Solved for niobium, c11 = 242 gn/m2, c12 = 129 gn/m2, and c44 = 28 gn/m2.

Answer:

531.65 m

Explanation:

Let d₁ be the distance between the hunter and the closer cliff and d₂ be the distance between the hunter and the farther cliff. The speed of sound v = 343 m/s.

t₁ is the time taken for the sound to reach the neared cliff and return back to the hunter as echo. Hence:

t₁ = 2d₁/343

t₂ is the time taken for the sound to reach the farther cliff and return back to the hunter as echo. Hence:

t₂ = 2d₂/343

t₂ - t₁ = 2.1

2d₂/343 - 2d₁/343 = 2.1

d₂ - d₁ = 360.15        (2)

t₃ is the time taken by the third echo as a result of the second echo reaching the nearer cliff. Hence:

t₃ = 2d₁/343

0.5 = 2d₁/343

d₁ = 85.75 m

d₂ - d₁ = 360.15

d₂ - 85.75 = 360.15

d₂ = 445.9 m

The distance between the two cliffs = d₁ + d₂ = 445.9 + 85.75 = 531.65 m

Answer:

I think 1. is 17 and 2. is 600

Explanation:

sorry its been a while..

Answer:

Explanation:

To find:-

Answer:-

We are here given that , the speed of a wave is 350m/s and has a frequency of 140Hz . We are interested in finding out the wavelength of the wavelength of the wave .

As we know that, wavelength, frequency and speed are related to each other as ,

\(\longrightarrow\boxed{ v = \lambda \nu} \\\)

where,

On substituting the respective values, we have;

\(\longrightarrow 350 m/s = \lambda \times 140Hz \\\)

\(\longrightarrow \lambda =\dfrac{350}{140} m \\\)

\(\longrightarrow \boxed{\boldsymbol \lambda = 2.5 \ m} \\\)

Hence the wavelength of the wave is 2.5 m .

Answer:

2.5meter

Explanation:

edge 2023

Answer:

The charge of a current in a given period of time is calculated by multiplying the current and the duration of that current. Since in the problem charge would be constant, we can relate the first conditions to the second conditions.

q = IT

q1 = q2

I1T1 = I2T2

8.4(240)=(10.5)(T2)

T2 = 192 seconds

Answer:

0.969 s  (3 s.f.)

Explanation:

Constant Acceleration Equations (SUVAT)

\(\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}\)

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

Acceleration due to gravity:  g = 9.8 ms⁻²

Resolving vertically, taking up as positive:

\(\begin{aligned}\textsf{Using} \quad v&=u+at:\\\\0&=9.5+(-9.8)t\\-9.5&=-9.8t\\t&=\dfrac{-9.5}{-9.8}\\t&=0.9693877551\\\implies t&=0.969\; \sf s\;(3\:s.f.)\end{aligned}\)

Therefore, it takes 0.969 s (3 s.f.) for the tennis ball to teach the top of its trajectory.

The pressure in a 0.5 m^3 vessel charged with 10 kg of carbon dioxide at 30°C can be calculated using the ideal gas law.

The ideal gas law states that the pressure (P), volume (V), number of moles (n), and temperature (T) of an ideal gas are related by the equation PV = nRT, where R is the gas constant. To calculate the pressure in the vessel, we need to know the number of moles of carbon dioxide, the volume of the vessel, and the temperature.

First, we can convert the mass of carbon dioxide (10 kg) to moles using its molar mass (44 g/mol):

n = 10 kg / (44 g/mol) = 0.227 moles

Next, we can calculate the pressure in the vessel using the ideal gas law:

P = (nRT) / V = (0.227 moles * 8.31 J/(mol*K) * (303 K)) / (0.5 m^3) =~ 59.3 atm

To learn more about pressure, visit:

https://brainly.com/question/12971272#

#SPJ11

The actual momentum of the bus compare with the momentum it would have if classical mechanics were valid due to the fundamental differences between quantum mechanics and classical mechanics.

