a rocket to launch from a launch pad or for a spacecraft to change speed or direction, an unbalanced force must be applied.
Therefore, when the rocket is in the process of launching, the forces that act on the rocket are unbalanced.
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A foam dart is fired a height of 1.69 m. How many seconds does it take to hit the ground
Answer:
.587 s
Explanation:
d = 1/2 a t^2
1.69 m = 1/2 ( 9.81 m/s^2) (t^2)
t = .587 s
A proton moves at 0.950 c . Calculate its (b) total energy,
The total energy of the proton is 2882.31 MeV.
We need to know about relativistic energy to solve this problem. The rest energy of the object can be determined by
Eo = m₀ . c²
where Eo is rest energy, m₀ is rest mass and c is speed of light (3 x 10⁸ m/s).
The total energy of object can be described as
E = Eo / √(1 - v²/c²)
where E is total energy, v is the object speed.
From the question above, we know that :
m₀ = 1.6 x 10¯²⁷ kg
c = 3 x 10⁸ m/s
v = 0.95c
Find the rest energy
Eo = m₀ . c²
Eo = 1.6 x 10¯²⁷ . (3 x 10⁸)²
Eo = 1.44 x 10¯¹⁰ joule
Eo = 1.44 x 10¯¹⁰ / (1.6 x 10¯¹⁹) eV
Eo = 900 x 10⁶ eV
Eo = 900 MeV
Determine the total energy
E = Eo / √(1 - v²/c²)
E = 900 / √(1 - (0.95c)²/c²)
E = 900 / 0.31
E = 2882.31 MeV
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What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?.
E = 1.024 10⁻⁷ N/C is the size of an electric field where a proton experiences an electric force that is equal to its weight.
What is an electric field?The term "electric field" refers to the physical field that surrounds electrically charged particles and pulls or attracts all other charged particles nearby. Additionally, it describes the physical environment of a system of charged particles.
The answer to the question is that the electric force's strength is proportional to its weight.
F(q) = Weight.
F(q) = E × q
where;
E = electric field magnitude
q = charge on an electron.
Therefore;
E × q = m × g
E = (1.67 × 10^-27 × 9.81)/1.60× 10^-19
E = 1.024 × 10^-7 N/C
Therefore, the magnitude of the electric field is E = 1.024 10⁻⁷ N/C.
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if the outside air temperature increases during a flight at constant power and at a constant indicated altitude, the true airspeed will
If the outside air temperature increases during a flight at constant power and at a constant indicated altitude, the true airspeed will Increase and true altitude will increase.
What is Altitude?This refers to the vertical elevation of a body and is the measurement of the height above the sea or ground level. An airplane's altitude is directly proportional to the airspeed as long as the power is constant.
This means that increase in airspeed will lead to an increase in altitude and vie versa. This is the reason why as it runs fast, it can be observed that it begins to elevate.
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During eeg measurements, 6-10 electrodes are attached to the scalp and produce line drawings that represent __________. a. brain patterns b. mental activity c. x-rays d. brain waves please select the best answer from the choices provided a b c d
During eeg measurements, 6-10 electrodes are attached to the scalp and produce line drawings that represent brain waves.
EEG stands for electroencephalogram and eeg measurements refer to the recording of brain activities in the form of neuron signals.
In this test, micro sized sensors or electrodes are attached to the head or scalp of a person and electrical signals are recorded released by the brain neurons.
On the EEG recorder, the brain activities show up in the form of wave signals or wavy lines indicating that brain communicates through electrical currents signals.
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Answer:
brain waves
Explanation:
How long would it take the Concorde to travel the 6265 km between New York City and London England, assuming that the jet travels at its maximum speed of 2,150 km/h during the entire trip?
