A harmonic wave travels in a wire with amplitude 2.51 mm, wavelength 1.09 m, and frequency 649 hz. what is the speed with which the wave travels

Answer:

\(\boxed{V_{i} = 5\ m/s}\)

Explanation:

Given:

Acceleration = a = 0.75 m/s²

Time = t = ?

Final Velocity = \(V_{f}\) = 72 km/hr = 20 m/s

Required:

Initial Velocity = \(V_{i}\) = ?

Formula:

a = \(\frac{V_{f}-V_{i}}{t}\)

Solution:

For  \(V_{i}\)  the formula becomes:

\(V_{i} = V_{f}-at\)

\(V_{i}\)  = 20 - (0.75)(20)

\(V_{i}\)  = 20 - 15

\(V_{i}\)  = 5 m/s

In Case: If you want it in km/hr:

\(V_{i}\)  = 5 * 3.6

\(V_{i}\)  = 18 km/hr

Answer:

5 m/s

Explanation:

acceleration = 0.75 m/s²

time = 20 s

final velocity = 72 km/h = 20 m/s

initial velocity = ?

Apply formula for initial velocity.

\(u=-at+v\)

\(\sf a=acceleration\\t=time\\v=final \: velocity\\u=initial \: velocity\)

Solve for u.

\(u=-(0.75)(20)+ 20\)

\(u=-15+20\)

\(u= 5\)

The steady- state value of the angle theta if a) the steady-state value of the angle θ will be 0° in this case, b) the steady-state value of the angle θ in this case will be 90°.

Angle is a geometric concept that describes the relationship between two lines or planes intersecting at a common point. It is measured in degrees and is used in mathematics to define the size, shape, and orientation of objects in space.

a) For a=0: The steady-state value of the angle θ will be 0° in this case. This is because there is no external force (a) acting on the bar, so it will remain in its equilibrium position.

b) For a=g/2: The steady-state value of the angle θ in this case will be 90°. This is because the external force (a) acting on the bar is equal to half of the gravitational force (g) so the bar will pivot and come to a rest in a vertical position.

The value of a for which the steady-state value of theta will be zero is a=0. This is because when there is no external force (a) acting on the bar, it will remain in its equilibrium position.

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Given:

Pressure, P = 300 kPa

Volume, V = 100 cm³

Temperature, T = 30°C

Let's fin the pressure of the gas inside the container if it is heated to 100°C.

Apply the Gay-Lussac's law:

Where:

P1 = 300 kPa

T1 = 30 + 273 = 303 K

T2 = 100 + 273 = 373 K

V1 = V2 (since the container is sealed).

Let's solve for P2.

Rewrite the formula for P2:

Therefore, the pressure if the container is heated to 100°C is 369.31 kPa.

ANSWER:

369.31 kPa

Answer:

\(\boxed{\sf Time \ being \ in \ which \ body \ remains \ in \ air = 4 \ s}\)

Given:

Velocity (u) = 20 m/s

Acceleration due to gravity (g) = 10 \(\sf m/s^2\)

To Find:

Time (t) being in which body remains in air.

Explanation:

Formula:

\(\boxed{\bold{\sf t=\frac{2u}{g}}}\)

Substituting values of u & g in the equation:

\(\sf \implies t = \frac{2 \times 20}{10}\)

\(\sf \implies t =\frac{40}{10}\)

\(\sf \implies t =\frac{4 \times \cancel{10}}{ \cancel{10}}\)

\(\sf \implies t = 4 \ s\)

\(\therefore\)

Time (t) being in which body remains in air = 4 seconds

Answer:

the same as the initial launch velocity (7.59 m/s)

Explanation:

vf^2 = vi^2 + 2ad

d = displacement = 0, so vf^2 = vi^2, so vf = vi = 7.59m/s

(a) The free body diagram for representing all the forces acting on an object.

(b) The force Mr. Seifert is applying to the box to move it forward to the RIGHT is 105 N.

A free body diagram is a graphical illustration of all the forces acting on an object.

The force applied by Mr Seifert is calculated by applying Newton's second law of motion as follows;

F - Ff = ma

where;

The given parameters include;

mass of the cardboard = 40 kg

force of friction = 25 N

acceleration of the cardboard = 2 m/s²

The force applied by Mr Seifert is calculated as follows;

F = Ff + ma

F = 25 N  +    (40 kg x 2 m/s²)

F = 105 N

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The universal gas constant, R, is a constant used in many calculations in physics and chemistry, including the calculation of osmotic pressure. Its value is 8.314 J/mol•K (joules per mole Kelvin).

However, to calculate the osmotic pressure of seawater, additional factors such as the concentration of solutes and temperature must also be taken into account.

