A guitar string is plucked. What best describes the formation and transmission of the sound wave?

The string vibrates the surrounding air, which produces a transverse wave.
The string vibrates the surrounding air, which produces a longitudinal wave.
The string produces a longitudinal wave that travels without a medium.
The string produces a transverse wave that travels without a medium.

Answer:

La densidad del tetracloruro de carbono es 1.990 gramos por centímetro cúbico.

Explanation:

La masa de agua contenida dentro de la botella es igual a la diferencia entre la masa pesada totalmente llena y la masa pesada totalmente vacía, es decir:

\(m_{w} = 86.55\,g-24.25\,g\)

\(m_{w} = 62.3\,g\)

Ahora, de acuerdo con la definición de densidad, la masa es directamente proporcional a la densidad, entonces, podemos calcular la densidad del solvente mediante la siguiente relación:

\(\frac{m_{x}}{m_{w}} = \frac{\rho_{x}}{\rho_{w}}\) (1)

Donde:

\(m_{x}\) - Masa del tetracloruro de carbono, en gramos.

\(m_{w}\) - Masa del agua, en gramos.

\(\rho_{x}\) - Densidad del tetracloruro de carbono, en gramos por centímetro cúbico.

\(\rho_{w}\) - Densidad del agua, en gramos por centímetro cúbico.

Si sabemos que \(m_{x} = 123.95\,g\), \(m_{w} = 62.3\,g\) y \(\rho_{w} = 1\,\frac{g}{cm^{3}}\), entonces la densidad del tetracloruro de carbono es:

\(\rho_{x} = \left(\frac{m_{x}}{m_{w}} \right)\cdot \rho_{w}\)

\(\rho_{x} = 1.990\,\frac{g}{cm^{3}}\)

La densidad del tetracloruro de carbono es 1.990 gramos por centímetro cúbico.

Answer:

Stroke has two emissions it could either be the meaning of lightly passing over something with the sense of touch for example stroking a dog/cat

And the medical term stroke where either a person has lost facial features of can't lift their arms up and keep them up or speak properly and their speech would be slurred

Hope this helps

If anything didn't meet your question please comment what you are looking for and I may change my answer thank you :)

Explanation:

Answer:

it’s an example of a generator.

Explanation:

Answer:

Generator

Explanation:

valid

Answer: 4 s

Explanation:

Given

The applied force is 70 N

mass of the rock is 28 kg

initial velocity \(u=25\ m/s\)

final velocity \(v=15\ m/s\)

Deceleration provided by force is

\(a=-\dfrac{70}{28}=-2.5\ m/s^2\)

using the equation of motion

\(v=u+at\\\Rightarrow 15=25-2.5t\\\Rightarrow 2.5t=10\\\Rightarrow t=4\ s\)

Answer:

23 cm from the mirror

Explanation:

The per unit inductance of the 400 induction motor can be calculated using the given information, such as the rated speed, nameplate values, and the no-load current.

To find the per unit inductance of the motor, we can use the following expression:

Xpu =\(\frac{(Vpu - (Rpu * Cos thetapu))}{lpu * sin theta pu}\)

Where:

Xpu is the per unit reactance

Vpu is the per unit voltage

Rpu is the per unit resistance

θpu is the per unit power factor angle

Ipu is the per unit current

Given that the motor operates at 50 Hz, we can calculate the rated synchronous speed (Ns) using the formula:

Ns = \(\frac{120 f}{P}\)

Where:

Ns is the synchronous speed in RPM

f is the frequency in Hz (50 Hz in this case)

P is the number of poles (4 poles in this case)

Substituting the given values, we get:

Ns = \(\frac{(120 *50)}{4}\) = 1500 RPM

Since the rated speed of the motor is 1485 RPM, we can calculate the slip (s) using the formula:

s = \(\frac{(Ns-Nr)}{Ns}\)

Where:

Nr is the rated speed (1485 RPM in this case)

Substituting the values, we get:

s = \(\frac{(1500-1485)}{1500}\) = 0.01

Now we can calculate the per unit reactance (Xpu):

Xpu = \(\frac{(Vpu - (Rpu * Cos thetapu))}{lpu * sin theta pu}\)

Given:

Rated power (PN) = 200 kW

Rated voltage (Vn) = Vpu × Vrated

Rated current (In) = Ipu × Irated

Rated power factor (cosN) = cosθpu

Rated speed (Nr) = 1485 RPM

Using the given values, we can calculate the rated voltage and current:

Vrated = √3 * Vn

Irated = √3 * In

Substituting the values, we get:

Vrated = √3 * Vpu * Vn

Irated = √3 * Ipu * In

Now we can calculate Xpu:

Xpu = \(\frac{(Vpu - (Rpu * Cos thetapu))}{lpu * sin theta pu}\)

Given that the rated speed (Nr) is the synchronous speed multiplied by (1 - s), we can calculate the synchronous speed (Ns) using the formula above and then calculate the slip (s).

