What do you ocean waves and sound waves have in common?

Using Figures A and B The magnitude and direction of buoyant force is 1.2N upward

Weight of object in water(F1 )= 25 N , Weight of object in air(F2) = 26.2 N

Direction and magnitude of buoyant force(FB)

We know that the spring balance measures the net normal force(N) acting on object.

In figure (B), the forces acting on object are,

Gravitational force acting in downward direction.

Tension acting in upward direction.

Hence the net force equation for object is,

Normal force = Gravitational force

Fg = F2 = 26.2 N ---(1)-

Therefore the weight(or gravitational force on object) of object is 26.2 N

Now in figure (A), the forces acting on object are,

Gravitational Force(Fg) acting in downward direction.

Normal force(F1) acting in upward direction.

Buoyant force (direction unknown)

Hence the net force equation for object is

Normal Force = Gravitational Force + Buoyant force

F1 = Fg + FB

FB = F1 - Fg = 25 - 26.2 = -1.2 N ----(2)--( negative sign indicates that the direction of buoyant force is                                                                                 opposite to the direction we considered earlier)

FB = 1.2 N (in upward direction)

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Spraying an asphalt road with water will make it easier to walk across and bare feet on a hot sunny day because it has a high specific heat capacity.

This is referred to as the amount of heat which is required to raise the temperature of the unit mass of a given substance by a given amount.

Water as a compound has a very high specific heat capacity which means that it needs a high amount of heat for the temperature to change. This therefore means that when the water is sprayed on the surface, the road doesn't become too hot and can be walked on with the barefoot which makes it the correct reason.

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Answer:

4

Explanation:

you have to divide the velocity by time so 40 divided by 10 and the answer should be 4

Answer:

Its acceleration is 4 m/s^2.

(a) To find the speed of the water leaving the end of the hose, we can use the equation Q = Av, where Q is the volumetric flow rate, A is the cross-sectional area of the hose, and v is the velocity of the water.

Given that the diameter of the hose is 2.72 cm, we can calculate the radius as r = d/2 = 1.36 cm = 0.0136 m. The cross-sectional area of the hose is then A = πr^2.

The volume of water that fills the bucket in 1.20 min is 23.0 liters, which is equal to 0.023 m^3 (1 liter = 0.001 m^3). The time can be converted to seconds as 1.20 min = 72 s.

Substituting the values into the equation, we have Q = (0.023 m^3) / (72 s) = 0.000319 m^3/s.

To find the velocity v, we rearrange the equation to v = Q / A. Substituting the values, we get v = (0.000319 m^3/s) / (π(0.0136 m)^2) ≈ 1.287 m/s.

Therefore, the speed of the water leaving the end of the hose is approximately 1.287 m/s.

(b) If the nozzle diameter is one-third the diameter of the hose, then the radius of the nozzle is r_n = (1/3) * 0.0136 m = 0.00453 m.

The cross-sectional area of the nozzle is A_n = πr_n^2.

Using the same equation Q = Av, but now with the area of the nozzle, we have v_n = Q / A_n = (0.000319 m^3/s) / (π(0.00453 m)^2) ≈ 9.68 m/s.

Therefore, the speed of the water leaving the nozzle is approximately 9.68 m/s.

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Answer:

60.0m im sorry if im wrong but this is what i got

Explanation:

Answer:

The Answer Is 60 m

Explanation:

Distance d = ?

Time t = 15 s

Average speed vavg = 4.0 m/s

You can rearrange the equation vavg = d/t to solve for distance travelled d.

vavg = d/t

d = vavgt

= (4.0 m/s) (15s)

= 60 m

Answer:

because  of the mass so that would help

Explanation:

The intended receiver did not receive the ball since the ball travelled a shorter distance.

The time of motion of the ball is calculated by applying the following formula as shown below.

h = vt + ¹/₂gt²

where;

1.3 = ( 15.2 x sin40 )t  +   ¹/₂ ( 9.8 )(t²)

1.3 = 9.8t  +  4.9t²

4.9t² + 9.8t - 1.3 = 0

solve the quadratic equation suing formula method;

t = 0.13 second

The horizontal distance of the ball is calculated as;

d = Vₓt

d = ( 15.2 x cos 40) x 0.13

d = 1.51 m

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Part A: The magnitude of the induced emf in the coil as a function of time is given by ε = 7.93 × 10-3 V + (2.08 × 10-4 V/s³)t³.