The osmotic pressure of seawater is typically calculated using the van 't Hoff equation, which relates the osmotic pressure to the concentration of solutes, temperature, and the gas constant.

So, while the universal gas constant is an important factor in calculating osmotic pressure, it is not the only factor and must be used in conjunction with other variables.

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The equilibrium position is the undisturbed state of a medium, displacement is the change in position of a particle due to the wave, and amplitude is the maximum displacement of a particle from its equilibrium position, indicating the energy carried by the wave.

The equilibrium position, displacement, and amplitude are essential terms related to wave motion. Let's define each term as it relates to a wave:

1. Equilibrium position: The equilibrium position is the undisturbed or rest position of a medium or a particle when no wave is passing through it. In other words, it is the point at which the medium is not experiencing any net force, and no energy is being transmitted through it. When a wave propagates through the medium, the particles oscillate about this equilibrium position.

2. Displacement: Displacement refers to the change in the position of a particle in a medium as it oscillates due to the wave passing through it. It is the distance between the current position of the particle and its equilibrium position. Displacement can be measured both horizontally and vertically, depending on the type of wave (transverse or longitudinal).

3. Amplitude: Amplitude is the maximum displacement of a particle from its equilibrium position as it oscillates due to the wave passing through it. It is a measure of the wave's energy, as a wave with a larger amplitude carries more energy than a wave with a smaller amplitude. The amplitude can be observed as the height of a crest or the depth of a trough in a transverse wave, or as the maximum compression or rarefaction in a longitudinal wave.

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The physical pendulum consists of a meter stick that is pivoted at a small hole drilled through the stick a distance 0.056mfrom the 50 cm mark

The period of a physical pendulum is given by T = 2π √(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. We can use this formula to find the distance d.

To find d, we use the formula:

T = 2π √(L/g)

Where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

We know that T = 2.5 s, g = 9.8 \(m/s^2\) and L is the distance from the pivot point to the center of gravity of the pendulum which is the 50 cm mark on the meter stick, so L = 0.5m.

We can rearrange the formula to solve for d :

d = L * √(\(T^2/4$\pi^2\) -1/g)

With the given values we can substitute in the formula

d = 0.5* √(\(2.5^2/4$\pi^2\) -1/9.8)

d = 0.056m

Therefore, The distance d from the 50cm mark is approximately 0.056m.

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Option D is the correct answer.

To demonstrate the hypothesis, the control experiment must be the nail with 8 coils.

A control experiment is the experiment that remains unchanged or unaffected by other variables.

A controlled experiment is simply an experiment in which all factors are held constant except for one: the independent variable.

For this given experiment, the number of paper clips lifted depends on the number of coils around the wire and voltage applied.

To demonstrate that for every 8 additional coils, you will be able to pick up two additional paper clips, we must have a control experiment, that is an experiment with which we will compare the out come.

This control experiment must be the nail with 8 coils.

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Answer:

True Edg2020

Explanation:

Answer: true

Explanation:

because I say so :P

Resistance  =  (voltage) divided by (current)

                                             =  (120 V)  /  (0.5 Amp)

                                             =          240 ohms .

The tail shape of a surfboard greatly affected the board's interaction with the wave's face and the flowing of water flowing.

The tail shape of a surfboard affects how the board depends on the wave's face, and the water flowing between it. More comprehensive, thicker tail shapes have more surface area and assist the board to float and create lift - allowing the surfboard to plane over the surface of the water more efficiently.

The shape of both the surfboard and its fin swap the way the water moves around it if you can grab a wave as well as the turning ability of the surfboard.

So we can conclude that Surfboard bottom outlines are also essential. Concave and V-shaped contours have similar performances, for all opposite designs.

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Lupus is a kind of disease in which the bodies immune system attacks its own cells.

We know that the immune system is the system that is in the body that is able to fight off the invaders that come into the body. As such, the immune system is the system that attacks any disease causing organism that comes into the body.

We know that foreign cells can be able to cause diseases in the body and they can be able to affect the balance of the cells that are in the body. Now, we can see that there are some circumstances in which the cells of the body begins to fight themselves.

This implies that the immune system of the body sees its own cells as the enemies and then begins to attack them and as such the person that has this condition is said to have an auto immune disorder.

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d = vi*t + 0.5*a*t. equation should you use to solve this problem

Speed is the overall distance an item travels in a given amount of time. It is solely based on the size of the moving item. Meter/second is the measurement of speed. A metre per second is the commonly used measurement of speed.

The following is the mathematical formula for speed:

speed equals entire distance / total time

As stated in the challenge, Superman is travelling at 54.5 m/s when he notices a train 850 metres away that is about to crash into a river. In 4.22 seconds, he arrives to the train.

