Answer:
D
Explanation:
Well, light travelling in a year is a light year.
Answer:
D: Lightyear
Explanation:
One lightyear (ly) is the distance traveled by light in year time.
It is equal to \(9.46 * 10^{15} \ m\).
Assume a 4-pole induction machine with 240 V (line-line RMS) applied to the stator at 60 Hz. What is the mechanical synchronous speed
The mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm.
The mechanical synchronous speed of an induction machine is the speed at which the rotating magnetic field produced by the stator winding moves. It can be calculated using the formula:
Ns = 120 * f / P
where Ns is the mechanical synchronous speed in revolutions per minute (rpm), f is the frequency of the applied voltage in hertz (Hz), and P is the number of poles in the machine. In this case, the frequency is given as 60 Hz, and the number of poles is 4. Substituting these values into the formula, we get:
Ns = 120 * 60 / 4
= 1800 rpm
Therefore, the mechanical synchronous speed of the 4-pole induction machine with 240 V applied to the stator at 60 Hz is 1800 rpm. This means that the rotor of the machine would ideally rotate at a speed of 1800 revolutions per minute when the machine is operating under normal synchronous conditions.
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A 1000-kg sports car of mass accelerates from rest to 20 m/s in 6.6 s. What is the frictional force exerted by the road on the car?
Acceleration
a=v-u/ta=20-0)6.6a=20/6.6a=3.03m/s²Now
Apply Newtons second law
F=maF=1000(3.03)F=3030NTo find frictional force we need coefficient of friction which is not given .
generally for car case the value of coefficient is 0.6-0.8 .
Putting max 0.8
f=$\mu$ Nf=0.8(3030)f=2424NNote:
Last part is assumption not accurate
The force acting on the sports car is the product of its mass and acceleration. The force on the car is 3300 N.
What is force?Force is an external agent acting on a body to deform it or to change it from the state of rest or motion. There are different kinds of forces such as frictional force, gravitational force, nuclear force, magnetic force etc.
Frictional force is acting as a hindrance to the motion of an object. The frictional force is the product of normal force and coefficient of friction.
According to second law of motion, force is the product of mass and acceleration.
Given mass m = 1000 Kg
change in velocity = 20 - 0 m/s
Acceleration = 20 m/s / 6.6 s
= 3.3 m/s².
Force = m a
= 3.3 m/s² × 1000 Kg
= 3300 N.
Now, product of this normal force and coefficient of static friction.
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2Cu + 02 —> 2Cuo
In the equation above, what is the
coefficient of the oxygen molecule?
A) O
B) 1
C) 2.
D) 4
Answer:
C
Explanation:
Solve for P when Q=8, R=4 and S=6
The value of P is the given variation is determined as 64.
What is the value of P?The value of P is the given variation is calculated from the relationship between the variables as shown below;
From the given statement, we will have the following equations;
P ∝ QR²/S
P = kQR²/S
where;
k is the constant of proportionalityGiven;
P = 40, Q = 5, R = 4 and S = 6
k = SP/QR²
k = (6 x 40 ) / (5 x 4²)
k = 3
when Q=8, R=4 and S=6, the value of P is calculated as;
P = ( 3 x 8 x 4² ) / 6
P = 64
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The complete question is below:
P varies directly as Q and the square of R and inversely as S.
If P = 40, Q = 5, R = 4 and S = 6, Solve for P when Q=8, R=4 and S=6
An electromagnetic wave Group of answer choices a.Never moves b.Can travel through empty space or matter. c. Can travel only through empty space. d. Cannot travel through matter
Answer:
b
Explanation:
because electromagnetic waves can travel in vacuum as they don't require particles to transfer energy from one point to another. they can also travel through mediums such as the wall or air, if not how do radio waves transfer energy in this hyper advanced world? through the air
hope this helps
please mark it brainliest
he first right-hand rule relates which two quantities?
A.
current (thumb) to magnetic field (fingers)
B.
magnetic field (thumb) to current (fingers)
C.
current (thumb) to force (fingers)
D.
force (thumb) to current (fingers)
Reset Next
Answer: A.
current (thumb) to magnetic field (fingers)
Answer:
A. current (thumb) to magnetic field (fingers)
Explanation:
According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.