According to quantum mechanics, particles can exhibit wave-like behavior. When particles have wavelengths that are comparable to the size of objects, they are said to be delocalized, this means that an object can have a wave function that is spread out over a large region of space. This leads to uncertainty in the object's position and momentum. Therefore, in the macroscopic world, we do not observe quantum effects and classical mechanics work very well. On the other hand, classical mechanics deals with objects that are much larger than atoms and particles.

In classical mechanics, the momentum of an object is given by the product of its mass and velocity, it does not depend on the object's wave-like properties. However, in the world of quantum mechanics, the concept of momentum is not as straightforward as it is in classical mechanics. An object's momentum in quantum mechanics is represented by its wave function, which is a complex function that describes the probability of finding the object in a particular state or location.

So, the actual momentum of the bus may not be directly comparable with the momentum it would have if classical mechanics were valid. In conclusion, the actual momentum of the bus may not be directly comparable with the momentum it would have if classical mechanics were valid due to the fundamental differences between quantum mechanics and classical mechanics.

To know more about quantum mechanics visit:

https://brainly.com/question/23780112

#SPJ11

A low-voltage thermostat in an electric furnace is used to control the temperature.

The low-voltage thermostat plays a crucial role in regulating the temperature within an electric furnace. When connected to the furnace's heating system, the thermostat acts as a control device, allowing users to set their desired temperature.

Here's how it works:

Sensing the temperature: The low-voltage thermostat contains a sensor that measures the ambient temperature of the room or space where the furnace is located. This sensor detects any fluctuations in temperature, whether it's too hot or too cold.

Signaling the furnace: Once the desired temperature is set by the user, the thermostat compares it to the current room temperature. If the current temperature deviates from the set temperature, the thermostat sends a signal to the furnace.

Adjusting the heating: Upon receiving the signal, the furnace responds accordingly. If the room temperature is lower than the desired temperature, the furnace activates its heating elements, generating warmth. Conversely, if the room temperature exceeds the desired temperature, the furnace shuts off or reduces its heating output.

In summary, the low-voltage thermostat in an electric furnace acts as a mediator between the user and the heating system. It senses the temperature, signals the furnace when necessary, and adjusts the heating output to maintain a comfortable and consistent temperature in the space. By doing so, it helps ensure energy efficiency and provides a comfortable environment for occupants.

Learn more about Thermostats.

brainly.com/question/32266604

#SPJ11

Answer: It's D.

Explanation:

I just did it.

The system has parts that sense the amount of output, allows negative feedback to control a system. Option D is correct.

A system is a collection of interconnected or interacting pieces that follow a set of rules to produce a coherent whole.

The limits, structure, and purpose of a system, which is surrounded and impacted by its environment, are characterized and expressed in its functioning.

A feedback system helps the system to work in the productive way. Negative comments might help you get back on track. It allows you to view projects and activities in a new light.

It allows you to learn, grow, and improve anything from your own talents to the project you're working on right now.

The system has parts that sense the amount of output, allows negative feedback to control a system.

Hence, option D is correct.

To learn more about the system, refer to the link;

https://brainly.com/question/9061107

#SPJ2

Answer:

ineria

Explanation:

It is due to her inertia of motion that kept her moving forward.

We have Nina who is riding skateboard.

We have to determine why Nina fell off the skateboard on rough pavement.

A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

According to the question -

Before the rough patch, Nina was riding smoothly. However as soon as she enters the rough patch, the rough patch acts as an obstruction to the forward movement of skateboard. The skateboard and Nina are both moving with same velocity. The skateboard is in contact with the rough patch and as soon as the skateboard's motion is obstructed, the skateboard comes to rest but due to the inertia of motion, Nina continues to move with the same forward velocity. In this way, Nina falls ahead of skateboard.

Hence, it is due to her inertia of motion that kept her moving forward.

To solve more questions on Inertia, visit the link below-

https://brainly.com/question/3268780

#SPJ2

The force is  1.1 * 10^-32 N

Coulomb's law is a fundamental law in physics that describes the electrostatic interaction between charged particles. It states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law can be written as:

F = k * q1 * q2 / r^2

where F is the electrostatic force between the charges q1 and q2, r is the distance between the charges, and k is the Coulomb constant, which is approximately equal to 9 x 10^9 N * m^2 / C^2. The force F is a vector quantity, meaning that it has both magnitude and direction, and is directed along the line joining the two charges.