Part B: The current in the resistor at time t = 4.70 s is 3.93 × 10-5 A.

Induced emf, ε = - N( dφ/ dt) The change in  glamorous  flux, dφ/ dt =  B( dA/ dt), where A is the coil's area in the  glamorous field.The area of the coil in the  glamorous  field is A =  r2 at any point in time.  
Because the coil's aeroplane is  vertical to the  glamorous  field, the angle between the  glamorous  field and the coil's aeroplane is 90 °.  

Thus, dA/ dt =  0.

Substituting d/ dt and B into the equation for  convinced emf yields = - N( d/ dt) = - N( BdA/ dt) = - Nr2( dB/ dt), where N is the number of turns in the coil and r is the compass of the coil.   Substituting the values given for N and r into the below equation yields:

ε = -( 470)( π)(0.0375 m) 2((1.20 × 10- 2 T/ s)(2.50 × 10- 5 T/ s4)( 4t3))

  = 7.93 × 10- 3 V(2.08 × 10- 4 V/ s3) t ³.

Thus, the magnitude of the  convinced emf in the coil as a function of time is given by

ε = 7.93 × 10- 3 V(2.08 × 10- 4 V/ s ³) t ³.  

Part B Ohm's law gives the current in the resistor at time t = 4.70 s as I = /R.

Substituting I = (2.49 10- 2 V5.19 10- 5 V/ s3(4.70 s) 3)/ 520

                      = 3.93 10- 5 A( to three significant  numbers)

for the value of at t = 4.70 s( as determined in  element A).

As a result, at time t = 4.70 s, the current in the resistor is 3.93 x 10^-5A.

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The body's response to a cold involves various immune cells and processes. Here is a simplified flow chart depicting the step-by-step response:

This flow chart demonstrates the coordinated response of B cells, helper T cells, macrophages, mucus production, lymph, cytokines, receptor proteins, antibodies, memory cells, and plasma cells in combating a cold virus and eventually eliminating it from the body.

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The new orbital speed after friction from the earth's upper atmosphere is 8674.15 m/s.

When the work done by a force does not depend on the choice of path, the force is called the conservative force. Some examples are a gravitational force, elastic spring force and electric force. On the other hand, when the work done by a force relies on the choice of the path of the motion, it is called non-conservative force.

The net work done by non-conservative force is W = ΔK + ΔP ----(1)

Given that, work done W = -7.5 * 10⁹ J

Change in kinetic energy = (Kf - Ki)

Final kinetic energy Kf = 1/2* m * Vf²

Initial kinetic energy Ki = 1/2* m * Vi²

Mass of the satellite m = 848 kg

Vf = Final speed

Vi = Initial speed = 9640 m/s

Change in gravitational potential energy ΔP = 0

Substituting the values in (1),

1/2* m (Vf² - Vi²) = W

1/2 * 848( Vf² -9640²) = W

Making Vf as subject,

Vf = √( 2W/m + Vi²)

⇒ √( -2* 7.5 * 10⁹/848 + 9640²)

⇒ 8674.15 m/s

Thus, the final speed decreases due to friction.

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Answer:

at 2.5m

Explanation:

because 2.5m*4m is 10.0=10

To solve this, we must know each and every concept related to speed of efflux and its calculations. Therefore,  hole at 3m will have the greatest speed of efflux.

The velocity of outflow is the speed with which a liquid emerges from a hole cut at a certain height from bottom of the container within which the liquid is contained.

Mathematically, the formula for speed of efflux can be given as

speed of efflux =√2×g×h

g= acceleration due to gravity

h1=4- 1 =3m

h2=4-2=2m

h3=4-2.5=1.5m

h4=4-1.5=2.5

Since speed of efflux is directly proportional to height. More the vale of h more will be speed of efflux. So on calculations, hole at 3m will have the greatest speed of efflux.

Therefore,  hole at 3m will have the greatest speed of efflux.