Hope it helps.
If you have any query, feel free to ask.
According to the kinetic-molecular theory, particles of a gas.
According to the kinetic-molecular theory, particles of a gas are in constant, random motion, colliding with one another and the walls of their container.
This movement results in pressure and explains gas behavior under different conditions. Gas particles are small and widely spaced, occupying a negligible volume compared to the container. They have negligible attractive or repulsive forces, allowing them to move independently.
Additionally, the kinetic energy of gas particles is proportional to temperature, with higher temperatures increasing their speed and energy. Gas particles' collisions are elastic, meaning there's no net loss of kinetic energy. In summary, the kinetic-molecular theory describes gas particles as constantly moving, widely spaced, and having negligible forces between them, with their kinetic energy proportional to temperature and collisions that maintain total energy.
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What are some some examples of estimator variables (forensics)
Answer:
Estimator variables are those that cannot be controlled by the criminal justice system. They include simple factors like the lighting when the crime took place or the distance from which the witness saw the perpetrator.
Explanation:
Need help this is a grade
Answer: C
Explanation: When you have a tomato for example, it absorbs every color but red and therefore, appears red.
a screen is placed 40.0 cm from a single slit, which is illuminated with light of wavelength 690 nm. if the distance between the first and third minima in the diffraction pattern is 2.60 mm, what is the width of the slit?
The width of the slit is 0.212 mm.
The wavelength of light is defined as “The distance between the two successive crests or troughs of the light wave”.
We know that the distance between minima is given by :
\(t = (m_{f} - m_{i} ) \alpha x/d\)
where, t = distance between minima
\(\alpha =\) wavelength
x = distance of screen
d = width of slit
\((m_{f} - m_{i} ) =\) difference between minima
Given, x = 40 cm = 0.4 m
\(\alpha = 690 nm = 690 * 10^{-9} m\)
t = 2.60 mm = \(2.60 * 10^{-3} m\)
\((m_{f} - m_{i} ) =\) 3 -1 = 2
Putting these values in above equation we get d = 0.212 mm
So the width of the slit is 0.212 mm.
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three resistors with values of 5 ohms, 7 ohms, and 9 ohms are connected in parallel to a 12v battery. what is the equivalent resistance of the circuit? sketch the circuit.
This completes the parallel circuit with three resistors connected to a 12V battery. So, the equivalent resistance of the circuit is approximately 2.202 ohms.
To find the equivalent resistance of a parallel circuit with three resistors, you can use the formula:
1 / Req = (1 / R1) + (1 / R2) + (1 / R3)
Given the resistor values:
R1 = 5 ohms
R2 = 7 ohms
R3 = 9 ohms
Let's calculate the equivalent resistance:
1 / Req = (1 / 5) + (1 / 7) + (1 / 9)
1 / Req = 0.2 + 0.14286 + 0.11111
1 / Req ≈ 0.45397
Now, to find the equivalent resistance, take the reciprocal of this value:
Req = 1 / 0.45397
Req ≈ 2.202 ohms
So, the equivalent resistance of the circuit is approximately 2.202 ohms.
As for the sketch of the circuit, unfortunately, I am unable to draw here, but I can describe it for you:
1. Connect the positive terminal of the 12V battery to a junction point.
2. From this junction point, connect three separate wires to the first ends of each resistor (5, 7, and 9 ohms).
3. Connect the second ends of all three resistors to another junction point.
4. Finally, connect this second junction point to the negative terminal of the 12V battery.
This completes the parallel circuit with three resistors connected to a 12V battery.
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Which of the following statements regarding heat is accurate? NEED ASAP
The dimensions of a triangle are shown below.
What is the area of the triangle?