We have that;

F = Kq1q2/r^2

F = 9 * 10^9 * 1.6*10^ -19 * 3.2*10^ -19/(0.02)^2

F = 1.1 * 10^-32 N

Learn more about electric force:https://brainly.com/question/2526815

#SPJ1

Answer:

Velocity

Explanation:

The slope of a position-time graph gives velocity of a moving object.

The suitable method to determine the age of the surface of terrestrial planets is the crater counting. Because, as the age of the planet increases, its crater count also increases.

Crater counting a proper method to estimate the age of a planet's surface. Based on this method an assumption is made that the a piece of new planetary surface doesn't have impact craters.

The rate of accumulation of impact craters increases with the age of the planetary surface.  Counting the number craters per given area helps to determine how long they have created there and thus, how long the surface has formed.

Dating of samples with radioactive isotopes is used find the age of rocks. Similarly measuring atmospheric thickness and color analysis does not give an idea about the age of the surface of planets. Hence, option c is correct.

To find more on crater counting, refer here:

https://brainly.com/question/1184201

#SPJ1

Answer:

Explanation:

We shall apply law of conservation of momentum at the time of collision

Momentum before collision of both the pins = 1.8 x 3.6 + 0 = 6.48 kg m/s

Momentum after the collision of both the pins = 1.8 x .54 + 1.8 x v where v is velocity of second pin

So , according to law

6.48 = 1.8 x .54 + 1.8 x v

6.48 = .972  + 1.8 x v

v = 3.06 m /s to the right .

Cosmic background radiation is considered evidence for the Big Bang because it is a remnant of the intense heat left over from the Big Bang.

The Big Bang is the prevailing scientific theory that explains the origin of the universe. It proposes that the universe began as a singularity, a point of infinite density and temperature, about 13.8 billion years ago.

From this point, the universe rapidly expanded and cooled, leading to the formation of matter, energy, and eventually stars, galaxies, and planets. The Big Bang theory is supported by various pieces of evidence, including the observed abundance of light elements such as hydrogen and helium, the cosmic microwave background radiation, and the observed large-scale structure of the universe.

This radiation is consistent with a hot and dense early universe, and it fills the universe evenly, in all directions, providing strong support for the idea that the universe started from a single, uniform state and has been expanding ever since.

Additionally, the spectrum of the cosmic background radiation matches the theoretical predictions for the heat left over from the Big Bang, adding further evidence to support the Big Bang model.

To know more about big bang refer to:

brainly.com/question/1933033

#SPJ4

When you apply a force of one pound over an area of one square inch, the pressure exerted is one pound per square inch (psi). This is because pressure is defined as the force exerted per unit area. True.

Therefore, if you increase the force or decrease the area, the pressure will increase accordingly. For example, if you apply a force of two pounds over an area of one square inch, the pressure will be two psi. Conversely, if you apply a force of one pound over an area of two square inches, the pressure will be 0.5 psi. Understanding the relationship between force, area, and pressure is important in many fields, including engineering, physics, and mechanics.

To Know more about pressure visit:

brainly.com/question/30673967

#SPJ11

The property of a transverse wave that stays the same even as the wave's energy and other properties change is the wavelength.

The correct option to the given question is option a.

The wavelength is the distance between two successive points of the wave that are in phase. As the wave's energy and amplitude change, the distance between two successive points of the wave that are in phase remains the same.

This is because wavelength is determined by the frequency of the wave and the speed of propagation. The frequency of the wave is the number of cycles of the wave that occur in one second, while the speed of propagation is the rate at which the wave travels through a medium.

If the frequency of the wave and the speed of propagation remain the same, then the wavelength will also remain the same even as the wave's energy and other properties change. This property is known as the characteristic of the wave.The amplitude is the maximum displacement of a point on the wave from its rest position. The frequency is the number of cycles of the wave that occur in one second. The rest position is the position of the medium when it is not disturbed.

