In a group of molecules all traveling in the positive z direction, what is the probability that a molecule will be found with an z-component speed between 400 and 401 m/s if m/(2kT) = 5.62x10-6 s2 /m2 ? [Hint: you need to find and normalize a one dimensional distribution function first!]
Answers
The probability that a molecule will be found with an z-component speed between 400 and 401 m/s if m/(2kT) = 5.62x10⁻⁶ s² /m² is 0.00145.
To find the probability of a molecule having a z-component speed between 400 and 401 m/s, we need to first calculate the distribution of speeds for the group of molecules in the positive z direction.
The one-dimensional Maxwell-Boltzmann distribution function for the z-component of the speed is given by:
f(vz) = (m/(2πkT))¹/² * exp(-mvz²/(2kT))
where m is the mass of the molecule, k is the Boltzmann constant, T is the temperature, and vz is the z-component of the speed.
To find the probability that a molecule will be found with an z-component speed between 400 and 401 m/s, we need to integrate this distribution function between these two speeds and normalize the result:
P = ∫(f(vz) dvz) / ∫(f(vz) dvz)
where the integrals are taken from 400 to 401 m/s.
Substituting the given values, we get:
f(vz) = (1/(2π(5.62x10⁻⁶)))¹/²) * exp(-(5.62x10⁻⁶vz²/(2))
P = ∫(f(vz) dvz) / ∫(f(vz) dvz)
= ∫(from 400 to 401) [(1/(2π(5.62x10⁻⁶)))¹/² * exp(-(5.62x10⁻⁶)vz²/(2))] dvz / ∫[(1/(2π(5.62x10⁻⁶)))¹/² * exp(-(5.62x10⁻⁶)vz²/(2))] dvz
This integral can be solved using numerical methods or using a table of integrals to get:
P ≈ 0.00145
Therefore, the probability that a molecule will be found with an z-component speed between 400 and 401 m/s is approximately 0.00145.
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Related Questions
Two slits spaced 0.280mm apart are placed 0.780m from a screen and illuminated by coherent light with a wavelength of 650nm . The intensity at the center of the central maximum (?=0?) is I0.
A) What is the distance on the screen from the center of the central maximum to the first minimum?
y=
B) What is the distance on the screen from the center of the central maximum to the point where the intensity has fallen to I0/2?
y=
Answers
The distance on the screen from the center of the central maximum to the first minimum is 1.839mm. The distance on the screen from the center of the central maximum to the point where the intensity has fallen is 0.
To solve this problem, we can use the principles of double-slit interference.
(a) The distance on the screen from the center of the central maximum to the first minimum can be calculated using the formula for the position of the mth minimum:
y = (mλL) / d,
where y is the distance on the screen, λ is the wavelength of light, L is the distance between the slits and the screen, d is the separation between the slits, and m is the order of the minimum.
For the first minimum, m = 1. Plugging in the given values, we have:
y = (1 * 650nm * 0.780m) / 0.280mm = 1.839mm.
(b) The distance on the screen from the center of the central maximum to the point where the intensity has fallen to I0/2 can be calculated using the formula:
y = √(mλL * (I0/2)) / d,
where m is the order of the point where the intensity has fallen to I0/2.
For I0/2, we can use m = 0 since it represents the central maximum. Plugging in the values, we have:
y = √(0 * 650nm * 0.780m * (I0/2)) / 0.280mm = 0.
Note: It's important to convert all units to the same system (e.g., meters or millimeters) before performing calculations to ensure accurate results.
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1. The first thing to do in the event of brake failure is to a. use the parking brake to stop your carb. pump the brake pedal rapidlyc. shift to a lower geard. steer against the curb 2. Engine failure can be caused by a. a broken timing gearb. a lack of fuelc. extreme heatd. all of the above 3. If your engine stalls a. your power brakes won't work at allb. your power steering won't work at allc. your power brakes and power steering won't work very welld. you should pump your power brakes 4. If your engine is flooded, you will probably a. smell gasolineb. see steam coming out from under the hoodc. have your engine stall after going through a large puddle of waterd. all of the above 5. The most common kind of steering failure is a. total system failureb. power-assist failurec. both a
Answers
Answer:
The correct answers are -
1. b. pump the brake pedal rapidly
2. d. all of the above
3. c. your power brakes and power steering won't work very well
4. a. gasoline
5. b. power-assist failure
Explanation:
Brakes help in stopping the vehicle by causing resistance to wheels. IF brake failure it is advised to pump the breaks rapidly in order to cause resistance. Engine failure can be caused by various reasons such as a broken timing gear, no fuel, or getting extremely heated.
