which answer would you choose if the rocks fall out through a hole in the floor of the car, one at a time?

Answer:

F'=708.53 N

Explanation:

We have,

The lifting force, F, exerted on an airplane wing varies jointly as the area, A, of the wing's surface and the square of the plane's velocity, v. It means tat,

\(F=kAv^2\)

k is constant

If, A = 190 Ft², v = 220 mph, F = 950 pounds

Let's find k first from above data. So,

\(k=\dfrac{F}{Av^2}\\\\k=\dfrac{950}{190\times 220^2}\\\\k=0.0001033\)

It is required to find the lifting force on the wing if the plane slows down to 190 miles per hour. Let F' is the new force. So,

\(F'=0.0001033\times 190\times (190)^2\\\\F'=708.53\ \text{pounds}\)

So, the lifting force is 708.53 pounds if the plane slows down to 190 miles per hour.

The lifting force on the wing if the plane slows down to 190 miles per hour F'=708.53 N

The force is an external agent applied to the body to displace it from its position .The force can be of different types lifting force, Frictional force, viscous force etc.

We have,

The lifting force, F, exerted on an airplane wing varies jointly as the area, A, of the wing's surface and the square of the plane's velocity, v. It means  that,

\(F=kAv^2\)

k is constant

If, A = 190 Ft², v = 220 mph, F = 950 pounds

Let's find k first from above data. So,

\(k=\dfrac{F}{Av^2}\)

k=950/190*220^2

k=0.0001033

It is required to find the lifting force on the wing if the plane slows down to 190 miles per hour. Let F' is the new force. So,

F'=0.0001033×190×190^2

F'=708.53 pounds

So, the lifting force is 708.53 pounds if the plane slows down to 190 miles per hour.

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Answer:

Chemical engineering is a multi-disciplinary branch of engineering that combines natural and experimental sciences such as chemistry and physics, along with life sciences such as biology, microbiology and biochemistryplus mathematics and economics to design, develop, produce, transform, transport, operate

Explanation:

Answer:

A. the process needs to produce significant amounts of ammonia

C. the process needs to be able to be performed safely

Explanation:

a p e x

Answer:

5.0 kg

Explanation:

use the equation; (m1v1i) + (m2v2i) = (m1v1f) + (m2v2f)

The probability of stopping at a traffic light is about 47.22%.

With 10 traffic lights, expect to be stopped for approximately 5 minutes and 45 seconds along the main street.

(a) To calculate the probability of stopping at a particular traffic light, we need to consider the cycle time of the traffic lights. The cycle time is the total time taken for one complete sequence of green, amber, and red signals. In this case, the cycle time is 55 + 17 + 48 = 120 seconds.

The probability of stopping at a particular traffic light can be calculated by dividing the red signal duration by the cycle time. Therefore, the probability is 48/120 = 0.4 or 40%.

However, in California, no one stops on amber, so we need to exclude the amber duration from the calculation. Therefore, the probability becomes 48/(55 + 48) ≈ 0.4722 or 47.22%.

(b) If there are 10 traffic lights on the main street, we can calculate the expected amount of time spent stopped at traffic lights by multiplying the probability of stopping at each traffic light by the average duration of being stopped.

The average duration of being stopped at a traffic light is the sum of the red signal duration and half of the amber signal duration. So, the average duration is (48 + 17/2) = 56.5 seconds. To find the expected amount of time stopped at traffic lights, we multiply the average duration by the number of traffic lights: 56.5 seconds * 10 = 565 seconds.

Therefore, if you drive all the way down the main street, the expected amount of time you are likely to be stopped at traffic lights is approximately 565 seconds, which is equivalent to 5 minutes and 45 seconds.

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Answer:

A. Yard

Explanation:

Should be correct lol :)

Answer:

Velocity

Explanation:

Objects in motion usually have a speed which is scalar or velocity which is a vector.

A scalar quantity is one with magnitude but has no directional attribute.

A vector quantity is one with both magnitude and directional attribute.

Speed is a scalar quantity that describes the magnitude of motion a body accrues.

Velocity is a vector quantity that describes both the magnitude of motion and the direction of motion in a body.

Answer:

See below

Explanation:

A lot !

KE = 1/2 m v^2

    = 1/2 * 1.35 * ( .501 * 3 * 10^8)^2 =

    1.5248 x 10^16 j

kinetic energy do Superkid's super arm muscles give the stone is 62.6 × 10⁶ J.

Kinetic energy is the energy associated with a motion of a body. When a body is in motion having mass m then it has kinetic energy. Kinetic energy is denoted by K or T. it is expressed in joules. Kinetic energy is given by,

K = 1/2 mv²

Hence an object having zero mass or zero velocity have zero kinetic energy.