Hence, wavelength of a transverse wave remains same even as the wave's energy and other properties change.

For more such questions on transverse wave visit:

https://brainly.com/question/31402164

#SPJ8

This is the equation of motion for the weight attached to the spring

32 * y'' = -k * 2 + 32 * 32 - 10 * y'

Let's denote the equilibrium position of the weight as the reference point (y = 0). When the weight is pulled down 6 inches below equilibrium, its displacement is -0.5 ft. We can choose the downward direction as positive.

1. Determine the spring force:

The spring force is proportional to the displacement from the equilibrium position and follows Hooke's Law: F_spring = -k * y, where k is the spring constant. Since the weight stretches the spring by 2 ft, we have F_spring = -k * 2 ft.

2. Determine the force due to gravity:

The weight has a mass of 32 lb, so the force due to gravity is F_gravity = m * g, where g is the acceleration due to gravity (32 ft/s^2).

3. Determine the force due to resistance:

The force due to resistance is given as F_resistance = -10 * y' ft/s, where y' is the velocity of the weight.

Applying Newton's second law, the sum of the forces equals the mass of the weight times its acceleration:

m * y'' = F_spring + F_gravity + F_resistance

32 lb * y'' = -k * 2 ft + 32 lb * 32 ft/s^2 - 10 ft/s * y'

Simplifying the equation and converting the mass and force units to the appropriate unit system, we have:

32 * y'' = -k * 2 + 32 * 32 - 10 * y'

This is the equation of motion for the weight attached to the spring. The specific value of k and any initial conditions would be needed to solve the equation further and obtain a more detailed motion equation.

for more questions on motion
https://brainly.com/question/26083484
#SPJ8

Answer:

Explanation:

The gravitational force between the earth and another body is F = -GM_em/r^2 r where G = 6.67 times 10^-11 Nm^2/kg^2 is the gravitational constant, M_e = 5.97 times 10^24 kg is the mass of the earth, m is the mass of the other body, and r is the position vector of the second body with respect to the centre of the earth.

The pendulum bob B of mass M is released from rest when \(\theta=0^0\). the tension in the cord at the instant the bob reaches point D, \(\theta = \theta1 = 45^0\) is 41.72 N.

The motion of a simple pendulum is idealized. It consists of a point mass attached to an inextensible, massless cable or rod suspended from a pivot point. The pendulum oscillates about the pivot point in a plane that is orthogonal to the rod or cable and has a period that depends solely on the pendulum's length and gravitational acceleration.

As a result, the time period of a pendulum is calculated. The time it takes for a pendulum to swing back and forth is referred to as the time period. It is denoted by T and measured in seconds.

A simple pendulum's time period is calculated using the formula:

\(T = 2\pi(L/g)^{(1/2)}\)

where T = time period, L = length of the pendulum, and g = acceleration due to gravity = \(9.81 m/s^2\).

Tension in the string at the time of release \(\theta = 0^0\)in the pendulum. It implies that the pendulum is vertical. At this point, the tension in the cable is equal to the weight of the bob.

Mg = Tension = 3 x 9.81 = 29.43 N

When the bob reaches point D, \(\theta = \theta1 = 45^0\), the tension in the cord is determined. At point D, the velocity of the bob is

\(v = L\sqrt2gL = \sqrt(2 * 9.81 * 2) = 6.26 m/s\)

Kinetic Energy of bob KE = \((1/2)mv^2KE = (1/2) * 3 * (6.26)^2 = 58.46 J\)

Potential energy of the bob at D = mghU = mghU = 3 × 9.81 × (2 - 2cos45) = 39.22 J

Total mechanical energy at D = KE + U58.46 + 39.22 = 97.68 J

The total mechanical energy at D is equal to the initial mechanical energy since no energy is lost in the absence of any external forces.

