A closed pipe creates a fifth
harmonic frequency of 125 Hz.
What is the next lower frequency
that will create a standing wave in
the pipe?
(Speed of sound = 343 m/s)
(Unit = Hz)
PLEASE HELP QUICKLY, WILL GIVE BRAINLIEST

Part A: The statement "The magnitude of the buoyant force is equal to the weight of the fluid displaced by the object" is true only for an object that is floating.

This is because, when an object is floating, it is in equilibrium with the fluid; the buoyant force acting on the object is equal to the weight of the fluid it displaces, which is also equal to the weight of the object. This means that the buoyant force is equal to the weight of the object.

Part B: The statement "The magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same volume as the object" is true for an object that is partially submerged in a fluid.

This is because, when an object is partially submerged, the buoyant force acting on it is equal to the weight of the amount of fluid that has the same volume as the object. Since the buoyant force is equal to the weight of the object, this statement is true.

Part C: The statement “The magnitude of the buoyant force equals the weight of the object" is false for any object partially or completely submerged in a fluid.

This is because the buoyant force acting on the object is not equal to its weight; rather, the buoyant force acting on the object is equal to the weight of the fluid it displaces, which is less than the weight of the object. Therefore, this statement is false.

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Complete question:

G an object is placed in a fluid and then released. assume that the object either floats to the surface (settling so that the object is partly above and partly below the fluid surface) or sinks to the bottom. (note that for parts a through d, you should assume that the object has settled in equilibrium.)

Part A Consider the following statement The magnitude of the buoyant force is equal to the weight of fluid displaced by the object Under what circumstances is this statement true? Hints O for every object submerged partially or completely in a fluid

O only for an object that is floating

O only for an object that is fully submerged and is sinking

O for no object submerged in a fluid

Part B Consider the following statement The magnitude of the buoyant force is equal to the weight of the amount of fluid that has the same al volume as the object. Under what circumstances is this statement true? Hints

O for an object that is partially submerged in a fluid

O only for an object is floating

O for an object completely submerged in a fluid

O for no object partially or completely submerged in a fluid

Submit My Answers Give Up

Part C Consider the following statement The magnitude of the buoyant force equals the weight of the object. Under what circumstances is this statement true?

O for an object that is partially submerged in a fluid

O only for an object is floating

O for an object completely submerged in a fluid

O for no object partially or completely submerged in a fluid

Answer: a or b can u pls give me brainlest

Explanation:A straight line is a curve with constant slope. Since slope is acceleration on a velocity-time graph, each of the objects represented on this graph is moving with a constant acceleration.

The initial speed of the second ball if they are both reach the ground at the same time is 19.8 m/s.

The initial speed of the second ball is calculated as follows;

v = √2gh

v = √(2 x 9.8 x 45)

v = 29.7 m/s

t = √(2h/g)

t = √(2 x 5/9.8)

t = 1.01 s

vf = vi + gt

29.7 = vi + 9.8(1.01)

29.7 = vi + 9.9

vi = 19.8 m/s

Thus, the initial speed of the second ball if they are both reach the ground at the same time is 19.8 m/s.

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(sorry something wrong w my keyboard so write each line for the explnation!)

63.0 m

Explanation:

Acceleration of car

=

v

−

u

t

=

0 ms

−

1

−

21.0 ms

−

1

6.00 s

=

−

3.50 ms

−

2

S

=

v

2

−

u

2

2a

S

=

(

0 ms

−

1

)

2

−

(

21.0 ms

−

1

)

2

2

×

−

3.50 ms

−

2

S

=

63.0

m

Answer:

i think the correct answer is B. cancel out

I uploaded the answer to a file hosting. Here's link:

tinyurl.com/wpazsebu

The statement that is NOT true is "the spaces between the particles increased.

option D.

If we consider the solids and liquids, when the temperature increases the molecules gain energy and start moving in all directions. This expands the substance and the volume of the substance increases.