After obtaining s, we can substitute the given values and calculate Xpu.

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do your work own bro its your question

Answer:

The molar mass of a compound tells you the mass of one mole of that substance. In other words, it tells you the number of grams per mole of a compound.

Answer:

6.86 N

Explanation:

Applying,

F = mg............... Equation 1

Where F = Force exerted by gravity on the mass, m = mass, g = acceleration due to gravity

Note: The Force exerted by gravity on the mass is thesame as the weight of the body.

From the question,

Given: m = 700 g = (700/1000) = 0.7 kg

Constant: g = 9.8 m/s²

Substitute these values into equation 1

F = 9.8(0.7)

F = 6.86 N

The  vector diagrams that show  a vibration when the mass is at equilibrium, when it is at its highest point, and when it is at its lowest point are attached in the picture.

Spring constant  is of a property spring which is defined as the ratio of the force affecting the spring to the displacement caused by it. SI unit of spring constant is Newton per meter (N/m).

When a spring is vibrating under gravitational force, a  spring force comes to play as restoring force. As a result of both forces the spring vibrates about its equilibrium.

The  vector diagrams that show the gravitational force (mg), the spring force, and the net force during a vibration when the mass is at equilibrium, when it is at its highest point, and when it is at its lowest point are attached in the picture.

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Answer:

La presión que los patinadores ejercen sobre el hielo es 7,848,000 Pa

Explanation:

Los parámetros dados de los patinadores en la pala son;

La longitud de la hoja en el patín, l = 30 cm = 0.03 m

El espesor de la hoja, t = 5 mm = 0,005 m

El peso de las dos personas, m = 120 kg

Suponiendo que la sección transversal de la cuchilla sobre el hielo es rectangular, tenemos;

A = l × t

∴ A = 0,03 m × 0,005 m = 0,00015 m²

La fuerza de peso de los dos patinadores, W = m × g

Dónde;

g = La aceleración debida a la gravedad ≈ 9,81 m / s²

m = La masa de los dos patinadores = 120 kg

∴ W = 120 kg × 9,81 m / s² = 1,177,2 N

Presión, P = Fuerza, F/(Área, A)

∴ P = (1.177,2 N) / (0.00015 m²)= 7,848,000 Pascals

La presión que los patinadores ejercen sobre el hielo., P = 7,848,000 Pascals

Answer:

What shape is it? the formula is different depending on the shaping

Explanation:

Square P=4s

Rectangle P=2L+2W

Triangle a+b+c

Circle     P=C=2πr=πd

and so on

Answer:

It is an object that remains a magnet forever.

Explanation:

Answer:

A

kinetic energy=(mv²)/2

(1/2)(mv²)

(mv²)*0.5

where m=mass and v=velocity/speed

Answer:

density = mass/volume

density=0.8

volume=36

mass=?

0.8=mass/36

mass = 36x0.8=28.8g

Explanation:

because the acceleration is negative, this indicates a deceleration (or slowing down) . Hence we can say that:

The car is decelerating (slowing down), i.e its velocity is decreasing, at a constant rate of 5m/s².

Answer:

g = 1.25m/s²

Explanation:

Given the following data;

Mass = 5kg

Height = 6m

Gravitational potential energy = 24J

To find the acceleration due to gravity;

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

GPE = mgh

Substituting into the equation, we have;

24 = 5*6*g

24 = 30g

g = 30/24

g = 1.25m/s²

Therefore, the acceleration due to gravity on Planet X is 1.25m/s².

Answer:

g=0.8m/s^2

Explanation:

M=5kg

h=6m

GPE=24J

GPE=Mgh

g=GPE/Mh

g=24J/(5kg)(6m)=0.8

g=0.8m/s^2

Answer:

Q1. a

Q2. a

Explanation:

mass is not a vector quantity and west i 90 degrees more than south

Explanation:

Answer:

wavelength is equal to speed over frequency

A boat in the trough of a wave takes 3 seconds to reach the highest peak of the wave, then its wavelength will be equal to 30 m.

The frequency of an event is its repetition per time unit. In a contrast to spatial frequency, it is also often referred to as temporal frequency, and in a contrast to angular frequency, it's often referred to as conventional frequency.

The standard unit is hertz (Hz), which is equal to one per second. The reciprocal of frequency is period, which itself is defined as the amount of time for one cycle of a repeating occurrence.

From the given data in the question,

Total time, t = 3s + 3s

t = 6 seconds.

Frequency, f = 1/6s

f = 0.1666 Hz

Now, let's find out the wavelength,

λ = υ/f

= 5/0.1666

λ = 30 m.