Answer:
7. answered because ia an pro
Explanation:
\(area = \frac{1}{2} bh\)
\(area = \frac{1}{2} \times 60 \times 50\)
\(area = \frac{3000}{2} \)
\(area = 1500mm ^{2} \)
I have a backbone and my body is covered with smooth, moist skin. I cannot regulate my own body temperature. I lay eggs in the water to reproduce. What can you infer from the description?The organism is an invertebrate.The organism is a vertebrate and an amphibian.The organism is a vertebrate and a mammal.The organism is a vertebrate and a reptile.
Mary Jo went on riding her horse through the trails. Her pace was 8 km/hr. She left at 8:30 am and got back to the barn at 9:00 am. How far did she go?
Question 4 options:
16 m/s
4 m/s
4 km
16 km
Answer:
4km
Explanation:
Distance=speed x time
Knowing this we know the time and speed
so it is 8 x .5= D
And 8 x .5 =4
If you have any questions let me know
a.) Using Earth's estimated cratering rate of Ncum (D > 22.6 km) = 1.8 x 10-15 craters/km2/yr, and a power law exponent b = 1.8 (see your class notes), compute the size of the largest crater likely to have formed in Sweden (area ≈ 450,000 km2) since the formation of its surface rocks ~2000 Myr ago. How does this compare to the size of the putative Uppland structure?
b.) Calculate the probability that a crater as large as Uppland would have formed in the past 2000 Myr. Note that the largest confirmed crater in Sweden is the 55 km-diameter Siljan structure
a) The size of the largest crater likely to have formed in Sweden since the formation of its surface rocks is approximately 63 km in diameter.
b) The probability that a crater as large as Uppland would have formed in the past 2000 Myr is very low, likely less than 0.01%.
a) Using the given equation N(D) = Ncum(Dref) * (D/Dref)^-b, where Dref = 22.6 km and Ncum = 1.8 x 10^-15 craters/km^2/yr, we can calculate that the expected number of craters with diameter > 63 km in Sweden since the formation of its surface rocks is approximately 0.0005.
Assuming that only one such crater would form, the maximum size of the largest crater is around 63 km in diameter.
b) The probability that a crater as large as Uppland would have formed in the past 2000 Myr can be estimated using the Poisson distribution. Based on the expected number of craters with diameter > 55 km in Sweden (0.002), the probability of at least one such crater forming in 2000 Myr is very low, likely less than 0.01%.
Therefore, the Uppland structure is likely not a meteorite impact crater.
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Given F1=800 N, F2=600N (a) Determine the support reaction forces at the smooth collar A. Ax= [ Select] . Ay= (Select) [Select] (b) Determine the support reaction moments at the smooth collar A. M(A) [Select] "Nim, M(A)y= (Select] Nim M(A)z= [Select] Nim. (c) Determine the normal reaction at the roller support B.B- [Select] N 0 m
a. The support reaction forces at the smooth collar A are Ax = 800 N and Ay = 600 N,
b. The support reaction moments at the smooth collar A are M(A)x = -1600Nm, M(A)y = 0Nm, and M(A)z = 400Nm
C. the normal reaction at the roller support B is B- = 600N.
The value of Ax = 800 N and Ay = 600 N , M(A)x = -1600Nm, M(A)y = 0Nm, and M(A)z = 400Nm B- = 600N.
The support reaction forces at the smooth collar A can be determined using equations of equilibrium:
F1 + F2 = Ax + Ay and F1x = Ax.
Therefore, Ax = 800 N and Ay = 600 N.
The support reaction moments at the smooth collar A can be determined using the moments equation of equilibrium: M(A)x + M(A)y + M(A)z = 0.
Substituting in the values for Ax and Ay, we can solve for the support reaction moments: M(A)x = -1600Nm, M(A)y = 0Nm, and M(A)z = 400Nm.
The normal reaction at the roller support B can be determined using equations of equilibrium:
F1 + F2 + B- = 0 and Ay = B-.
Therefore, B- = 600N.
In summary, the support reaction forces at the smooth collar A are Ax = 800 N and Ay = 600 N, the support reaction moments at the smooth collar A are M(A)x = -1600Nm, M(A)y = 0Nm, and M(A)z = 400Nm, and the normal reaction at the roller support B is B- = 600N.