Similar, when the ball is heated, the volume of the ball increases due to thermal expansion.

As the temperature increases, the average kinetic energy of the particles within the ball also increases, causing them to move faster.

However, the spaces between the particles do not necessarily increase. In fact, the expansion of the ball occurs due to the particles themselves moving farther apart, but the intermolecular spacing within the ball remains relatively constant.

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There are 90 phones of volume, 10-7 W/m2 of sound intensity, and 0.0314 watts of source power.

A straightforward frequency analysis compares the values of the fields you provide and generates a report listing each value for those fields along with the frequency at which each value occurs.

The rate at which a sound power wave repeats itself, also known as frequency or pitch, is measured in cycles per second. Bullfrog calls and cricket chirps have lower frequencies than drum beats and whistles, respectively.

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The correct answer 12.611 mph.

Cyclist traveling in a northwest direction at a speed of 16 mph. (Directed 45 degrees from the North)

Cycling speed is therefore 16 sin (45 o) in the direction of the north and 16 cos (45)  in the direction of the west

Let's assume that this is located on a cartesian plane. Let the positive Y-axis be north and the positive X-axis be east.

Speed = \(V_c\) = (-16/√2 i + 16/√2 j) mph

In relation to a cyclist, the wind speed is = \(V_{cw\) = 17 i mph

Let, V_w thus,

\(V_{cw = V_w - V_c\)

\(V_w = V_{cw + V_c\)

\(V_w\) = 17i +  (-16/√2 i + 16/√2 j)

\(V_w\) = (17 - 16/√2) i + 16/√2 j

\(V_w\) = 5.6 i + 11.3 j

| \(V_w\)| = 12.611

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The final momentum of the artist-clay system immediately after collision is -82 kgm/s.

Assuming that the initial momentum of the clay was 3.0 kgm/s and the initial momentum of the potter was -85 kgm/s, we can use the law of conservation of momentum to find the final momentum of the artist-clay system immediately after the collision:

Initial momentum = Final momentum

(3.0 kgm/s) + (-85 kgm/s) = Final momentum

-82 kg×m/s = Final momentum

Therefore, the final momentum of the artist-clay system immediately after the collision is -82 kgm/s.

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The magnitude of the net force on the object is 7.15 N.

The resultant velocity of the object is calculated as follows;

|v| = √[(x₂ - x₁)² + (y₂ - y₁)² + (z₂ - z₁)² ]

where;

|v| = √[(-3.75 - 4.04)² + (0 - -4.96)² + (4.44 - 4.44)² ]

|v| = 9.24 m/s

The net force experienced by the object is calculated as follows;

F = ma

F = (mv)/t

F = (2.97 kg x 9.24 m/s) / (3.84 s)

F = 7.15 N

Thus, we can conclude that the object will experience a net force of 7.15 N.

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Answer:

Table C:

Fan Speed Observations of Position vs. Time Graphs

Low:

The slope is curved and it increases as you go up . The points start off close but they spread out as the time increases.

Medium:

The speed increases quicker than the graph for low speed. The graph is less curved than the one for low speed. Also, the points spread out faster than they did for low speed as the time increases.

High:

The Graph has a smaller curve then the low and medium speed. Also, the points are the furthest apart. The slope is not as spaced out as it was for the rest of the speed graphs.

Explanation:

hope it helps

Variations in the angle of inclination or the mass of the cart could be investigated further to investigate the impact on acceleration and further validate the principles of constant acceleration motion.

Objective: The goal of this lab experiment was to investigate the motion of an item with constant acceleration and to examine its velocity as a function of time.

Materials:

Smooth, inclined plane

Cart or tiny wheeled object

Stopwatches and timers

Measuring tape or meterstick

Procedure:

Set up the inclined plane at a 45-degree angle () to the horizontal surface. Check that the plane is smooth and clear of obstacles.