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The automobile battery has the greater mass compared to a king-size pillow. Mass refers to the amount of matter present in an object and is usually measured in kilograms or grams. An automobile battery typically weighs around 20 to 30 pounds or approximately 9 to 14 kilograms, while a king-size pillow usually weighs around 2 to 3 pounds or approximately 1 to 1.5 kilograms.

The Mass is an important concept in physics as it plays a crucial role in determining an object's gravitational force, acceleration, and momentum. In this case, the automobile battery has a greater mass compared to the king-size pillow, which means that it will have a stronger gravitational force and will be more difficult to move or stop. This is why car batteries require specialized equipment to lift and handle, while pillows can be easily moved by hand. In summary, the answer to the question is that the automobile battery has the greater mass. It is important to note that both objects have mass, but the battery has a greater amount of matter present in it compared to the pillow.

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Answer:

When riding on a plane, passengers not only move through space but they move through time as well.

Explanation:

time is the answer

Explanation:

Answer:

that the earth isnt flat

Explanation:

The charge carried by the small sphere can be determined using Newton's second law and the given acceleration.

According to Newton's second law, the force acting on an object is equal to its mass multiplied by its acceleration. In this case, the electric field causes the sphere to acquire a horizontal acceleration of 13.0 m/s^2.

The force acting on the sphere can be calculated using the formula F = m * a, where F is the force, m is the mass, and a is the acceleration. Plugging in the values, we have F = (0.441 kg) * (13.0 m/s^2) = 5.733 N.

The electrostatic force experienced by the sphere is given by the equation F = q * E, where q is the charge and E is the electric field strength. Rearranging the equation, we can solve for the charge: q = F / E. Substituting the values, we get q = (5.733 N) / (5.00 N/C) = 1.147 C.

Therefore, the charge carried by the small sphere is 1.147 Coulombs.

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In alpha decay, the nucleus loses two protons, in beta decay, the nucleus either loses or gains a proton whereas in gamma decay, no change in proton number occurs only energy is released.

Alpha decay is a type of radioactive decay in which the nucleus of an atom emits an alpha particle which leads to transforming into a new atomic nucleus by losing two protons. During beta decay, the proton in the nucleus is transformed into a neutron and and neutron is transformed into proton while on the other hand, gamma decay is a type of decay in which nucleus changes from a higher energy state to a lower energy state due to the release of electromagnetic radiation.

So we can conclude that In alpha decay, the nucleus loses two protons, in beta decay, the nucleus either loses or gains a proton whereas in gamma decay, no change in proton number occurs only energy is released.

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Answer:

Position C

Explanation:

Position A has the highest amount of potential energy. At position C, most of that potential energy was transformed to kinetic energy. Because it is at the bottom part of the hill, and is beginning to reclimb, point C has the highest kinetic energy.

The energy of the body by the virtue of its motion is known as the kinetic energy of the body. At position C on the track would the cart have the most kinetic energy.

The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.

According to the law of conservation of energy can not be created nor be destroyed can be transferred from one form to another form.

The total energy is defined as the sum of kinetic energy and potential energy.

Total energy = kinetic energy+potential energy

Position A contains the most potential energy. The majority of that potential energy was converted to kinetic energy at location C.

Point C has the most kinetic energy since it is at the bottom of the slope and is starting to climb again.

Hence at position C on the track would the cart have the most kinetic energy.

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Answer:

A.) Most nonmetals are gaseous, but some are liquid or solid

Explanation:

Answer:

a

Explanation:

Electrons are emitted from the cathode with a range of velocities. This phenomenon can be explained by considering the energy distribution of electrons within the cathode material.

Electrons in a metal are in various energy states, which are influenced by factors such as temperature and the presence of an electric field.

When a potential difference is applied across a cathode and an anode, the electric field created between them can cause some electrons in the cathode to gain enough energy to overcome the work function, which is the minimum energy needed for an electron to be emitted from the surface of the metal. The energy of these emitted electrons varies due to their initial energy states and the amount of energy gained from the electric field.

Thermal energy can also play a role in electron emission. At higher temperatures, a greater number of electrons in the cathode have sufficient thermal energy to overcome the work function. These thermally emitted electrons will also exhibit a range of velocities depending on their initial energy states and the amount of thermal energy gained.

In summary, electrons are emitted from the cathode with a range of velocities due to the different energy states within the cathode material and the various energy sources, such as the electric field and thermal energy, that can contribute to overcoming the work function.

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Answer:

2=6

3=9

Explanation:

I think this is right I'm not sure but I have done problems like this and did based on what I remember.

The average acceleration of the 3 kg block is 4 m/s².

The given parameters;

According to Newton's third law of motion, action and reaction are equal and opposite.

The force exerted on both blocks are equal and opposite.