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assume an ideal-offset model with for both diodes. if , , and , find the current through the diode, and the voltage across the diode, .
In an ideal-offset model for diodes, we assume that the diodes have an infinite resistance in the reverse direction and zero resistance in the forward direction. Using this model, we can calculate the current through and voltage across the diode. If we have and in the forward direction, we can assume that the voltage across the diode is zero. This means that the current through the diode will be determined solely by the resistor value. Therefore, the current through the diode will be .
In the reverse direction, the voltage across the diode will be equal to the voltage across the resistor, which is . Since the diode has an infinite resistance in the reverse direction, no current will flow through it, and the current through the resistor will be zero.To summarize, the current through the diode in the forward direction is , and the voltage across the diode is zero. In the reverse direction, the voltage across the diode is , and no current flows through it.
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a vector of magnitude 3 cannot be added to a vector of magnitude 4 so that the magnitude of the resultant is:
A vector of magnitude 3 cannot be added to a vector of magnitude 4 so that the magnitude of the resultant is 5
Let a vector equal 3 units.
unit vector b = 4
Reaction = R
Since they cannot be added, vectors. Therefore, we must adhere to the law of vector addition.
See the Figure:
By Pythagoras's theorem,
R² = a² + b²
=> R² = (3)² + (4)
²
=> R² = 9 + 16
=> R = √25
=> R = 5 unit
Resultant is 5
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For two nucleons 2 fm apart, the strong force is ________. A) strongest for two interacting neutrons. B) strongest for a proton interacting with a neutron. C) strongest for two interacting protons. D) equally strong for any combination of protons and neutrons.
Expert A
Answer: B
Explanation:
Main answer: B) strongest for a proton interacting with a neutron.
EXPLANATION: The strong force, which is one of the four fundamental forces in nature, is responsible for holding the nucleus of an atom together. It is the strongest force among the four fundamental forces, but it has a very short range, typically limited to within the size of a nucleus. For two nucleons (protons or neutrons) 2 fm (femtometers) apart, the strong force is strongest for a proton interacting with a neutron. This is because the strong force is mediated by the exchange of particles called mesons, which carry a "nuclear charge" and are attracted to opposite nuclear charges. Since protons have a positive nuclear charge and neutrons have no nuclear charge, a proton and neutron will attract each other strongly through the exchange of mesons. In contrast, two protons or two neutrons will repel each other due to their similar nuclear charges, resulting in a weaker strong force between them. Therefore, the correct answer is B) strongest for a proton interacting with a neutron.
Hi, I'd be happy to help with your question.
Main answer: For two nucleons 2 fm apart, the strong force is D) equally strong for any combination of protons and neutrons.
EXPLANATION: The strong force, also known as the strong nuclear force, is responsible for binding protons and neutrons together in the nucleus. This force is independent of the electric charge of the nucleons, so it acts equally strong between any combination of protons and neutrons. Therefore, it doesn't matter if the interaction is between two neutrons, two protons, or a proton and a neutron; the strong force remains equally strong in all cases.
HELP ASAP!!!! Ashley and Rachel are driving bumper cars. Ashley's bumper car is moving and she collides with Rachel bumper car, which is not moving. Describe what happens to the momentum of both cars During this collision.
Answer:
Rachels car moves and ashleys stops
Explanation:
When Ashley's moving car collides with Rachel's bumper car which is at rest then some of the momentum of Ashley's car is transferred to Rachel's car causing it to move.
What is the conservation of momentum?Conservation of momentum states that the momentum of a system is constant if there is the absence of external forces on the system. The momentum of an object can be conserved and is a vector quantity.
Momentum can be defined as the multiplication of the mass of a particle and its velocity. The law of conservation of momentum is confirmed by experiment and can be deduced mathematically on the presumption that space is uniform.
Conservation of linear momentum is derived from Newton’s second law of motion states that the total momentum remains the same in an isolated system.
The total momentum of Ashley's car and Rachel's car remains conserved. After the collision, the momentum transferred from Ashley's car and Rachel's car which makes it move.