Place the cart or small wheeled object at the bottom of the inclined plane.

Using a meterstick or measuring tape, determine the height (h) and length (L) of the inclined plane.

Ascertain that the cart is at rest at the starting point, which is located at the bottom of the inclined plane.

As soon as the cart is freed and begins to move, start the stopwatch or timer.

Calculate the time (t) it takes the cart to reach each place along the inclined plane. To ensure reliable data gathering, repeat the experiment numerous times.

Determine the time intervals (Δt) between each position for velocity analysis

Data:

Position (m) Time (s) Time Interval (Δt) (s)

0.0                   0.00           -

0.5                   0.50        0.50

1.0                   0.75        0.25

1.5                    1.10              0.35

2.0                    1.50        0.40

Analysis:

Calculate the average velocity between each position by dividing the position change by the time interval (x/t).

Create a graph that plots average velocity (V_avg) versus time (t).

Results:

A straight line emerges from the graph of average velocity against time, demonstrating that the cart's motion was subject to continuous acceleration along the inclined plane. The slope of the graph reflects the acceleration (a) of the cart.

Conclusion:

The experiment successfully demonstrated motion along an inclined plane with constant acceleration. The graph of average velocity vs time revealed important information about the cart's speed, with a linear relationship suggesting steady acceleration. This experiment emphasizes kinematic principles and the significance of using velocity-time data to understand the motion of objects under constant acceleration.

Hence, variations in the angle of inclination or the mass of the cart could be investigated further to investigate the impact on acceleration and further validate the principles of constant acceleration motion.

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Answer:

Heres on ex.

When the driver of a bus applies brake suddenly, the lower part of the body comes to rest as the bus comes to rest but, the upper part of the body continues to move forward due to inertia of motion.

Explanation:

According to the 10 percent law, only 10% of the energy transferred to each trophic level from its lower trophic level. 10,000 joules of energy is available to the producer, then only 1000 joules of energy will be available to the primary consumer and only 100 joules of energy will be available to the secondary consumer. The energy available with the tertiary consumer will be 10 joules of energy.

According to the 10% rule of energy transfer, only about 10% of the energy available at one trophic level is transferred to the next trophic level. So, we can use this rule to estimate the amount of energy transferred from primary producers to first-level, second-level, and third-level consumers. If the primary producers have 10,000 units of stored energy, we would expect approximately:

1,000 units of energy to be transferred to first-level consumers,

100 units of energy to be transferred to second-level consumers,

10 units of energy to be transferred to third-level consumers.

The 10% rule provides a useful baseline for understanding energy flow in ecosystems but actual energy transfer can vary depending on various factors such as ecosystem productivity, food chain complexity, and trophic interactions.

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Based on the principle of moments and the data provided;

The principle of moments states that the for a body in equilibrium, the sum of the clockwise moments is equal to the sum of the anticlockwise moments about a point.

At the point where the uniform rod is about to tilt, it is at equilibrium.

Anticlockwise moments = 30 × (1.3 - 0.5) = 24

Clockwise moments = m × (2.5 - 1.3)

where m is the mass of the end

Clockwise moments = m × 1.2

1.2 × m = 24

m = 20 Kg

Therefore, the mass of the rod is 20 kg

Assuming the boy moves to B and a block of mass X is placed at:

Anticlockwise moments = 30 × 1.3 = 39

Clockwise moments = 20 × 1.2 + X × 3.7

Clockwise moments = 24 + 3.7X

39 = 24 + 3.7X

3.7X = 15

X = 4.054 kg

Therefore, the smallest value of X of the block that will enable the boy to stand on the beam at B without the beam tilting is 4.054 kg

Assuming that the block is a particle allowed the assumption that the block touches the rod at only a point.

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Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

PE = 10 × 9.8 × 20

We have the final answer as

Hope this helps you

Answer:

Momentum is computed using below formula.