In the case of stalling of engine most common effects as power steering not working properly or power brakes not working well. The flooded engine means the engine has too much gasoline that it wont starts.
Why dose a solid change to a liquid when heat is added
Answers
Answer: molecules heat up under different ranges of heat causing bonds to break down but depends on the solid. There are different melting points.
Explanation:
Two 0.5 kg carts,one red and one green ,sits about half a meter apart on a low friction track. You push on the red with a constant force of 4N for 0.17m and then remove your hand. The cart moves 0.33 m on the track and then strikes the green cart. What is the work done by you on the two cart system?
Answers
Answer:
Work done on the two cart system is 2 N-m
Explanation:
Work done is equal to the product of force and displacement
Work done =4N * (0.17 +0.33)
work done = 4N * 0.5
Work done = 2 N -m
Work done on the two cart system is 2 N-m
Observing from the Earth, astronomer Jill can determine parallax to 0.2 arcseconds, which corresponds to seeing the parallax of a star at a distance of 16 light years. If she observes with everything else the same, but from an asteroid that orbits the Sun at a distance of 3 AU (3x the Earth-Sun distance), how far away is the most distant star for which she can measure parallax?
Answers
The most distant star for which Jill can measure parallax from the asteroid orbiting the Sun at a distance of 3 AU is approximately 224,620 AU.
To determine the maximum distance at which Jill can measure parallax from the asteroid orbiting the Sun, we need to calculate the corresponding parallax angle for that distance.
The parallax angle (θ) is related to the distance to the star (d) and the baseline distance (B) between two observations by the following formula:
θ = atan(B / d)
Given that Jill can determine parallax to 0.2 arcseconds, which corresponds to a distance of 16 light years, we can write:
0.2 arcseconds = atan(B / 16 ly)
To convert the distance from light years to astronomical units (AU), we can use the conversion factor that 1 light year is approximately equal to 63,241 AU. Therefore:
0.2 arcseconds = atan(B / (16 * 63,241 AU))
Now, let's consider the new observation from the asteroid, which orbits the Sun at a distance of 3 AU. The baseline distance (B) for Jill's observations will be twice the distance of the asteroid from the Sun (6 AU) because she will observe the star from opposite sides of the Sun's orbit. Substituting B = 6 AU into the equation:
0.2 arcseconds = atan(6 AU / (16 * 63,241 AU))
Simplifying the equation:
0.2 arcseconds = atan(6 / (16 * 63,241))
Now, we can solve for the distance (d) using the inverse tangent (atan) function:
d = (6 / (16 * 63,241)) / atan(0.2 arcseconds)
Calculating this expression:
d ≈ 2.2462 × 10^5 AU
Therefore, the most distant star for which Jill can measure parallax from the asteroid orbiting the Sun at a distance of 3 AU is approximately 224,620 AU.
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a ball is thrown from 1.0 m above the ground. the initial velocity is 20 m/s at an angle of 40 degrees above the horizontal. what is the maximum height of the ball above the ground?
Answers
1.0 m above the earth, a ball is hurled. 20 m/s at an angle of 40 degrees above the horizontal is the beginning velocity. The ball may rise 9.4 metres above the earth.
The vertical velocity component of the ball's starting velocity can be used to determine the maximum height of a ball thrown at an angle.
v iy = v 0 * sin(),
here v = 0 , initial velocity
it may be used to get the vertical component of the initial velocity.
maximum height , H = v iy2 / (2 * g),
where g = 9.8m/s2
H = (20 sin 40°)²/ 2 X 9.8
H = 165.27/ 19.6
H = 8.4 m
therefore, the maximum height is = 1+ 8.4m = 9.4
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A7
A car of mass 15ookg, tr
mass 15ookg, travelling at a
Steedy spead, has
kinetic energy of 2004
о a
What is
the speed of the car?
What is it
Answers
Answer:
v = 1.63 m/s
Explanation:
Given that,
The mass of a car, m = 1500 kg
The kinetic energy of a car, K = 2004 m/s
We need to find the speed of a car. The formula for the speed of a car is given by :
\(K=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2K}{m}} \\\\v=\sqrt{\dfrac{2\times 2004}{1500}} \\\\v=1.63\ m/s\)
So, the speed of the car is equal to 1.63 m/s.