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Answer:

Economic Development is the creation of wealth from which community benefits are realized. It is more than a jobs program, it's an investment in growing your economy and enhancing the prosperity and quality of life for all residents. Economic development means different things to different people.

Answer:

H = 1/2 g t^2      no original vertical velocity

t = (2 * 2000 / 9.8)^1/2 = 20.2 s

Sx = 100 m/s * 20.2 s = 2020 m

A rescue pilot drops a survival kit while the plane is flying at an altitude of 2000 m then the distance travelled by the package after the drop will be 2020 meters.

A force that prevents two solid objects from smoothly sliding or rolling over one another is known as friction. While frictional forces, such as the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion. To overcome frictional forces in the moving parts, automotive engines use about 20% of their total power.

The main contributor to friction between metals appears to be adhesion, or the forces of attraction, between the contact regions of the surfaces, which are always microscopically uneven.

According to the question,

H = 1/2 g t²      

2000 = 1/2(9.8) t²

t² = 4000/ 9.8

t = 20.2 seconds.

So the distance travelled by the package will be :

Distance = s × t

Distance = 100 m/s × 20.2 s

Distance = 2020 meters.

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the transverse Wave which is Answer:2

Answer:

1

Explanation:

amplitude is the maximum distance from the rest of the particles. amplitude is thus measured from the rest position to the peak of a crest or of a trough.

as seen below, graph 1 has an amplitude of 1 while both graph 2 and 3 has an amplitude of 2.

Answer:

true

Explanation:

is an important component of physical fitness and has many positive effects on the body

Answer:

It's True

Developing flexibility helps yourself:

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0.29 m/s is the speed of this wave.

How can we determine a wave's speed?

Given: The wave's traveling wavelength is () = 35 cm

The wave's period (t) is 1.2 seconds.

The wave's frequency is 0.833 Hz.

We must ascertain a wave's wave speed.

Formula for wave speed is 35 x 0.833 (wavelength x frequency).

= 29.167 cm/sec

= 0.29 m/sec

As a result, the wave's speed is 0.29 m/s.

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The magnitude of the electric force on one of the masses is approximately 4.95 × 10^-4 N. the initial acceleration of the mass when it is released and allowed to move is approximately 3.30 × 10^-4 m/s^2.

To find the magnitude of the electric force between the two masses, we can use Coulomb's law:

Electric force (F) = k * |q1 * q2| / r^2

where k is the electrostatic constant (9 × 10^9 N m^2/C^2), q1 and q2 are the charges of the masses, and r is the distance between them.

Given:

Mass (m) = 1.5 kg

Charge (q) = 2.1 µC = 2.1 × 10^-6 C

Distance (r) = 1.7 m

(a) Magnitude of the electric force on one of the masses:

F = (9 × 10^9 N m^2/C^2) * |(2.1 × 10^-6 C) * (2.1 × 10^-6 C)| / (1.7 m)^2

F ≈ 4.95 × 10^-4 N

Therefore, the magnitude of the electric force on one of the masses is approximately 4.95 × 10^-4 N.

(b) To find the initial acceleration of the mass when it is released and allowed to move, we can use Newton's second law:

F = m * a

where F is the net force and a is the acceleration.

In this case, the only force acting on the mass is the electric force, so the net force is equal to the electric force. Therefore:

F = 4.95 × 10^-4 N (from part a)

Now we can substitute the values into the equation:

4.95 × 10^-4 N = (1.5 kg) * a

Solving for a:

a = (4.95 × 10^-4 N) / (1.5 kg)

a ≈ 3.30 × 10^-4 m/s^2

Therefore, the initial acceleration of the mass when it is released and allowed to move is approximately 3.30 × 10^-4 m/s^2.

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Answer:

Energy

Explanation:

Edge 2021

As part of his special theory of relativity, Einstein saw mass as a form of energy.

The theory of relativity as stated by Einstein stated that mass and energy are both interconvertible. This explains why energy is released when mass is lost.

Thus, as part of his special theory of relativity, Einstein saw mass as a form of energy.