Momentum = Mass x Velocity,

The problem states that the final velocity is 6.0m/s, Substituting onto the equation we have

Momentum = 1000 kg x 6.0 m/s = 6000 kg · m/s

Explanation:

hope it help ;)

The final momentum of the car is the product of its mass and final velocity. The final momentum of the car of 1000 kg with the final velocity of 6 m/s is 6000 kg m/s.

Momentum of an object is its ability to bring the force to make the maximum displacement. In physics, momentum is the product of mass and velocity of the object.

The initial velocity of the car = 2 m/s

mass = 1000 kg

final velocity = 6 m/s.

The acceleration of the car when changing from a velocity of 2 to 6 m/s within 5 seconds is:

a = Δv/t = 4 m/s/5 s = 0.8 m/s²

The final momentum of the car = mass × final velocity

P = 1000 kg × 6 /s = 6000 kg m/s.

Therefore, the final momentum of the car is 6000 kg m/s.

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Given data

*The given mass is m = 4.0 kg

*The constant angular speed is

*The given linear speed is v = 5.00 m/s

The radius is calculated as

The formula for the radial force is calculated as

The statement regarding work and retirement that is true is that most older Americans say they would prefer to enter retirement gradually.

Retirement is defined as the time in an individuals life that such leaves the Labour market or the workforce.

In some countries such as the United States of America, most elderly citizen prefer taking retirement process slowly.

Therefore, the statement regarding work and retirement is that retirement is a gradual process which one starts to process while actively in service

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You must concentrate on the catch to win a water balloon contest without breaking the balloon. Momentum, impulse, force, and impact time are all important factors in the catch's success. The key to catching a water balloon without breaking it is to reduce the balloon's impact force. The momentum of the balloon, the impulse applied to the balloon, and the impact time all contribute to the impact force.

The product of an object's mass and velocity is its momentum. As it is thrown towards you, the water balloon has a certain mass and velocity. The greater the balloon's momentum, the more difficult it will be to catch it without breaking it.

In order to catch a water balloon, you must apply an impulse to the balloon. The higher the impulse, the more effectively you can stop the balloon. To catch a water balloon without breaking it, apply a large impulse to the balloon in a short period of time. This reduces the impact force on the balloon and keeps it from breaking.

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Answer: Positive

Explanation:

Are you familiar with differential calculus? In a plot of position vs. time, the velocity at any given moment is the derivative at that point. A derivative is just the slope. For this plot, the slope is x/t.

Looking at t = 1s, the slope is 1/1. This means the velocity is a positive 1m/s at time equal to 1 second

Answer:

The ability to do work

Explanation:

Energy can be defined as the ability to do work. We apply energy in basically everything we do in life, energy is needed to walk or move from one position to another, it is required to eat and do other basic things of life. The body system converts the food that is being consumed into energy, this energy can be switched from one form to another.

There are various forms of energy which include solar energy , wind energy, electrical energy, mechanical energy, kinetic energy, potential energy etc. This forms of energy can be converted from one form to anothe but cannot be destroyed.

Answer:

ability to work

Explanation:

Answer:

1) = approximately 74 km/hr
2) = 9:30 AM
3) Avg speed = 28 km/hr
   vel = 0.

Explanation:

Here is how you do it:

1) To find the student's speed, we can use the formula:

Speed = Distance / Time

The student traveled a total distance of 40 km south and 15 km north, which gives a total distance of 40 km + 15 km = 55 km. The total time of travel was 0.75 hours.

Speed = 55 km / 0.75 hr ≈ 73.33 km/hr

Therefore, the student's speed is approximately 73.33 km/hr or 74 km/hr.

To calculate the student's velocity, we need to consider both magnitude and direction. Since the student ended up at the same position as the starting point, the displacement is zero. Therefore, the velocity is also zero.