Answer:taking my points !
Explanation:
brainliest please help
tell me if am right
if not correct me
please
Answers
Answer:
See the answers below
Explanation:
To solve this problem we must use the following equation of kinematics.
\(v_{f}=v_{o}+a*t\)
where:
Vf = final velocity [m/s]
Vo = initial velocity [m/s]
a = acceleration [m/s²]
t = time [s]
First case
Vf = 6 [m/s]
Vo = 2 [m/s]
t = 2 [s]
\(6=2+a*2\\4=2*a\\a=2[m/s^{2} ]\)
Second case
Vf = 25 [m/s]
Vo = 5 [m/s]
a = 2 [m/s²]
\(25=5+2*t\\t = 10 [s]\)
Third case
Vo =4 [m/s]
a = 10 [m/s²]
t = 2 [s]
\(v_{f}=4+10*2\\v_{f}=24 [m/s]\)
Fourth Case
Vf = final velocity [m/s]
Vo = initial velocity [m/s]
a = acceleration [m/s²]
t = time [s]
\(v_{f}=5+8*10\\v_{f}=85 [m/s]\)
Fifth case
Vf = final velocity [m/s]
Vo = initial velocity [m/s]
a = acceleration [m/s²]
t = time [s]
\(8=v_{o}+4*2\\v_{0}=8-8\\v_{o}=0\)
The force that always opposes the motion of an object is called _________.
inertia
acceleration
friction
Answers
The force that always opposes the motion of an object is called friction. Friction is the force that resists the motion of two surfaces that are in contact with each other.
What is force?Force is an external influence that can cause an object to accelerate, decelerate, change direction, maintain its current state, or experience a combination of these effects. Forces can be either contact forces, such as friction, normal force, and applied force, or non-contact forces, such as gravity, magnetic force, and electrical force. The magnitude of a force is measured in terms of its strength, while the direction of a force is measured in terms of its direction. Force is an integral part of physics and is used to explain and predict a wide range of physical events. Force is a fundamental concept for understanding how the physical universe works.
It is caused by the interaction of the two surfaces as they interact with each other. Friction can be static, which is the force that resists the motion of two surfaces that are in contact with each other but not moving, or kinetic, which is the force that resists the motion of two surfaces that are in contact with each other and moving.
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Fill The Blank? the tangential speed on the outer edge of a rotating carousel is _______.
Answers
The tangential speed on the outer edge of a rotating carousel is dependent on the carousel's rotational speed and the distance from the center of rotation to the outer edge.
It can be calculated using the formula: tangential speed = radius × angular speed
Where the radius is the distance from the center of rotation to the outer edge, and the angular speed is the rate of rotation measured in radians per second.
The carousel's rotational speed of a carousel refers to the rate at which it completes one full revolution, and it is usually measured in units of revolutions per minute (RPM) or radians per second (rad/s). The faster the carousel rotates, the higher the outer edge's tangential speed. The rotational speed of a carousel can be controlled by adjusting the power source that drives it, such as an electric motor.
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please help me!!!
A pigeon is walking around the courtyard looking for food the pigeon walks 4.0 m West 2.5 M North 1.1 M and 7.3 m south what is the pigeons final displacement vector
Answers
Answer: ARE YOU DOING PRIMAVERA?!? PLEASE I KNOW YOU ARE I CANT DO PHYSICS-
Explanation:
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The pigeon final position displacement vector represented as , \(-2.9i-4.8j\)
Given that Pigeon walks 4.0 m West then 2.5 m North then 1.1 m east and then 7.3 m south.
A diagram is attached below which describe the above situation.
In attached diagram, Distance DO represent the displacement.
From Diagram, it is observed that final position D of Pigeon is 4.8 m away from x axis and 2.9 m away from y axis.
Thus, Displacement vector represented as , \(-2.9i-4.8j\)
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Which of the following devices can be red to produce both transverse and
longitudinal waves?
1o) a string
(b) a ripple tank
(c) a helical spring (Slinky (d) a tuning fork
Answers
Answer:
Slinky is the correct answer.
Newton’s first law of motion was a giant leap forward in scientific thought during Newton’s time. Even today, the idea is sometimes difficult at first for people to understand. Which statement is the best example of an object and motion that would make it hard for people to believe Newton’s first law? A rolling ball eventually slows down and comes to a stop. A wagon must be pushed before it begins to move. The heavier the load in a cart, the harder the cart is to turn. A box does not move when pushed equally from opposite sides.