Answer:
2.9 Hrs
Explanation:
Time = Distance/velocity
6265 / 2150 ≈ 2.9 hrs
Answer each question yes or no. (a) Is it possible for each of three stationary charged particles to exert a force of attraction on the other two? (b) Is it possible for each of three stationary charged particles to repel both of the other particles? (c) Is it possible for each of three current-carrying metal wires to attract the other two wires? (d) Is it possible for each of three current-carrying metal wires to repel the other two wires? André-Marie Ampère's experiments on electromagnetism are models of logical precision and included observation of the phenomena referred to in this question.
(a) No, it is not possible if one attract other two then it means rest of two have some sign of charge which repel to each other.
(b)Yes, similarly & it is not possible
(c) Yes, Two current carrying having same direction current, it
attract, If one attract others two it means all have same direction. Hence it is true
(d) (Not possible) Because of one repel other two it means other two have same direction which attract to each other.
What is the force of attraction called?Gravity is an invisible force that pulls things toward Earth. Actually, there are other places with gravity than our planet. Every thing in the universe possesses gravity, including you and the stars, planets, and moons. All objects are attracted to one another by gravity.
Every thing on Earth experiences weight, or a gravitational pull produced by the mass of the planet that is proportional to the object's mass. A measure of the force of gravity is the acceleration that freely falling objects experience.
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GP A series RLC circuit contains the following components: R=150Ω, L=0.250H, C=2.00µF, and a source with Δ Vmax=210V operating at 50.0Hz. Our goal is to find the phase angle, the power factor, and the power input for this circuit. (a) Find the inductive reactance in the circuit.
Review. (a) Show that a magnetic dipole in a uniform magnetic field, displaced from its equilibrium orientation and released, can oscillate as a torsional pendulum (Section 15.5) in simple harmonic motion.
The answer is τ is proportional to θ
What is SHM?A motion in which the restoring force is directly proportional to the body's displacement from its mean position is known as a simple harmonic motion, or SHM. This restoring force always moves in the direction of the mean position. The French mathematician Joseph Fourier made the discovery that any regularly recurring motion or wave, regardless of how complex its shape, may be thought of as the sum of a collection of straightforward harmonic motions or waves in 1822.
Consider a magnetic dipole that has been liberated from its equilibrium orientation in a homogeneous magnetic field. Let the angle between the magnetic moment and the magnetic field be θ. The torque on the dipole due
to the external field is, τ=μXB
and magnitude of, τ=μB sinθ
if the angle is small, then, τ=μBθ
or, τproportionalθ
which is the equation for a restoring torque, so the dipole tends to turn the dipole toward its equilibrium
orientation if displaced from its original position. So a magnetic dipole in a uniform magnetic field can oscillate as
a torsional pendulum in SHM if displaced from its equilibrium position.
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Describe how atoms form positive ions by losing electrons or negative ions by gaining electrons
Atoms form positive ions by losing electrons or negative ions by gaining electrons through a special type of chemical combination called electrovalent or ionic combination.
How atoms of sodium and chlorine combine together to form their ionsIt follows that metals are electropositive elements which donates its valence electrons to the nonmetals. The atoms which donates its electrons become positively charged while the species that recieve electrons become negatively charged.
In the formation of sodium chloride, sodium donates its 1 valence electron to chlorine become positively charged; Na+ and chlorine which recieves the electron to add to it's 7 valence electrons become negatively charged; Cl-
Na + Cl ---- Na+Cl-
So therefore, atoms form positive ions by losing electrons or negative ions by gaining electrons through a special type of chemical combination called electrovalent or ionic combination.
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M A family ice show is held at an enclosed arena. The skaters perform to music with level 80.0 dB . This level is too loud for your baby, who yells at 75.0 dB. (a) What total sound intensity engulfs you?
A family ice show is held at an enclosed arena. The skaters perform to music with level 80.0 db. This level is too loud for your baby, who yells at 75.0 db. 155 is the total sound intensity can engulf me.
What is intensity?In physical science, the force or motion of brilliant energy is the power moved per unit region, where region is estimated on the plane opposite to the heading of spread of the energy.
The formula for intensity is given by, I = P A. Where I am the intensity, P is the power and A is the area of cross section.