\(F = ma\\\\m_1 a_1 = m_2a_2\\\\a_2 = \frac{m_1 a_1}{m_2}\\\\a _2 = \frac{2\times 6}{3} \\\\a_2 = 4 \ m/s^2\)

Thus, the average acceleration of the 3 kg block is 4 m/s².

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Answer:

Density of the ship :133.33 kg/m³

Mass of the ship :50,000,000 kg

Ships are able to float on water because they displace a volume that equals  their own weight

Explanation:

The formula for density is ;

Density = Mass/Volume

But the mass of  displaced fluid is give by the formula;

m=ρV where ρ is density of the fluid and V is volume of water displaced

Volume of liner= 375000 m³

Volume displaced = 50000 m³

The volume of the water displaced is equal to mass of the liner

I m³ = 1000 kg

50000 m³ = 50000*1000 =50,000,000 kg

50,000,000 kg ----------mass of the ship

So if ;

m= 50,000,000 kg

v= 375000 m³

ρ = m/V

ρ = 50,000,000/375000

ρ = 50,000,000/375000

ρ =133.33 kg/m³

Ships are able to float on water because they displace a volume that equals  their own weight. Additionally, the air contained in the spaces of the ship inside is much less dense than density of water aiding in the floating process.

The trip takes a total of 1.5 hours and has an average speed of 40 mph.

To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.

For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.

For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.

To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.

To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.

Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.

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0.22068 J is the energy required to raise the current in the inductor. It is less than the maximum allowed energy in the inductor, so it is safe to raise the current from 1.4 A to 3.5 A.

The maximum allowable potential difference across a 240 mH inductor is 340 V. We need to raise the current through the inductor from 1.4 A to 3.5 A.Inductance, L = 240 mH = 0.24 H

Maximum allowable potential difference, V = 340 V

Initial current, I₁ = 1.4 A

Final current, I₂ = 3.5 A

The formula for calculating the change in current is given as;

ΔI = I₂ - I₁

ΔI = 3.5 A - 1.4 A

ΔI = 2.1 A

The formula for calculating the maximum allowed energy in an inductor is given by;

Emax = 1/2 × L × I₂²

Emax = 1/2 × 0.24 H × (3.5 A)²

Emax = 0.735 JThe formula for calculating the energy in an inductor is given by;

E = 1/2 × L × I₁²E = 1/2 × 0.24 H × (1.4 A)²E = 0.1176 J

The formula for calculating the energy required to raise the current in the inductor is given by;

E = 1/2 × L × ΔI²

E = 1/2 × 0.24 H × (2.1 A)²

E = 0.22068 J

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The resistance of the circuit should be 55.44 Ω to raise the current through the inductor from 1.4 A to 3.5 A. Given information: The maximum allowable potential difference across a 240 mH inductor is 340 V.

The current through the inductor is initially 1.4 A. The final current through the inductor is 3.5 A. Inductive reactance can be given as: Xl = 2πfL Where, Xl is inductive reactance, f is the frequency, L is the inductance of the inductor. Here, the frequency is not given. So, let's assume the frequency is 50 Hz.Xl = 2π × 50 × 0.240H = 75.398 ΩImpedance can be given as: Z = √(R² + Xl²)

Initially, the current through the inductor is 1.4 A. The impedance can be given as:Z = 340/1.4Z = 242.85 ΩLet the final impedance of the circuit be Z'. Final current through the inductor is 3.5 A.Z' = V/I = 340/3.5Z' = 97.14 ΩLet the resistance of the circuit be R'.R'² = Z'² - Xl²R'² = (97.14)² - (75.398)²R' = 55.44 ΩSo, the resistance of the circuit should be 55.44 Ω to raise the current through the inductor from 1.4 A to 3.5 A.

Therefore, the resistance of the circuit should be 55.44 Ω to raise the current through the inductor from 1.4 A to 3.5 A.

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(a) Take into account that the centrifugal force experienced by each car is given by:

where v1 and v2 are the speed of both cars and R1 and R2 are the radius of the curve traveled by each car, m is the mass of the cars.

If you solve for m, you obtain:

due to the masses of the cars are identical, you have:

(b) Now, consider that:

R1 = 2R

v1 = v

R2 = 6R

v2 = 3v

Now, divide the equation for F1 over the equation for F2, replace the previous expressions for the parameters and simplify for F1:

Answer: incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the light in the broad bands near specific wavelengths.

Explanation:

Incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the light in the broad bands near specific wavelengths.

Incandescent light bulbs emit generally continuous thermal spectra. CFLs and LEDs emit the emission line spectra with specific wavelengths.

Incandescent light bulbs emit absorption spectra similar to the spectra of stars. CFLs and LEDs emit the emission line spectra with specific wavelengths.