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Select all of the factors that influence the gravitational potential energy of an object
movement
height
mass
compression
the maximum speed limit on interstate 10 is 75 miles per hour. how many meters per second is this
Answer:
33.53m/sExplanation:
Given the maximum speed limit on interstate 10 as 75 miles per hour, to get the speed in meter per seconds, we need to convert the given speed to meter per seconds.
Using the conversion 1 mile = 1609.34m and 1 hour = 3600 seconds
75 miles perhour = 75miles/1 hour
75miles/1 hour (in m/s) = 75miles*1609.34m* 1 hour/1mile * 1 hour * 3600s *
= 75 *1609.34m* 1 /1 * 1 * 3600s
= 120,700.5m/3600s
= 33.53m/s
Hence the maximum speed limit on interstate 10 in metre per seconds is 33.53m/s
20 POINTSSS PLS HELP
Imagine if the Earth suddenly sped up. What do you think would happen to its orbit?
Answer:
down below
Explanation:
I assume you're asking about it's orbit around the sun. I believe the Earth's orbit around the sun would be shorter. If the Earth sped up, one can assume that means the days are shorter and the rate at which the Earth orbits the sun would also speed up.
This sounds like an open ended question, so I don't think there can be a wrong answer.
Hope this helps! :)
Blank is the change in position of an object
Materials that hold electrons very tightly, and thus don't allow much static electricity to occur around them, are called
Please help with this problem
Mineralogically, barite is a sulfate, bornite is a sulfide, cuprite is an oxide, magnesite is a carbonate.
Which minerals fall under the main categories?Based on their chemical compositions, scientists divide minerals into groups. Nine major mineral classes were originally specified in the Dana Classification System: Native Elements, Sulfides, Sulfates, Halides, Oxides, Carbonates, Phosphates, Silicates, and Organic Minerals.There are four basic types of mineral formation: (1) igneous, or magmatic, when minerals form crystals from a melt, (2) Sedimentary, where minerals are produced by a process called sedimentation that uses fragments of other rocks that have suffered weathering or erosion as their raw material, and (3) Metamorphic.Mineralogically, barite is a sulfate, bornite is a sulfide, cuprite is an oxide, magnesite is a carbonate.To learn more about minerals refer to:
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Among the mineral groups, barite is a sulfide mineral, bornite is a sulfide mineral, cuprite is an oxide mineral, and magnesite is a carbonate mineral.
What are the different mineral groups?Scientists mainly classifies the minerals based on their chemical compositions. The Dana Classification System originally defined nine major mineral classes: Native Elements, Sulfides, Sulfates, Halides, Oxides, Carbonates, Phosphates, Silicates, and Organic Minerals.There have been mainly four basic types of mineral formation: (1) igneous, or magmatic, in which minerals form crystals from a melt, (2) sedimentary, in which minerals are produced by a process called sedimentation, which uses fragments of other rocks that have weathered or been eroded as their raw material, and (3) metamorphic.Barite is a sulfate, bornite is a sulfide, cuprite is an oxide, and magnesite is a carbonate mineral.To learn more about minerals refer to :
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Balloon a is ___ charged and balloon c is ___ charged. If balloon a approaches balloon c there will be a force of blank between them
Balloon A is positively charged, and balloon C is negatively charged. If balloon A approaches balloon C, there will be an electrostatic force of attraction between them.
When two objects carry opposite charges, they exert an attractive force on each other. This force is known as the electrostatic force and follows Coulomb's law. According to Coulomb's law, the magnitude of the electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In this scenario, since balloon A is positively charged and balloon C is negatively charged, they have opposite charges. Therefore, the electrostatic force between them will be attractive. The magnitude of the force depends on the charges of the balloons and the distance between them. It is important to note that without specific information about the charges of the balloons and their distance, it is not possible to determine the exact magnitude of the force. To calculate the force, you would need the values of the charges and the distance between the balloons.
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On Earth spaceship A is 1.2 times longer than spaceship B. When flying at relativistic speeds, spaceship B is 1.15 times longer than spaceship A. If Vp = 0.2c, what is VA?
The observed length of spaceship A (VA) is approximately 1.0435 times the proper length of spaceship A. We can use the Lorentz contraction formula.
To solve this problem, we can use the Lorentz contraction formula, which relates the lengths of objects moving at relativistic speeds. The formula is given by:
L' = L / γ
Where:
L' is the observed length of the object (spaceship) as measured by an observer in a different frame of reference.
L is the rest length or proper length of the object.
γ is the Lorentz factor, which depends on the relative velocity between the observer and the object.
Let's assign the following variables:
LA = Length of spaceship A in its rest frame.
LB = Length of spaceship B in its rest frame.
Vp = Relative velocity between the observer and spaceship B.
According to the problem, spaceship A is 1.2 times longer than spaceship B in their rest frames:
LA = 1.2 * LB
When spaceship B is flying at relativistic speeds, it appears 1.15 times longer than spaceship A:
LB' = 1.15 * LA
We are given that Vp = 0.2c, where c is the speed of light. Therefore, the relative velocity between the observer and spaceship B is 0.2c.
Now, let's calculate the Lorentz factor γ for spaceship B:
γ = 1 / √(1 - (Vp^2 / c^2))
= 1 / √(1 - (0.2^2))
= 1 / √(1 - 0.04)
= 1 / √(0.96)
= 1 / 0.9798
≈ 1.0206
Using the formula for Lorentz contraction, we can now find the observed length of spaceship A (VA) as measured by the observer:
LA' = LA / γ
Since LA = 1.2 * LB, we substitute this value into the equation:
LA' = (1.2 * LB) / γ
Now, we know that LB' = 1.15 * LA, so we can rewrite it as:
LB = LB' / 1.15
Substituting the expression for LB into the equation for LA':
LA' = (1.2 * (LB' / 1.15)) / γ
= (1.2 / 1.15) * (LB' / γ)
Since we are given that LA' = LB' / 1.15, we can substitute this value into the equation:
LA' = (1.2 / 1.15) * LA'
Now, we solve for LA':
LA' = (1.2 / 1.15) * LA'
= 1.0435 * LA'
Therefore, the observed length of spaceship A (VA) is approximately 1.0435 times the proper length of spaceship A.
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Two particle (m1=0. 20kg, m2=0. 30kg) are poitioned at the end of a 2. 0-m long rod of negligible ma. What i the rotational inertia of thi rigid body about an axi perpendicular to the rod and through the center of ma?
The answer is 0.48 kg m^2
Rotational inertia of a rigid body about an axis perpendicular to the rod and through the center of ma
Given,
m1 = 0.2 kg
m2 = 0.3 kg
L = 2 m
Let the centre of mass is at a distance d from 0.2 kg.
So, m1 x d = m2 x (L - d)
0.2 x d = 0.3 x (2 - d)
2 d = 6 - 3d
5 d = 6
d = 1.2 m
Moment of inertia about the centre of mass,
I = m1 x d^2 + m2 x (L - d)^2
I = 0.2 x 1.2 x 1.2 + 0.3 x 0.8 x 0.8
I = 0.288 + 0.192
I = 0.48 kg m^2
Moment of inertia of rigid bodiesAll bodies have a tendency to resist changes to their current states, according to Newton's second law. A body in motion resists change by not coming to a complete halt right away, just as a body at rest resists change when it is put into motion. Similar to this, a rigid body's rotational inertia refers to the amount of torque necessary to modify the angular velocity of the body.
The concept of a rigid body's rotational inertia is crucial since it clarifies how much torque is needed to accomplish a certain goal. The mass of a rigid body and its distribution with regard to the axis around which it rotates have an impact on its rotational inertia.
The distance of the centre of mass from the axis of rotation increases or decreases the rotational inertia of a rigid body.
m1 x d = m2 x (L - d)
How much inertia does the rod have around a perpendicular axis?I=13mL2 I = 1 3 m L 2 is the moment of inertia for a rod that spins about an axis perpendicular to the rod and passing through one end. The moment of inertia is I=112mL2 if the axis of rotation passes through the middle of the rod.
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