Answers
Answer: A rolling ball eventually slows down and comes to a stop.
Explanation: Right on Edge2020, not C or B or D.
Answer:
A
Explanation:
Person above me might be right
Two forces of
411
N and
617
N act on an object. The angle between the forces is
46°.
Find the magnitude of the resultant and the angle that it makes
with the larger force.
Answers
Let's first resolve the two forces into their components as shown in the diagram below: The larger force (617 N) makes an angle of 46° with the horizontal axis.
Therefore, the horizontal component will be given by:
H = 617 cos 46°H = 617 × 0.69H = 425.73 N
The vertical component will be given by:V = 617 sin 46°V = 617 × 0.73V = 450.66 NOn the other hand, the smaller force (411 N) makes an angle of (90° - 46°) = 44° with the horizontal axis. Therefore, the horizontal component will be given by:H = 411 cos 44°H = 411 × 0.72H
= 296.52 N
The vertical component will be given by:V = 411 sin 44°V = 411 × 0.67V = 274.47 N The resultant horizontal component, R will be given by:R = 425.73 + 296.52R = 722.25 N The resultant vertical component, R will be given by:R = 450.66 + 274.47R = 725.13 N The magnitude of the resultant, R will be given by:R² = (722.25)² + (725.13)²R = √(522198.06)R = 722.82 N The angle that R makes with the larger force (617 N) will be given by:θ = tan⁻¹(725.13/722.25)θ = 45.23° Therefore, the magnitude of the resultant is 722.82 N and it makes an angle of 45.23° with the larger force.
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What is the definition of input force?
Answers
Answer:
The input force (effort) is the amount of effort used to push down on a rod, or pull on a rope in order to move the weight. In this example, the force the little guy is using to pull the elephant is the input force.
Explanation:
A person is sitting in a car watching a traffic light. the light is 14.5 m away.
when the light changes color, how long does it take the new color of light to
travel to the driver so that he can see it? state your answer in nanoseconds.
v=3.00*10^8 m/s
Answers
The light needs 48.3 x 10-9 seconds, or 48.3 nanoseconds, to get to the driver.
The distance traveled in a unit of time is called speed. It refers to a thing's rate of movement. The scalar quantity known as speed is the velocity vector's magnitude.The following formula determines the speed of a light wave:
Speed = Distance/Time
Both the distance to be traveled and the light wave's velocity are specified.
The distance traveled by the wave in the given amount of time may be determined by multiplying the
Putting distance = 14.5 m and speed = 3 x 10^8 m/s
3 x 10^8 m/s = 14.5 m/Time
Time is defined as 48.3 x 10-9 seconds, or 48.3 nanoseconds.
As a result, the light needs 48.3 x 10-9 seconds, or 48.3 nanoseconds, to reach the driver.
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Sushant went on an educational trip to a village. There he found a potter making pots. He found that the soil used for making pots was different from normal soil. Name the soil and also tell its characteristics.
Answers
The soil used for making pots by potters is commonly known as "Potter's Clay" or "Potter's Soil."
Characteristics of Potter's Clay:
1. Plasticity: Potter's clay has high plasticity, which means it can be easily molded and shaped into different forms without cracking or breaking.
2. Cohesiveness: It exhibits good cohesion, allowing the clay particles to stick together when moistened, forming a workable material.
3. Fine Particle Size: Potter's clay consists of fine particles that contribute to its plasticity and workability.
4. High Water Retention: It has the ability to retain water, which helps maintain the moisture content necessary for the clay to be shaped and formed.
5. Low Shrinkage: Potter's clay exhibits low shrinkage when it dries or undergoes firing, ensuring minimal distortion or cracking during the drying and firing processes.
6. Good Bonding Properties: The clay particles have the ability to bond together, creating a strong and durable structure once fired.
7. Good Porosity: After firing, the clay retains some porosity, allowing the pot to breathe and allowing for the exchange of air and moisture.
A worker drives to work each morning, always leaving at the same time. When he drives at
an average speed of 30km/hr he arrives six minutes early, but when he drives at an average
speed of 20km/hr he arrives six minutes late. What is the distance between his house and his
office? Calculate his average speed when he arrives precisely on time. Explain your answer.
Answers
Explanation:
speed = distance/time
distance/speed = distance / distance/time = time
when we define the equations, we must be careful to use the same scales as in the given numbers.
as we are dealing with km/h for speed, we need to have distance measured in km, and time in hours.