2) The distance between Houston and Austin is 190 miles. The bus is traveling at a constant speed of 54.3 miles/hour. We can use the formula:

Time = Distance / Speed

Time = 190 miles / 54.3 miles/hour ≈ 3.50 hours

The bus will arrive in Austin approximately 3.50 hours after leaving Houston.

If the bus leaves Houston at 6:00 am, it will arrive in Austin around 9:30 am.

3) The girl rode 5 km east and then turned around and rode 2 km west. The total distance traveled is 5 km + 2 km = 7 km. The entire trip took fifteen minutes, which is equal to 15/60 = 0.25 hours.

Average Speed = Total Distance / Total Time

Average Speed = 7 km / 0.25 hr = 28 km/hr

Therefore, the girl's average speed is 28 km/hr.

To calculate the girl's velocity, we need to consider both magnitude and direction. The girl's initial direction was east, and her final direction was west. Since the starting and ending points are the same, the displacement is zero. Therefore, the velocity is also zero.

Answer:

50µs

Explanation:

The conversion is that 1 second equals 1,000,000 micro seconds. Since we have 0.00005 seconds, we will multiply that to a million.

0.00005 * 1,000,000 = 50µs

Keep in mind that 50 only has 1 significant figure because any trailing zeroes before the decimal point do NOT count.

Best of Luck!

0.00005 seconds = 50 μs

Thank you

If you pull with a constant force of 400 N for 0.2 meters, then the work done will be equal to 80 J.

In physics, the word "work" involves the measurement of energy transfer that takes place when an item is moved over a range by an externally applied, at least a portion of which is applied within the direction of the displacement.

The length of the path is multiplied by the element of a force acting all along the path to calculate work if the force is constant. The work W is theoretically equivalent towards the force f times the length d, or W = fd, to portray this concept.

As per the given information in the question,

Force, f = 400 N

Displacement, d = 0.2 meters

\(Work done(W)=Force(f)*Displacement(d)\)

W = 400 × 0.2

W = 80 J.

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Answer:

VR = Velocity of effort / Velocity of Load

Explanation:

The ratio of the out-lever to the in-lever (length of the resistance arm to effort arm) is known as the velocity ratio (VR). It indicates that the distance covered by effort is four times that covered by the load.

The load-to-effort ratio of a machine, or alternatively, the output-to-input ratio of a machine, is known as its mechanical advantage. Another definition of velocity ratio is the ratio of the velocity of effort to the velocity of load.

When a machine has a force ratio of 4 and a velocity ratio of 4, this indicates that the weight moved is multiplied by 4 and the distance moved by the effort is multiplied by 4 at the same time.

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Answer:

Explanation:

find the system acceleration

F = ma

7g - 3g -3g = (7 + 3 + 3)a

1(9.8) = 13a

a = 9.8/13 m/s²

String tension must support weight and provide for acceleration.

F = ma

T₁ = 3(9.8 + 9.8/13)

T₁ = 31.7 N

Electric field strength at the mid point is 0 n/c.

diameter of the ring = 10 cm =0.1 m

Charge on each ring = 10nc

distance between the rings = 18 cm = 0.18 m

radius of ring = 0.5 m

Electric field strength for a ring with radius image and distance image from the center of the ring is

E = 1/4π∈0 ( xQ/ \(x^{2}\) +\(r^{2}\))^3/2)

for finding electric field at mid point

Charge on mid point is resultant of both left and right rings on that point. Electric field strength Contribution of left ring:

Distance from the left ring t the mid point is x = 0.18/2 = 0.09 m

By putting these values we can get magnitude of the left ring contribution at the center.

Since it is mid point, the contribution of the right ring will also be the same.

So, E = \(E_{left\) - \(E_{right\)

       = 0

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Answer:

approximately 6.67 m/s

Explanation:

the equation for speed when given momentum and mass is

Speed=momentum/mass

Answer:

Below

Explanation:

Momentum = m * v

 40              =   6 * v

40/6 = v = 6  2/3   m/s     ( or ~  6.7 m/s)