Light force assumes an essential part. With expanded light the fish' s vision improves, and they will turn out to be more careful about hunters. The sun' s point decides how much light entering the water. As would be normal, the most elevated measure of sun-based force happens on the globe right where the sun is above and as the point of the sun brings down, the sun-oriented power declines.
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A string of length L , mass per unit length μ , and tension T is vibrating at its fundamental frequency. (i) If the length of the string is doubled, with all other factors held constant, what is the effect on the fundamental frequency?(a) It becomes two times larger.(b) It becomes √2 times larger. (c) It is unchanged.(d) It becomes 1 /√2 times as large. (e) It becomes one-half as large.
Fundamental frequency will be [tex]\frac{1}{{2} }[/tex] times that of original frequency on doubling the length of the string which is option (e) .
Fundamental frequency, also called simply fundamental wave, is defined as the lowest frequency of a periodic waveform. In music, the root is the pitch of the note that is perceived as the lowest partial present.A wave traveling on the string is reflected at the other end. Standing waves are created as a result of interference between incident and reflected waves propagating in opposite directions. The fundamental frequency of the standing wave of a taut string is given by [tex]f=\frac{1}{2l} \sqrt{\frac{T}{u} }[/tex] ....(1) where T is the tension in the string, u is the mass per unit length of the string , l is the length of the string.From equation (1) it can be seen clearly that fundamental frequency in inversely proportional to the length of the string.
On putting double the length of the string in equation (1) keeping the all factor same , we get
[tex]f'=\frac{1}{2\times2l} \sqrt{\frac{T}{u} }\\\\f'=\frac{1}2 } f[/tex]
Where f ' is the new frequency and f is the original frequency .
Thus, If the length of the string is doubled, with all other factors held constant, then the fundamental frequency will reduce to half.
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Fill in the blanks to complete the statements.
If an object changes speed or
, its velocity also changes. Any change in ______ results in acceleration.
Answer: velocity
Explanation: Acceleration = change in velocity / time interval
5m/s to 25 m/s, in 2 seconds. So 25m/s - 5 m/s, then divide by time =
10m/s squared
The radius of magnesium atom is 0.16NM the radius of a nucleus is about 1/10,000 that of an atom calculate the radius of magnesium nucleus give your answer in standard form. And explain
The radius of magnesium atom is 0.16NM and radius of nucleus is 1\10,000 of atom so radius of magnesium nucleus will be 1.6E-5 NM.
Given,
radius of magnesium atom is 0.16NM
radius of nucleus is about 1\10,000 of an atom
So radius of magnesium nucleus will be :
radius of magnesium atom * 1\10,000
0.16 NM *1\10,000
1.6e-5 NM
Hence radius of magnesium nucleus will be 1.6E-5 NM by simple unitary method.
We can also put it in SI units by using the same unitary method and get the values in meters which will be equal in values to 1.6 e-14 m.
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What is the slope of the line plotted below?
A ship at sea is due into a port 307 km due south in two days. However, a severe storm comes in and blows it 178 km due east from its original position. How far is the ship from its destination
The ship is 354.87 km far away from its destination.
What is Pythagoras' theorem?Pythagoras' Theorem states that the square of the hypotenuse side in a right-angled triangle is equal to the sum of the squares of the other two sides.
This triangle's three sides are known as the Perpendicular, Base, and Hypotenuse. Due to its position opposite the 90° angle, the hypotenuse, in this case, is the longest side. When the positive integer sides of a right triangle (let's say sides a, b, and c) are squared, the result is an equation known as a Pythagorean triple.
H²=P²+B² where,
H= Hypotenuse of the triangle
P= Perpendicular of the triangle and,
B= Base of the triangle
According to the question,
The ship is 307 km due south and 178 km east due to the storm.
So, H²=P²+B²
⇒H²=(307)²+(178)²
⇒H=√125933
H=354.87 km.
Hence, the ship is 354.87 km far away from its original position.