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A cart moving at a constant speed of 25 m/s possesses 438 J of kinetic energy, and the mass of the car is 1.6 kg.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object to accelerate it. We must put in the effort to apply force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

Definition: When an object is moving at a constant speed—that is, its speed does not change—we say it is moving at a constant speed. steady rate

Given:

KE = 500 J

v = 25 m/s

The formula for Kinetic Energy is given:

KE = ½ mv²

where: KE - Kinetic Energy

m - mass

v - velocity

Substituting the value of KE and v in the formula,

500 J = (½)(m)(25 m/s)²

m = (500 J)(2)/(25 m/s)²

m = 1.6 kg

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The Productivity Index (PI) of the well is 2 psi/bbl per day. This indicates the efficiency of the well in delivering fluids from the reservoir to the wellbore.

The Productivity Index (PI) is a measure of the well's ability to deliver fluids from the reservoir to the wellbore. It is calculated by dividing the difference between the reservoir pressure and the flowing bottomhole pressure by the production rate. In this case, the reservoir pressure is given as 3,000 psi, and the flowing bottomhole pressure is measured at 2,990 psi. The production rate is 5 barrels per day.

For calculating the PI, use the formula:

PI = (Reservoir Pressure - Flowing Bottomhole Pressure) / Production Rate

Substituting the given values into the formula:

PI = (3,000 psi - 2,990 psi) / 5 bbls per day

Simplifying the equation:

PI = 10 psi / 5 bbls per day

PI = 2 psi/bbl per day

Therefore, the Productivity Index (PI) of the well is 2 psi/bbl per day. This indicates the efficiency of the well in delivering fluids from the reservoir to the wellbore.

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The velocity of the particle when it reaches the starting point = 70 m/s

For the first part of the motion

The initial velocity, u = 10 m/s

The final velocity v = 50 m/s

For the second part of the motion

The initial velocity, u = 50 m/s

Final velocity, v = 0 m/s

Add equations (1) and (2)

Taking the whole motion as a whole

Let the velocity of the particle when it reaches the starting point be vn

The velocity of the particle when it reaches the starting point = 70 m/s

Answer:

20m/s

Explanation:

Alex's acceleration is also Alex speed

a) The free length of the spring is 51.84 inches

b) The pitch of this spring 0.06 inches

c) The  force is needed to compress the spring to its solid length 277 lb.

d) The spring rate is 230.8 lb/in.

e)The spring buckle in service  758 lb

a) The solid height of the spring can be calculated using the formula:

\(Solid height = Total number of coils x Wire diameter\)

Solid height = 16 x 0.075 = 1.2 inches

The free length of the spring is the sum of the solid height and the length of wire used to make the 16 coils. The length of wire used to make 16 coils is given by:

Length of wire used = π x (Outside diameter + Wire diameter) x Number of coils

Length of wire used = π x (0.960 + 0.075) x 16 = 50.64 inches

Therefore, the free length of the spring is:

Free length = Solid height + Length of wire used

Free length = 1.2 + 50.64 = 51.84 inches

b) The pitch of the spring is the distance between successive coils. It can be calculated using the formula:

Pitch = Outside diameter / Total number of coils

Pitch = 0.960 / 16 = 0.06 inches

c) The force required to compress the spring to its solid length can be calculated using the formula:

\(Force = Spring rate x Distance compressed\)

The distance compressed is the solid height of the spring, which is 1.2 inches. The spring rate can be estimated using the formula:

Spring rate = Gd^4 / 8ND^3

where G is the modulus of rigidity of the material (given), d is the wire diameter, N is the total number of coils, and D is the mean coil diameter (outside diameter minus wire diameter).

Using the given values, we get:

Spring rate = 11.5 x 10^6 psi x 0.075^4 / (8 x 16 x 0.885 x 0.885^3)

Spring rate = 230.8 lb/in

Therefore, the force required to compress the spring to its solid length is:

Force = 230.8 lb/in x 1.2 in = 277 lb

d) The spring rate is 230.8 lb/in.

e) The critical buckling load of the spring can be estimated using the formula:

Critical buckling load = π^2EI / (KL)^2

where E is the modulus of elasticity of the material, I is the second moment of area of the cross-section, K is the effective length factor, and L is the length of the spring. The effective length factor depends on the end conditions of the spring, which are plain and ground in this case.