WE = KE + UE = PE = mgh = 3 x 9.81 x 2 = 58.86 J

From the formula of total mechanical energy,

WE = Tension x L cosθTension

= (WE / L cosθ)Tension = (58.86 / (2cos45))

= 41.72 N

Therefore, the tension in the cord at the instant the bob reaches point D, \(\theta = \theta1 = 45^0\) is 41.72 N.

Learn more about pendulum here:

https://brainly.com/question/29702798

#SPJ11

The  reaction forces are as follows:

Reaction forces are the force which act in an opposite direction to an applied force.

According to Newton's third law of motion, action and reaction are equal but oppositely-directed.

Considering the given forces, the reaction forces are as follows:

A baseball bat hits a ball = the reaction force is that of the ball hitting the bat

A bowling ball pushes up against the pins = the pins pushing against the bowling ball

Air particles push outward against a balloon = the walls of the balloon pushing against the air particles

During an earthquake, tectonic plates move = the weight of the tectonic plates.

Learn more about reaction forces at: https://brainly.com/question/1013858

#SPJ1

The answers are Part A: The acceleration of the centre of the hoop is a = μ * g and Part B: The minimum coefficient of static friction required is μ >= \(sin(\theta).\)

Part A: To determine the acceleration of the centre of the hoop, we can consider the forces acting on it. The gravitational force can be decomposed into two components: one parallel to the ramp and the other perpendicular to it. The component parallel to the ramp is responsible for accelerating the hoop down the incline. It can be calculated as m * g * sin(theta), where m is the mass of the hoop and theta is the angle of the ramp with the horizontal.

Since the hoop is rolling without slipping, the frictional force opposes the motion and prevents slipping. The frictional force can be expressed as the product of the coefficient of friction (μ) and the normal force. The normal force acting on the hoop is equal to the weight of the hoop, which is m * g. Therefore, the frictional force is μ * m * g.

Considering the torque equation for rolling motion, the torque due to the net force on the hoop must be equal to the product of the moment of inertia (I) and the angular acceleration (α). For a hoop, the moment of inertia is given by \(I = m * r^2\).

By equating the torque and the net force, we have:

\(\mu * m * g * r = m * r^2 * \alpha\)

Since the hoop rolls without slipping, the linear acceleration (a) of the center of the hoop is related to the angular acceleration as a = r * α.

Substituting this into the equation above, we have:

μ * g = r * α

Therefore, the acceleration of the center of the hoop is given by a = μ * g.

Part B: The minimum coefficient of static friction (μ) required for the hoop to roll without slipping can be determined by considering the limiting condition when slipping is about to occur. In this case, the maximum static frictional force (\(f_s\)) is equal to the product of the coefficient of static friction and the normal force.

The normal force acting on the hoop is equal to the weight of the hoop, which is m * g. Therefore, the maximum static frictional force is μ * m * g.

To prevent slipping, the maximum static frictional force must be greater than or equal to the component of the gravitational force parallel to the ramp, which is m * g * sin(theta).

Setting up the inequality, we have:

μ * m * g >= m * g * \(sin(\theta)\)

Canceling out the mass and gravity terms, we obtain:

μ >= \(sin(\theta)\)

Therefore, the minimum coefficient of static friction needed for the hoop to roll without slipping is equal to the sine of the angle of the ramp with the horizontal, μ >= \(sin(\theta).\)

To learn more about acceleration from the given link

https://brainly.com/question/460763

#SPJ4

Answer:

Newton's Second Law of Motion states that a force on an object is equal to the mass of the object multiplied by its acceleration ( F = ma ).

The football then exerts an equal amount of force in the opposite direction on the kicker's foot.

Everything in football that has a mass and acceleration will have a force.

Explanation:

Answer:

The more force applied to the football the more acceleration. Kicking or throwing the ball harder makes it move faster and cover more distance.