6 minutes is therefore 1/10 of an hour (1 hour = 60 minutes).
distance/30 = x - 1/10
distance/20 = x + 1/10
we subtract equation 2 from equation 1 :
distance/30 = x - 1/10
- distance/20 = x + 1/10
-----------------------------------
distance/30 - distance/20 = -2/10
we multiply by 60 to eliminate all fractions :
2×distance - 3×distance = -2×6 = -12
-distance = -12
distance = 12 km
x = the travel time to arrive on time.
distance/30 = x - 1/10
12/30 = x - 1/10
12 = 30x - 3
15 = 30x
x = 15/30 = 0.5 hours = 30 minutes
so, he has half an hour for his 12 km trip to work to arrive precisely on time.
that means his average speed for that must be
12/0.5 = 24/1 = 24 km/h
what is the relationship between wavelength and frequency ?
Answers
Answer: inverse relationship
Explanation: one increases and the other decreases
Using the diagram below, identify the correct chemical formula for the molecule shown.
Answers
Answer:
is the firts one because i due it in jannuary i will know all answer
Explanation:
1
Describe the kinetic energy of the pins at
the beginning of the video. Explain your
answer.
Answers
Answer:
I think a Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.”
Hope this help!:)
An alpha particle (charge 2e) and an electron move in opposite directions from the same point, each with the speed of 2.50 * 105 m>s (Fig. E28.4). Find the magnitude and direction of the total magnetic field these charges produce at point P, which is 8.65 nm from each charge.
Answers
Magnitude and direction of the total magnetic field these charges produce at point P, which is 8.65 nm from each charge is 1.387 X 10⁻¹² T.
Magnetic field of moving charged particles.
B= (μ₀/4π) (q[v₁r]/r³)
Suppose that an alpha particle flies to the right, and an electron to the left, then the field of the alpha particles and the electron will be directed in the “to us” direction and the total magnetic mole will be the sum.
B(total) = (μ₀/4π) (qα[vα.r]/r³) + (μ₀/4π) (qe[ve.r]/r³)
= (μ₀/4π) (v/r²)(|qα| + |qe|)
= ((4π X 10⁻⁷)/4π) (2.5 X 10⁵/8.65 X 10⁻⁹) (3 X 1.6 X 10⁻¹⁹)
= 1.387 X 10⁻¹² T
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Explain Beryllium chloride molecule ( Formation of BF3 molecule and NH3 molecule )
Answers
Answer:
Here it is!
Explanation:
BeCl2 referred to as Beryllium Chloride, is an inorganic compound. It appears as white or yellow crystal solid at room temperature. It can exist in both monomeric and 1-D polymeric forms. The properties of beryllium chloride are similar to aluminum chloride owing to the diagonal relationship of beryllium with aluminum.
The molar mass and melting point of beryllium chloride are 79.91 g/mol and 399 °C, respectively. The chemical bonding in Beryllium Chloride is studied by writing down its Lewis structure by following the Lewis approach.
After lewis structure, there is a need of understanding its molecular geometry and hybridization of the central atom, Beryllium. The molecular orbital (MO) theory will be used to understand the MO diagram of beryllium chloride.
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Answer:
Beryllium Chloride
\({ \boxed{ \mathfrak{formula : \: { \rm{BeCl _{2} }}}}}\)
Beryllium chloride is formed through ionic / electro-valent bonding. The beryllium atom loses its two valency electrons to the two chlorine atoms each with seven outermost electrons.
As a result, an ionic compound Beryllium chloride is formed.
Boron Fluoride (BF3)
Boron trifluoride is formed through interaction of π bonds with the double alpha bonds of fluorine.
From VESPR, the structure is tetrahedral and non-symmetrical hence polarity is high.
Since, fluorine is highly electronegative, it makes the bond polar
All in all, Boron Fluoride is formed through hybridization.
Ammonia (NH3)
Ammonia is formed through hydrogen bonding.
Hydrogen bonding is a covalent bonding situation where hydrogen bonds with a highly electronegative element such as oxygen, fluorine, nitrogen.
Paco was driving his scooter west with an initial velocity of 4 m/s. He accelerates at 0.5 m/s2 for 30 seconds.
What is his final velocity?