Assuming a conservative effective length factor of 0.8, we get:

Critical buckling load = π^2 x 30 x 10^6 x 0.000184^4 / (0.8 x 51.84)^2

Critical buckling load = 758 lb

Since the estimated compressive load is well below the critical buckling load, the spring is not expected to buckle in service.

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Answer:

d

Explanation:

Answer:

D: wire

Explanation:

Answer:

2m

Explanation:

The closer the objects are, the more gravitational force there is

To find the fundamental frequency of the pipe, we can use the relationship between the harmonic frequencies of a closed-open pipe. In a closed-open pipe, the fundamental frequency (f1) is equal to three times the third harmonic frequency (f3).

Given that the third harmonic frequency (f3) is 445 Hz, we can calculate the fundamental frequency (f1) as follows:

f1 = 3 * f3

f1 = 3 * 445 Hz

f1 = 1335 Hz

Therefore, the fundamental frequency of the pipe is 1335 Hz.

It's important to note that the properties of the mysterious gas, such as the bulk modulus and density, are not required to determine the fundamental frequency of the pipe based on the harmonic frequencies.

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If the predator in the Lotka-Volterra models feeds on several different prey items, the outcomes would likely be different compared to a scenario where it feeds on a single prey item.

In the Lotka-Volterra models, the interaction between predators and prey is typically represented by a set of differential equations. When a predator feeds on several different prey items, it introduces additional complexities to the model. Here are a few reasons why the outcomes would likely be different:

Prey Interactions: Different prey items may have different population dynamics and interactions with each other. Some prey may compete for resources, while others may have a mutually beneficial relationship. These interactions can affect the predator's ability to obtain food and impact the population dynamics of both the predator and prey species.

Predator Behavior: A predator feeding on multiple prey items may exhibit different foraging behaviors. It could switch between prey types based on availability or preference. This dynamic foraging behavior can influence the predation pressure on each prey species and lead to different population dynamics.

Resource Partitioning: When a predator consumes multiple prey items, there may be resource partitioning among the prey species. Each prey species may have different resource requirements, leading to variations in their population sizes and dynamics. This partitioning can create niche differentiation and affect the overall stability and dynamics of the predator-prey system.

Trophic Cascades: The presence of multiple prey items can introduce the possibility of trophic cascades, where changes in one prey population can indirectly affect the other prey species and subsequently impact the predator. For example, if the predator's primary prey becomes scarce, it may switch to another prey item, which could lead to population fluctuations and indirect effects throughout the ecosystem.

In summary, when the predator in the Lotka-Volterra models feeds on multiple prey items, the outcomes can be different due to complex prey interactions, predator behavior, resource partitioning, and the potential for trophic cascades. These additional factors introduce more variables and dynamics into the model, leading to different population sizes and interactions between the predator and prey species.

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The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets.

The scientific method is a process for acquiring knowledge that has been used to great success in understanding the physical world. It is based on the following steps:

1. **Observation:** The scientist observes a phenomenon and asks questions about it.

2. **Hypothesis:** The scientist proposes a hypothesis, or a possible explanation for the phenomenon.

3. **Experimentation:** The scientist designs experiments to test the hypothesis.

4. **Data analysis:** The scientist collects data from the experiments and analyzes it.

5. **Conclusion:** The scientist draws a conclusion about the hypothesis based on the data analysis.

The scientific method is an iterative process, meaning that the scientist may go back and forth between the different steps as needed.

Astrology, on the other hand, is a system of divination that attempts to predict future events by interpreting the positions of the stars and planets. Astrology is not based on the scientific method, and there is no evidence that it is a reliable way to predict the future.

The main advantage of the scientific method is that it is a systematic and objective way to acquire knowledge. The steps of the scientific method are designed to minimize bias and to ensure that the results of the experiments are repeatable. This makes the scientific method a reliable way to learn about the physical world.

Astrology, on the other hand, is based on subjective interpretations of the positions of the stars and planets. There is no scientific evidence to support the claims of astrology, and the results of astrological predictions are not repeatable.

In conclusion, the scientific method is a more reliable way to understand the physical world than astrology. The scientific method is based on a systematic and objective approach to acquiring knowledge, while astrology is based on subjective interpretations of the positions of the stars and planets.

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