Explanation:

Plato/Edmentum

Answer:

velocity of ball A after the collision is 1.8 m/s, 49.1° above the horizontal

Explanation:

This is a conservation of elastic momentum in 2 dimensions problem.

initial momentum must equal final momentum:  pi = pf

Break up the pf of B into its x and y components to solve.  Since the balls are identical, you can leave mass (m) out of the calculations:

x:   2 + 0 = 1.6(cos60) + Ax

Ax = 1.2     x component of velocity of ball A after the collision

y:  0 + 0 = -1.6(sin60) + Ay

Ay = 1.3856  y component of velocity of ball A after the collision

R-A = √(1.2² + 1.3856²) = 1.83 ≈ 1.8 m/s   resultant velocity of ball A after the collision  

∅ = tan⁻¹(¹1.3856/1.2) = 49.1⁰   angle ball A is going after the collision

Answer: 7.51

Explanation: Acellus

The charges on each plate are acquired is 4.403×10⁻¹⁹ C if the two plates are separated by 2.42×10⁻⁵ m with an area of 8.22×10⁻⁴ m².

It is defined as the energy required in moving the unit's positive charge from one point to another. It is obtained from the ratio of the charge and distance. The unit of electric potential is Volt(V)

The electric potential between the parallel plates is obtained from the product of the Electric field and the distance of separation between the plates.

From the given,

Area of the plates, A = 8.22×10⁻⁴ m²

Distance of separation (d) = 2.42×10⁻⁵m

Voltage (V) = 25 V

Charge on the plates (Q) =?

The electric potential V = E/d, where E is the electric field and the unit of an electric field is N/C. d is the distance of separation of the plates. The electric field is the ratio of charge and area.

Electric field E = Q/ (A×ε), where A is the area of the parallel plates, and Q is the charge in the conductor. ε is permittivity in free space and is equal to 8.845×10⁻¹²C²/N.m².

The electric potential V = E/d

V = (Q/ (A×ε)) / d

  = Q / (A ×ε× d)

Q =  V×A×ε× d

   = 25×8.22×10⁻⁴×2.42×10⁻⁵×8.845×10⁻¹²

   = 4,403 × 10⁻²¹

   = 4.4 ×10⁻¹⁹C

The charge accumulated on the plates is 4.4 ×10⁻¹⁹C.

Learn  more about the Electric potential in parallel plates:

https://brainly.com/question/29352646

#SPJ2

Answer:

The correct option is;

(b) The end A of the solenoid behaves like a north pole

Explanation:

According to Lenz's law we have that the induced emf direction in the solenoid due to the rapid introduction of the bar magnet will be such that the electric current induced will have a resultant magnet field that will  oppose to the movement of the north pole of the bar magnet that resulted in the magnetic field

Therefore, the opposing magnetic pole to the north pole of a magnet is a north pole and the solenoid end A will act like the north pole.

The same distance could have been traveled over the given time period at a constant velocity of 8 units per second.

To find the constant velocity, we need to calculate the average velocity over the given time period. The average velocity is equal to the total distance traveled divided by the total time taken. In this case, the total time period is from t = 0 to t = 4.

To find the total distance, we integrate the velocity function over the time period:

Distance = ∫[0 to 4] v(t) dt

After performing the integration, we find the total distance traveled over the time period.

Next, we divide the total distance by the total time (4 seconds) to find the average velocity. In this case, the constant velocity that would cover the same distance over the given time period is 8 units per second.

learn more about " velocity ":- https://brainly.com/question/80295

#SPJ11

The net force is non-zero, but the net torque is zero.

In analyzing the state of the disc-shaped spacecraft, we need to consider the forces and torques acting on it. The statement mentions that all rocket engines generate the same magnitude of force, and the spacecraft is in deep space with no objects nearby.

When all rocket engines generate the same magnitude of force, the net force acting on the spacecraft is non-zero. This is because the forces do not cancel each other out, resulting in a net force in a specific direction.

However, since there are no objects in the spacecraft's vicinity, there are no external torques acting on it. The absence of external torques implies that the net torque on the spacecraft is zero.

Therefore, the correct statement describing the state of the disc-shaped spacecraft is that the net force is non-zero, but the net torque is zero.

Learn more about Torque

brainly.com/question/30338175

#SPJ11

Answer:

Neither "matter" nor "energy" can be created or destroyed, but they can be changed from one form to the other.

Explanation: