given a round object (sphere, disk, hoop for example), doubling only the radius of the object changes its moment inertia by a factor of:

Answers

Answer 1

Using the concepts of moment of inertia, we got that moment of inertia increases by 4  times for all round object (sphere, disk, hoop for example) on doubling only the radius.

We know very well that, moment of inertia of the following object are

Moment of inertia of sphere=(2/5)mr²,Moment of inertia of disk    =(1/2)mr²Moment of inertia of hoop  =mr²

where m is the mass of the object and r is the radius of the object.

We see that moment of inertia is directly proportional to the radius of the object.

It means when we double the radius, then moment of inertia increases by 4 times of its previous value.

Hence, a round object (sphere, disk, hoop for example), doubling only the radius of the object changes its moment inertia by a factor of 4 times.

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Related Questions

a 1500 kg vehicle is traveling on a curved, icy road. the road is banked at an angle of 10.0 degrees and has a radius of curvature of 400 m. the velocity of the car necessary to travel on the icy road without sliding is .

Answers

The vehicle speed required to drive on an icy road without sliding is 28.3 m/s.

The weight of the car is m = 1500 kg

The angle at which the road is inclined is θ = 10

The radius of curvature is r = 400m

The expression for the speed of the car required to travel on the road without sliding is V =[tex]\sqrt{rgtan}[/tex]

V =[tex]\sqrt{400*9.8*tan10}[/tex]

V = 28.3 m/s

Velocity is the rate of change in direction of an object in motion measured by a specific time standard and observed from a specific reference point (for example, 60 km/h north). A key idea in kinematics, the branch of classical mechanics that studies the motion of bodies, is velocity.

The definition of velocity requires both its magnitude and its direction, since it is a physical vector quantity. Velocity is a coherently derived unit that is measured in the SI (metric system) as meters per second (m/s or m/s1). Velocity is a scalar absolute value (magnitude) of speed.

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you are in a rocket ship in deep space, far away from any gravity. you decide to do an experiment to determine the mass of your rocket ship. initially your ship is traveling to the right at 800 m/s, then the engines begin to exert 300,000 n of constant force to the left and do so for 40 seconds. afterward, your rocket ship is traveling to the left at 200 m/s. what is the mass of your rocket ship?

Answers

The mass of the rocket travelling in the space is 20000 kg.

The initial velocity of the rocket is 800m/s.

The final velocity of the rocket is 200m/s.

The time for which the constant force of 300000 Newton is applied is 40 second.

We know that if the force is constant than the acceleration must be constant and for the constant acceleration we can use the equation of motion,

V = U + at

Where,

V is the final velocity,

Uis the initial velocity,

a is the acceleration,

t is the time period.

Putting values,

800 = 200 + a40

600 = 40a

a = 15m/s².

The acceleration of the rocket is 15m/s².

The force on an accelerated bodies given by,

F = Ma

M is the mass of the rocket,

Putting values,

300000 = M(15)

M = 20000 Kg.

So, the mass of the rocket is 20000 kg.

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a heavy brass ball is used to make a pendulum with a period of 5.5 s. part a how long is the cable that connects the pendulum ball to the ceiling? how long is the cable that connects the pendulum ball to the ceiling? 4.7 m 6.2 m 7.5 m 8.7 m request answer provide feedback

Answers

The length of the cable that connects the pendulum ball to the ceiling with a period of 5.5 s is 7.5 m

T = 2 π √ ( L / g )

T = Time period

L = Length of the pendulum

g = Acceleration due to gravity

T = 5.5 s

g = 9.8 m / s²

5.5 = 2 * 3.14 √ ( L / 9.8 )

√ L = 0.88 * √ 9.8

L = 0.77 * 9.8

L = 7.5 m

A simple pendulum consists of a mass suspended in air by a massless and unstretchable string that is fixed to a rigid support on the other end. The time taken to complete on oscillation is the time period of a simple pendulum.

Therefore, the length of the cable is 7.5 m

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a 3 kg block starts from rest at the top of a 30 degree incline and slides a distance of 2 m down the incline in 1.50 seconds. find the magnitude of the acceleration of the block. find the coefficient of kinetic friction between the block and the ramp.

Answers

The magnitude of the acceleration of the block is 1.78m/s².

The coefficient of kinetic friction between the block and the ramp is  0.368.

How can I calculate the coefficient of kinetic friction?

The resistive force of friction (Fr), which pushes the objects together, is divided by the normal or perpendicular force (N), which pushes them apart, to produce the coefficient of friction (fr), which is a numerical value. The following formula represents it: fr = Fr/N.

Given,

m=3.00kg, θ=30° ,

x= 2.00m, t=1.50s.

constant rate of acceleration,

[tex]X_{f} = v_{i} t[/tex] + 1/2at²

solving,

a = 2([tex]X_{f}[/tex]-[tex]v_{i} t[/tex])/t²

a = 2(2-0)/(1.5)²

a = 1.78m/s².

We have neither a burrowing-in nor a taking-off action when Newton's law is applied in the y direction, which is perpendicular to the inclination. The y component of acceleration is then equal to zero:

 ∑ [tex]F_{y}[/tex]=n–mgcosθ=0

Thus n=mgcosθ

Because  f=[tex]\mu_{k}[/tex]n

[tex]\mu_{k}[/tex] = f/mgcosθ

[tex]\mu_{k}[/tex] = 9.37/3×9.8×cos30°

[tex]\mu_{k}[/tex] = 0.368.

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Use the information from the graph to answer the
What is the total displacement of the object?
question.
m
Velocity vs. Time
Velocity (m/s)
40
30
20
10
0
Time (s)
0
5
10
15
20
25

Answers

Answer:

The total displacement 560 m

Explanation:

 Given:

t₀ = 0 s

t = 25 s

V₀ = 10 m/s

V = 35 m/s

___________

D - ?

Acceleration:

a =  (V - V₀) / (t - t₀) = (35 - 10) / (25 - 0) = 25 / 25 = 1.0 m/s²

The total displacement:

D = V₀·t + a·t² / 2

D = 10·25 + 1.0·25² / 2 ≈ 560 m

Which is an outer planet in our solar system?

A.Earth
B.Jupiter
C.Mars
D.Venus

Answers

Question:

Which is an outer planet in our solar system?

Answer:

B. Jupiter

Answer: Jupiter

Explanation: As its situated outside the asteroid belt

a model airplane with mass 0.750 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.0 m in radius. the airplane engine provides a net thrust of 0.800 n perpendicular to the tethering wire. (a) find the torque the net thrust produces about the center of the circle. (b) find the angular acceleration of the airplane. (c) find the translational acceleration of the airplane tangent to its flight path.

Answers

The force on the section of the wall of the airplane is 3N.

The pressure outside the cabin of the commercial airplane is 0.150 atm and the pressure inside the airplane cabin is 0.900 atm.

The dimensions of the section of wall of the airplane are 2.00 m × 2.00m.

The area of the section = 4.00 m².

We know,

Force applied on the portion = pressure applied on that area × area

So, the force on the section of the wall of airplane will be,

Force  = (0.900-0.150)×4

Force = 3N.

So, the force on the airplane is 3 Newtons.

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Salem, Sabrina’s magical black cat, gets scared and jumps straight upward with an initial velocity of 20 m/s from a height of 115-meters.

Draw a velocity vs time graph to describe the cat’s motion for the first five seconds of motion.
What is the cat’s velocity and acceleration at it’s maximum height?
What is the cat’s velocity when it hits the ground?
How long does it take for the cat to hit the ground?

PLS HELP!!!!!

Answers

Considering a quadratic equation to model the height of the car, we have that:

The graph is given at the end of the answer.At the maximum height, the velocity is of zero and the acceleration is of -9.8 m/s².The velocity when the cat hits the ground is: -51.54 m/s.It takes 7.30 seconds for the cat to hit the ground.

What is the quadratic equation for a projectile's height?

Considering an acceleration = gravity of -9.8m/s², the equation for the height is given as follows:

h(t) = -4.9t² + v(0)t + h(0).

In which:

v(0) is the initial speed.h(0) is the initial height.

Considering the values of these parameters for this problem, of v(0) = 20, h(0) = 115, the equation is:

h(t) = -4.9t² + 20t + 115.

At the maximum height point, we have that:

The velocity is of zero. (standard)The acceleration if of -9.8 m/s². (standard).

The velocity function is:

v(t) = v(0) - gt

v(t) = 20 - 9.8t.

Which is the linear function graphed at the end of the answer.

The cat hits the ground at t > 0 for which h(t) = 0, hence:

-4.9t² + 20t + 115 = 0.

Which is a quadratic equation with coefficients given by:

a = -4.9, b = 20, c = 115.

Using a calculator, the positive solution for this equation is:

t = 7.30s.

At this instant, the velocity is:

v(t) = 20 - 9.8(7.3) = -51.54 m/s.

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Which formula is used to find the growth rate of a population? O Death rate - Birth rate = Growth rate O Death rate x Birth rate= Growth rate O Birth rate - Death rate= Growth rate O Death rate + Birth rate = Growth rate​

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The formula used to find the growth rate of a population is Birth rate - Death rate = Growth rate.

Population growth = ( Initial population - Population at time measured ) /  Initial population * 100

The population growth rate is also called as rate of natural increase. The average change in population size annually is population growth rate.

Birth rate is the number of births occurring per 1000 population. Death rate is the number of deaths occurring per 1000 population. Since the values are taken per 1000, to find the percentage value the values are divided by 10.

Therefore, the formula used to find the growth rate of a population is Birth rate - Death rate = Growth rate.

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find the moment of inertia of a point of mass of 0.005g at a perpendicular distance of 3m from its axis of rotation.

Answers

Answer:

Explanation:

Given:

m = 0.005 g = 5·10⁻⁶ kg

R = 3 m

__________

J - ?

J = m·R² = 5·10⁻⁶·3² ≈ 45·10⁻⁶ kg·m²

Answer:

The snapshot of idleness of given point mass still up in the air by,

Where,

- snapshot of idleness

- mass = 0.005 g = ( 0.005/1000 ) = 5 × 10⁻⁶ kg

- opposite distance = 3 m

Put the qualities in the equation,

Hence; the snapshot of idleness of given point mass is 4.5 × 10⁻⁵ kgm².

To find out about snapshot of idleness,

Explanation:

Snapshots of dormancy can be found by adding or coordinating over each 'piece of mass' that makes up an article, increased by the square of the distance of each 'piece of mass' to the hub. In vital structure the snapshot of latency is I=∫r2dm I = ∫ r 2 d m .

For a planar item, the snapshot of idleness about a hub opposite to the plane is the amount of the snapshots of dormancy of two opposite tomahawks through a similar point in the plane of the article. The utility of this hypothesis goes past that of computing snapshots of rigorously planar items.

Picture result for track down the snapshot of idleness of a mark of mass of 0.005g at an opposite distance of 3m from its hub of revolution.

What is snapshot of inactivity of an empty circle about a hub going through its middle ? Arrangement : 'I = (2)/(3) MR^(2)', where 'M' is the mass and 'R' is sweep of the empty circle.

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single mark on the sidewalk next to the snail.

Answers

Julie left a single mark on the sidewalk, and that mark has served as a starting point for me to track the snail's movement. Hence, option D is correct.

What is a snail?

In broad terms, a snail is a shelled gastropod. The name is most commonly used in reference to land snails, that are pulmonate gastropod mollusks. However, the majority of the Gastropoda molluscan—which have coiled casings big enough for the animal to completely retract into—are also referred to as snails by their popular name. When used in this broad sense, the word "snail" refers to many different kinds of freshwater and marine snails, as well as land snails.

The distance traveled has been calculated using the reference point represented by the line that has been drawn across the sidewalk. So, choice D is the right one.

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Your question is incomplete, your question probably is :

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a

single mark on the sidewalk next to the snail.

What will Julie use the mark for initially?

determining how fast the snail moves

acting as a standard unit of measure

determining the displacement of the snail

O acting as a reference point for detecting motion


A 3000 W oven is cooking your Sunday roast for 1 hour and
35 minutes. How much did it cost to cook it?

Answers

Cost estimated is ₹[19/4]y/-.

Given :- Power=3kW  , Time=1hr 35min

Now to convert this time completely into hours following steps can be adopted:- 1 min =1/60 hour,       so 35min =35/60 hour

35min= 35/60 =7/12 hour

So total computed time = 1hr + [7/12]hr

computed time =19/12hr

Now since in the question there is no mention about cost , so let the cost be ₹y/unit.

Mathematically , Energy is the product of power and time , i.e.

E= Power x Computed time = 3 x 19/12 = 19/4 units.

Now the energy estimated is 19/4 units whose cost equivalent will be ₹[19/4]y/- , as cost of one unit energy  is ₹y/- so cost of 19/4 energy units will be ₹[19/4]y/-.

Once the cost of one unit energy is known to us then just its value in the place of y and we will get the exact amount expended on the total energy consumption.

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In which situation would the use of a vector quantity be most appropriate? (1 point)


determining the net force that is acting on an object

determining the high and low temperatures on any given day

determining whether it takes more time to melt ice or to melt butter

determining whether a van is moving faster than the speed limit

Answers

The situation that would be most appropriate to the use a vector quantity is determining the net force that is acting on an object.

option A is the correct answer.

What is vector quantity?

Vector quantities are the physical quantities characterized by the presence of both magnitude as well as direction.

Examples of vector quantities include the following;

Displacement, force, torque, momentum, acceleration, velocity, etc

Scalar quantities, are those physical quantities that have only magnitude without direction. Example is temperature.

Thus, the situation that would be most appropriate to the use a vector quantity is the situation that needs to be described by both magnitude and direction.

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a wheel and axle on a bicycle are designed with an axle radius of 0.125 meters and a wheel radius of 0.5 meters. if a force of 800 newtons is applied to the axle, what is the maximum output force of the bike wheel?(1 point)

Answers

The maximum output force of the bike wheel is equal to 40000 newtons.

The maximum output force of the bike wheel is calculated by using the equation:

F = R^2 * P, where F is the force exerted by the wheel on the axle, R is the radius of the axle, and P is the applied force. So we have: 800 N = (0.125 m)^2 * (800 N)

Rearranging gives us: 2 * R^2 = 800 N

Solving for R gives us: 0.5 m = 40000 N/m^2

This means that we must have a radius of 0.5 meters to produce an output force of 40000 newtons.

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2 balls ball 1 and ball 2 are each thrown horizontally from the same height above the ground. ball 2 has a greater initial velocity after leaving the thrower's hand than ball 1. if air resistance is negligible how do the accelerations of each ball and the time it takes each of them to hit the ground compare?

Answers

acceleration on both the balls is same

Time to hit the ground is also equal for both the balls.


Here the acceleration is only acceleration due to gravity in vertically downward direction.

No acceleration in horizontal direction as air resistance is neglected.

Both the balls are projected from same height and downward acceleration is same and there is no initial downward velocity ,hence both the balls take same time to hit the the ground.

Time to hit the ground is also equal for both the balls.

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A ball is thrown horizontally with a velocity of 12m / s . How long will it take for the ball to hit the ground if it is released 3.5 m from the ground ? Assume no air resistance
A.3.4s
B.1.1s
C.0.85s
D.0.30s

Answers

The time taken by the ball is 0.30s.

What is the time taken?

We know that the horizontal velocity has to do with the speed of the object has it moves along a horizontal path. In this case, we can see that the ball is thrown horizontally with a velocity of 12m / s. We have also been told in this question as we have it here to assume that there was no air resistance that is involved.

Thus we have;

Horizontal speed of the ball =  12m / s

Distance covered by the ball =  3.5 m

Let us see that;

V = s/t

V = speed

s = distance

t = time

t = s/V

We should now have;

t = 3.5 m/12 m/s

t = 0.30s

We can now see that the time that t would take the ball to hit the ground is 0.30 seconds of time.

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Answer:

Explanation:

Given:

Vₓ = 12 m/s

H = 3.5 m

g = 9.8 m/s²

__________

t - ?

According to the principle of independence of motion, we find the fall time from the formula:

H = g·t²/ 2

t = √ (2·H / g)

t = √ (2·3.5 / 9.8 ) ≈ 0.85 s

Correct answer:

C.  0.85 s

Point l is located a distance d2–√ from the midpoint between the two wires. Find the magnitude of the net magnetic field bl created at point l by both wires.

Answers

the magnitude of the magnetic field bl created at point l by both wires. is  0.0071 μI / d

since we know the formula we can refer to the magnetic field is

B=  μI / 2πR

where I is the current  flowing through the  wires, R is the distance  

Here Using the Pythagoras theorem

R= √d² + (2d)²

R = √d² + 4d²

r = √5d²

r = d√5

substituting the value of R in the formula, we get

= μI / 2π(d√5)

=   μI / 2dπ√5

=  (1 / 2π√5)(Iμ/d)

=0.0071 μI / d

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What do you think happens to a sound wave when the volume of sound increase

Answers

Answer:

sound wave's amplitude relates to the change in pressure caused by the wave measured at a specific location. The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases.

A 1.80-kg block is suspended from a spring with a spring constant of 220.0 N/m. A 0.060-kg bullet is fired into the block from directly below with a speed of 270.0 m/s and is embedded in the block. (A) Find the amplitude of the subsequent motion. (B) What fraction of the original kinetic energy of the bullet appears as mechanical energy in the system of block-spring-bullet?

Answers

The fraction of the original kinetic energy of the bullet appears as mechanical energy in the system of block-spring-bullet is 0.72 m.

Amplitude=0.72 m

KE of system=0.5*(1.8+0.06)*8.7^2=70.39 j

Conservation of momentum

0.06*270=(1.8+0.06)*v

v=8.7 m/s

conservation energy

0.5*(1.8+0.06)*8.7^2=0.5*220*x^2+(1.8+0.06)*9.81*x

x=0.72 m

Amplitude=0.72 m

Original KE of bullet = 0.5*0.06*270^2=2187j

KE of system = 0.5*(1.8+0.06)*8.7^2=70.39 j

Amplitude in physics is stated to be the maximum displacement or distance that is moved by a factor on a body that is vibrating or wave measured from its equilibrium role.

As the pendulum swings through its equilibrium point (straight down), it swings to a maximum distance away from the center.

The amplitude of a wave is related to the amount of energy it includes. An excessive amplitude wave consists of a massive amount of power; a low amplitude wave consists of a small quantity of strength. Amplitude and intensity are associated, but not equal.

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Two vehicles r moving in the same direction one has the velocity of 24m/s and another has 18m/s.find their relative velocity & also their relative velocity when they are in opposite direction

Answers

When a body is moving in the same direction, its relative speed is 6m/s, while when it is moving in the opposite direction, it is 42 m/s.

Describe relative velocity and its unit.

The units used to measure speed and velocity are the same. The meter is the SI unit for measuring both distance and displacement. The second is the second as defined by the International System of Units. Two meters per second divided by two is the SI unit of velocity and speed.

What does Class 11 formula for relative velocity mean?

It is calculable using an intermediary reference frame. The velocity vector sum can be used to represent this simply. vAB = vA - vB is the way to express the relative velocity formula.

velocity is the same as the relative velocities of A and B.

A=24,B=18

Vab=24-18=6m/s

In opposite direction

Vab=24-(-18)=42m/s

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The oxidation of copper(I) oxide, Cu 2 O ( s ) , to copper(II) oxide, CuO ( s ) , is an exothermic process. 2 Cu 2 O ( s ) + O 2 ( g ) ⟶ 4 CuO ( s ) The change in enthalpy upon reaction of 98. 93 g Cu 2 O ( s ) is − 100. 9 kJ. Calculate the work, w , and energy change, Δ U rxn , when 98. 93 g Cu 2 O ( s ) is oxidized at a constant pressure of 1. 00 bar and a constant temperature of 25 ∘ C. Note that Δ E rxn is sometimes used as the symbol for energy change instead of Δ U rxn

Answers

Copper II oxide is created through the oxidation of copper I oxide, cu2os cu2os. Cuo s An exothermic reaction is Cuo S. The formula is 2cu2o s)+ o2 G 4cuo S.

A simple definition of oxidation is what?

Cu2O(s), a copper(I) oxide, is oxidized to copper(II) oxide, CuO, by exothermic processes (s). Cu2O(s), a copper(I) oxide, is oxidized to copper(II) oxide, CuO, by exothermic processes (s).

An oxidation reaction is a chemical process that takes place when an object comes into contact with oxygen or another oxidizing agent (OK-sih-DAY-shun). Oxidation is characterized by the brown hue of sliced apples and rust. In the past, the term "oxidation" was used to describe any chemical reaction that involved oxygen and an element. When magnesium metal and oxygen react, magnesium oxide is produced as a result, which serves as an illustration of this.

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in this problem, you will use lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. you will need to use the right-hand rule to find the direction of the induced current. the switch on the electromagnet, initially open, is closed. what is the direction of the induced current in the wire loop (as seen from the left)?

Answers

The magnetic fuse dropped and the field's magnetic direction remained the same when the switch was reopened in this case. following which the loop's current flows in a clockwise direction.

iron filings on paper placed above a bar magnet to represent the direction of magnetic direction. Compass needles point in the direction of the surrounding magnetic field, away from the north pole of a magnetic direction towards its south pole. The movement of electrical charge carriers like electrons is known as current. Positive and negative locations both experience current flow. The ampere is the SI unit for calculating electrical current (A). The movement of electrical charge carriers like electrons is known as current. Positive and negative locations both experience current flow. The ampere (A) is the SI unit used to measure electric current.

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Describe the motion of a hockey puck between the instant the puck leaves a player's stick and the instant it hits something. (No "slap shot" allowed, the puck must remain in contact with the ice.)

Answers

Answer:

Explanation:

it will have constant friction,  or slowing, as it slides along the ice.

A caterpillar tries to climb straight up a wall two meters high, but for every 2 cm up it climbs, it slides down 1 cm. Eventually, it reaches the top. When it reaches the top, it does not pull itself over so it will slide down 1 cm. At this point, the caterpillar was exhausted and fell to the ground. What is the total displacement?

In the first box, select the total displacement. In the second box, indicate the direction whether up, down or n/a.

Answers

It is to be noted that the total displacement is 0cm. Note that displacement is different from distance traveled.

What is displacement in Physics?

Displacement is described as the total change in an object's location as well as the direction of motion.

The formula is given as:

Displacement = Final position – initial position = change in position.

Given that the caterpillar falls back to the ground, it means that the total displacement is zero.

Final Position = 0

Initial position = 0

Displacement, thus = 0-0 =0

When distinguishing between displacement and distance, we know that distance is the total length of the path between any two places.

Displacement is defined as the direct length between any two places measured via the shortest path between them.

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a merry-go-round with a radius of 1.5 m is spinning at 2.0 rad/s when a young girl pushes on it for 5.0 revolutions applying an acceleration of 3.0 rad/s2. what is the final angular velocity of the merry-go-round?

Answers

The final angular velocity of the merry-go-round is 8 rad/s.

The radius of the Merry-go-round is 1.5 m and it is spinning with a speed of 2rad/s the girl pushes on it for 5 revolutions which applies and acceleration of 3rad/s².

The final angular velocity of the merry-go-round can be given by the equation,

W'² - W² = 2AS

Where,

W' is the final angular velocity,

W is the initial angular velocity,

A is the angular acceleration,

S is the angular displacement which is 10 rad in this case.

Putting values,

W'² - (2)² = 2(10)(3)

W' = 8rad/s.

So, the final angular velocity is 8rad/s.

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the magnitude of kf depends on the identity of the [ select ] and the magnitude of kb depends on the identity of the

Answers

magnitude of kf  and the magnitude of kb depends upon the identity of solvent

what is kf and kb?

Kf is the depression in freezing point produced by 1 molal solution of a nonvolatile solute while Kb is the elevation in boiling point produced by 1 molal solution of a nonvolatile solute.

Boiling point elevation is the difference in temperature between the boiling point of the pure solvent and that of the solution.

Molality is defined as the total number of moles of solute per kilograms of solvent present in the solution.

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the hydrogen in a star emits light at 484 nm as observed by an astronomer. which describes the motion of the star if the laboratory value of this spectral line of hydrogen is measured at 486 nm? question 9 options: approaching at 6.17 105 m/s moving away at 6.17 105 m/s approaching at 1.23 106 m/s moving away at 1.23 106 m/s

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If the laboratory value of this hydrogen spectral line is detected at 486 nm, the star is moving toward us at a speed of 6.17 105 m/s.

How might Bohr's theory explain the hydrogen spectrum?In less than a year, Niels Bohr had a hydrogen atom model that "explained" the spectral lines. The energy level was a novel idea that Bohr introduced. Sharp spectral lines were released when an electron in hydrogen moved from one of its permitted energy levels, which were defined by the hydrogen atom.The wavelengths, measured from the scale, are 435 nm (purple), 486 nm (blue), and 657 nm (red).Hydrogen has numerous different energy levels while having just one electron. A photon is released when an electron in an object jumps from one energy level to another. Due to the various levels, those photons produce light with various colors and wavelengths.

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what is the improvement in the frequency response of the modified equalizer and what benefits does that bring to the system?

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An equalizer is used to adjust or correct the audio signal by boosting or lowering sound frequency. It will affect the sound output for the listener with an altered audio color. In other words, it is used to balance sound in the system.

Audio equalization itself is a process of balancing (boosting or lowering) the sound frequency to make better audio output. For example, tweaking the treble frequency will make the vocal audible, boosting the bass will make the sound heavier, and so many more to tune the sound to your audio taste.  In addition, an equalizer can also be used as noise reduction.

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the graph below shows the position vs. time for a 932 kg cart moving along a horizontal track. To the nearest tenth of a kilojoule, what is the car's kinetic energy at 8.0 seconds?​

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Answer:use 1/2 x M x V^2

Explanation:

to calculate the kinetic energy, observe the velocity from the graph at 8.0 seconds. and use the formula!

Which of the following graphs represent an object at rest? (There could be more than one correct cho 0' 0' 0 0 graph a graph b graph c graph d

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Graph A, because distance-time graph is a straight line parallel to the time-axis because the position of the object does not change when it is at rest.

Distance is the length between two points or items, and it is directionless. Since distance is a scalar attribute, it only takes into account the overall magnitude and ignores the start and end locations. Being a scalar attribute, distance may only be positive or zero; it cannot be the opposite.

Although kilometers (km) and centimeters (cm) or millimeters (mm) can also be used to express shorter distances, the meter (m) is the most used unit of measurement for distance (mm). When calculating distance, the letter D is usually used to denote the distance traveled.

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