Therefore, the wavelength will be equal to 30 m.  

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The ideal steam engine efficiency is at its most optimistic limit.

A power generation plant is a structure created to create electricity from another source of energy, such as heat energy (thermal energy) produced from coal and other fossil fuels.

Efficiency. The steam's high and low temperatures can be used to determine this: ec = Th - T c /Th =1 Tc /Th

The engine will operate most effectively when both the low and high temperatures are exceptionally high. The temperature and pressure of the environment, however, are restricted in how much the steam can expand and how low the lower temperature can be because the electric power plant is normally located on the Earth's surface. Therefore, increasing the temperature of the system is the only option to further boost the efficiency.

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The level of flexibility will affect my performances in football. Football

requires some level of flexibility to do certain things.

Flexibility will enable me change speed and direction easily when there is a

counter attack by the opponents. It will also assist in using some techniques

such as adding more curve on the football with the feet in order to score

goals.

Flexibility will also ensure that there will be lesser injury concerns because there will be less sprains or other muscle related injuries.

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1. Common to both Asia and Central America, jade is known for its ice-cold touch and translucent beauty.

2. The ancient technique of forging involves shaping metal by hammer blows.

3. Made from the teeth and tusks of large mammals, most often elephants, ivory is very rare to come by today.

4. Originally an Asian invention, lacquer is traditionally made from tree sap, which hardens into a smooth, glasslike coating.

5. Native American basket weavers often incorporated a small, barely noticeable imperfection, called dau, into their works to let spirits enter and exit.

Jade, a term commonly associated with Asia and Central America, is prized for its unique characteristics of being cold to the touch and having a translucent beauty.

The ancient technique of forging involves shaping metal through hammer blows, allowing artisans to create intricate and durable objects.

Ivory, which comes from the teeth and tusks of large mammals like elephants, has become increasingly rare and difficult to obtain in modern times due to conservation efforts.

Lacquer, originally invented in Asia, is made by collecting tree sap and applying it in layers that harden into a smooth and glossy finish. Native American basket weavers incorporated a subtle imperfection called dau into their works, believing it served as a portal for spirits to enter and exit the baskets, adding a spiritual element to their creations.

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The greatest height reached by the ball is given by A(z) and the horizontal distance to the thrower's feet at this point is denoted as D.

The height from which the ball was thrown is represented as H. The horizontal distance to the thrower when the ball hits the ground is denoted as Dg.

The greatest height reached by the ball is A(z), and the horizontal distance to the thrower's feet at this point is D. The ball was thrown from a height of H.

The horizontal distance to the thrower when the ball hits the ground is Dg.

To find the greatest height reached by the ball, we need to analyze the function A(z). The horizontal distance D to the thrower's feet at this point can be determined by considering the horizontal component of the ball's motion.

To calculate the height from which the ball was thrown, we can use the initial condition or other given information.

Finally, to determine the horizontal distance Dg when the ball hits the ground, we need to analyze the ball's trajectory and identify the point at which its height becomes zero.

These calculations involve analyzing the ball's motion in both the horizontal and vertical dimensions, incorporating factors such as initial velocity, angle of projection, and gravitational acceleration.

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50 V to dissipate a power of 10 W

A resistor dissipates 2.00 W when the rms voltage of the emf is 10.0 V.

\($\mathrm{V}_{r m s}=\mathrm{P}$\)

10 v provides 2 W of power whereas V provides 10 W of power.

10 V = 2 W

x V=10 W

By using cross multiplication

2 x = 100

x = 50 V

So, 50 V to dissipate a power of 10 W

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Answer:

A.) 18 m/s

B.) 12 m/s

Explanation:

Given that a school bus moves at 15 m/s relative to an outside observer. If a student walks toward the front of the bus at 3 m/s relative to the bus, how fast is the student moving relative to the observer ?

Since the student direction is in the direction of the bus, the student velocity relative to the bus velocity will be:

15 + 3 = 18 m/s

Therefore, the observer will see the student moving very fast at a speed of 18 m/s

 If the same student turns around and walks to the back of the bus at 3 m/s, the student will be moving in an opposite direction. The relative velocity of the student to the observer will be 15 - 3 = 12 m/s

Therefore, the observe will see the student moving very fast at a speed of 12 m/s

Answer:

b d c a

Explanation:

Answer: The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg.

Explanation:

The new velocity of the electron is √2v ( option B)

Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy. For example, kinetic energy can be found in : a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field.

Kinetic energy = 1/2mv2

This means K E is directly proportional to the square of the velocity.

This means that if velocity is doubled, The K.E will be 4 times the original.

similarly if the Kinetic Energy is double the new velocity will be √2 of the original velocity.

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