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A SQUARE induction coil with a side length 3 cm and 400 windings, is placed perpendicularly in a uniform magnetic field and then rotated through an angle of 45⁰ in 0,08 s. C E S An emf of 7 V is induced in the coil. 3.1 Calculate the change in the magnetic flux. 3.2 Calculate the magnitude of the magnetic field.
The result will be E1=E2>E4>E3
When the plane of the armature of an a.c. dynamo is parallel to the lines of force of the magnetic field, the amplitude of the induced e.m.f. is at its greatest. Additionally, the rate of change of the magnetic flux associated with the armature is at its greatest. As a result, in this orientation, the e.m.f. induced in the armature is greatest.
The EMF's amplitude is equal to Nr2B. N is the number of turns, and r is the square's half-side.
In example 3, the axis is perpendicular to the magnetic field, hence the flux is zero and the amplitude is zero as a result.
Case 4 has an axis that falls between types 1, 2, and 3.
Here, we must consider the angular velocity's x and y components.
Component in the x direction will be zero.
Additionally, the new angular velocity will be 2w because it is exactly halfway between x and y.
So now put these numbers in actual formula. The result will be E1=E2>E4>E3
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at what temperature both celsius and fahrenheit scale show the same reading? show by calculation.
Answer:
The two scales have different zero points and the Celsius degree is bigger than the Fahrenheit. However, there is one point on the Fahrenheit and Celsius scales where the temperatures in degrees are equal. This is -40 °C and -40 °F.
Explanation:
Q|C The speed of a one-dimensional compressional wave traveling along a thin copper rod is 3.56 km/s . The rod is given a sharp hammer blow at one end. A listener at the far end of the rod hears the sound twice, transmitted through the metal and through air, with a time interval Δt between the two pulses.(b) Find the length of the rod as a function of Δt.
The length of the rod as a function is 379.57 Δt
(b) The speed of a wave in metal=3560 m/s
Let L be the length of the rod.
[tex]-\frac{l}{3560}+\frac{l}{343}=\Delta t \\&l=\Delta t\left(\frac{1}{-\frac{1}{3560}+\frac{1}{343}}\right)[/tex]
[tex]\\&l=379.571 \Delta t \\&\text[/tex]
As a result, the rod's length as a function is 379.57 Δt.
Where does the wave travel?A wave in which the medium's particles travel gradually in the direction of the wave's propagation with a gradation of speeds such that the faster particles overcome the slower and are then overtaken themselves, similar to a standing wave.A wave is the result of an object moving through a medium, such as water or air. When an object moves, it creates waves in the surrounding area that are similar to the shape and size of the original object. This phenomenon can be observed quite easily when you put two smooth rocks next to each other and watch how their respective waves crash against each other.To learn more about wave, visit:
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A boat moves with a velocity of 15 m/s N in a river which flows with a velocity of 8 m/s W. Calculate the boats resultant velocity with respect to due North.
The resultant velocity of the boat with respect to the North is 17 m/s North-West.
What is resultant velocity?Resultant velocity is the single velocity obtained when two or more velocities are are combined.
To calculate the resultant velocity of the boat, we use the formula below.
Formula:
R² = P²+Q²............... Equation 1From the question,
Given:
P = 15 m/s NQ = 8 m/s WWhere R is the resultant velocity of the boat.Substitute these values into equation 1
R² = 15²+8²R² = 289R = √(289)R = 17 m/s North-West.Hence, the resultant velocity of the boat with respect to the North is 17 m/s North-West.
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3. How does the shape of a sail affect the distance a boat will travel?
Independent Variable:
Dependent Variable:
Answer:
IV: Sail shape
DV: Travel distance
Explanation:
The independent variable is the variable we are changing to see its effects. If we are seeing how the shape of a sail affects travelling distance, the independent variable will be the shape of the sail. This could be achieved by using different dimensions or different geometric shapes.
The dependent variable is the one we are measuring in response to the independent variable. In this case it will be the distance that the boat travels. This could be measured using a ruler or distance meter.
Hope this helped!