2 m/s
8 m/s
19 m/s
60 m/s
Answers
Answer:
V = 19m/s
Explanation:
Given the following data;
Initial velocity, U = 4m/s
Acceleration, a = 0.5m/s²
Time, t = 30 seconds
To find the final velocity, we would use the first equation of motion;
V = U + at
Where;
V is the final velocity.
U is the initial velocity.
a is the acceleration.
t is the time measured in seconds.
V = 4 + 0.5*30
V = 4 + 15
V = 19m/s
Therefore, his final velocity is 19 meters per seconds.
Answer:
its C)19
Explanation:
BRAINLIEST : A car starts from rest and accelerates at a rate of 40 m/s2 over a time if 2.4 s. How fast is the car going at the end of this time interval?
Please explain
Answers
Answer:
\(\boxed {\boxed {\sf 96 \ m/s}}\)
Explanation:
We are asked to find the final velocity of the car given the acceleration and time. We can use the following kinematics equation to calculate the final velocity.
\(v_f=v_i+(a \times t)\)
The car starts from rest, so the initial velocity is 0 meters per second. It accelerates a rate of 40 meters per square second over a period of time of 2.4 seconds.
\(v_i\)= 0 m/s a= 40 m/s²t= 2.4 sSubstitute the values into the formula.
\(v_f= 0 \ m/s + ( 40 \ m/s^2 \times2.4 \ s)\)
Solve inside the parentheses.
40 m/s/s * 2.4 s = 40 m/s * 2.4=96 m/s\(v_f= 0 \ m/s + (96 \ m/s)\)
Add.
\(v_f= 96 \ m/s\)
The final velocity of the car is 96 meters per second.
The magnitude of the magnetic field generated by an electromagnet is:.
Answers
We have that the magnitude of the magnetic field is determined by the amount of current produced.
The magnitude of the magnetic field generated by an electromagnetGenerally, the magnetic field strength is called the tesla This is measured as one Newton per ampere-meter.
Electromagnet is a magnet where the magnetic field is created by an electric current,
Therefore the magnitude of the magnetic field is determined by the amount of current produced
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if the magnitude of the charges is tripled for both of two balls and distance remains the same, the electrical force between them will be changed by a factor of what?
Answers
The electrical force between two balls will change by a factor of 9 if the magnitude of the charges is tripled for both while the distance between them remains constant.
According to Coulomb's law, the strength of the electrostatic force of attraction or repulsion between two point charges is inversely proportional to the square of the distance between them and directly proportional to the product of the magnitudes of the charges.
It means,
F₁ = k(q₁ × q₂)/r²
Where,
F = Electrostatic force
k = Coulomb constant
q₁ , q₂ = Magnitude of charges
r = Distance of separation
Now, according to the question, the distance remains same and the magnitude of the charges is tripled for both of two balls it means q₁ becomes 3q₁ and q₂ becomes 3q₂.
So, the new equation will be,
F₂ = k(3q₁ × 3q₂)/r² = 9k(q₁ × q₂)/r² = 9F₁
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how much does a change in mass affect the kinetic energy of two balls of comparable diameter?
Answers
Answer:
Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.
In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.
how do i solve this question?? A 100 g ball moving at a constant velocity of 200 cm/s strikes a 400 g ball that is at rest. After thecollision, the first ball rebounds straight back at 120 cm/s. Calculate:a) the final velocity of the second ball.b) If they were in contact for 0.1s, determine the magnitude of the force that acted on the second ball.
Answers
A.
\(\begin{gathered} Momentum \\ m1v1+m2v2=m1v3+m2v4 \\ (100\cdot200)+0=(100\cdot-120)+(400\cdot v4) \\ 20000=-12000+400v4 \\ 32000=400v4 \\ v4=80cm/s \end{gathered}\)This is momentum conservation, is important to maintain the direction to know the positive and negative values
B.
\(\begin{gathered} F=\frac{m(\Delta v)}{\Delta t} \\ F=\frac{0.4kg(0.8m/s)}{0.1s} \\ F=3.2N \end{gathered}\)For this part, is important to use the correct units. On A it was not relevant because you can use any units, you only have to maintain them the same.
What is the sign of the charge in this figure? a)positive b)You cannot tell from the information given. c) negative d) neutral
Answers
Answer:
Explanation:
C
In charging by induction, a charged object is brought near an object without touching it. The presence of the charge object induces electron movement and a polarization of the object. Then conducting pathway to ground is established and electron movement occurs between the object and the ground. During the process, the charged object is never touched to the object being charged.