In this problem the stone is moving with velocity which is comparable with the speed of light, hence we have to find relativistic kinetic energy.

The relativistic kinetic energy is given by,

\(K = m_{0} c^2(\frac{1}{\sqrt{1-\frac{v^2}{c^2}} } -1)\)

putting all the values in the equation

\(K = 1.35*3*10^8(\frac{1}{\sqrt{1-\frac{(0.5c)^2}{c^2} } }-1 )\)

K = 62.6 × 10⁶ J

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Answer:

Biconcave lens or Diverging lens.

Virtual Image

0.75cm on the same side as the object.

Explanation:

Biconcave lens. Biconcave lenses form all images at the same side as the object. Although a biconvex lens can exhibit the same phenomena, it only occurs when the object is in between the focal point and the optical center (object distance<focal length). From the given parameters, the object distance is 3cm and the which is obviously greater than the focal length.

So, we conclude that the lens used is a biconcave lens.

A concave lens (biconcave, plano-convex,) alway produces a virtual image.

Let u, v and f represent the object distance, image distance and focal length of the lens respectively.

In this case,

u = 3cm

v = ?

f = -1cm ( f is negative for diverging lenses)

1/f = (1/u) + (1/v)

-1 = (1/3) + (1/v)

v = -3/4cm = -0.75 cm

The negative sign means that it's a virtual image.

The efficiency of this light bulb is 25% .

Given data :

output = 30j

Input = 120j

Efficiency  = output / input x 100

  = 30 / 120 x 100

  = 25%

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Intensity changes as a result in resultant wave.

When two waves are in phase and their maxima add, a process known as constructive interference occurs where the combined amplitude of the two waves equals the sum of their individual amplitudes. The minima of the waves would line up similarly.

A wave of amplitude 2A is produced when two waves with the same phase, frequency, and amplitude (A) superimpose. As a result, its intensity doubles. The maximum angle at which fringes can be seen on a screen is 90°.

Condition for constructive interference: ΔL = nλ, where n is any integer. The quantity I represents the wave's intensity as a function of the two (identical) parent waves' phase differences.

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The speed of the fluid near the right-hand end of the tube is approximately 10.06 m/s.

Bernoulli's equation is a fundamental principle in fluid mechanics that relates the pressure, velocity, and height of a fluid in a flow. It states that for an incompressible fluid flowing in a steady state through a pipe of varying cross-sectional area, the total energy of the fluid (consisting of pressure energy, kinetic energy, and potential energy) remains constant along any streamline of the flow. Mathematically, the equation is:

P + (1/2)ρv² + ρgh = constant

To find the speed of the fluid near the right-hand end of the tube, we can use the Bernoulli's equation, which relates the pressure and velocity of a fluid in a flow:

P₁ + (1/2)ρv₁² = P₂ + (1/2)ρv₂²

where P1 and v1 are the pressure and velocity of the fluid at the left hand end of the tube (where the pipe is wider), and P2 and v2 are the pressure and velocity at the right-hand end (where the pipe is narrower).

We can redo this equation to solve for v₂:

v₂ = sqrt(2*(P₁-P₂)/ρ + v₁²)

where sqrt denotes the square root.

Using the given values:

A₂/A₁ = 0.46

dP = 27.6 Pa

ρ = 2.93 kg/m³

We can find the pressure at the left hand end using the fact that the pressure is the same at the same height, and the fluid is incompressible, so its density is constant:

P₁ = P₂ + dP = P₂ + 27.6 Pa

The area ratio gives us:

A₂ = 0.46*A₁

Now we need to find v₁. We can use the continuity equation, which states that the mass flow rate (ρAv) is constant in an incompressible fluid:

ρ₁A₁v₁ = ρ₂A₂v₂

where ρ1 is the density of the fluid at the left hand end, which is the same as ρ₂, and A₁ and A₂ are the pipe's cross-sectional areas at the left and right ends, respectively.

Substituting A₂ = 0.46 × A₁ and simplifying, we get:

v₁ = (0.46)² × v₂

Substituting this into the Bernoulli's equation, we get:

P₁ + (1/2)ρv₁² = P₂ + (1/2)ρv₂²

Substituting P₁ = P₂ + 27.6 Pa and v₁ = (0.46)² × v₂, and solving for v₂, we get:

v₂ = √((227.6)/(0.46^2ρ) + (0.46)⁴ × v₂²/ρ)

Simplifying this equation, we get:

v₂= √((227.6)/(0.46^2ρ × (1-0.46⁴)))

Substituting the given values, we get:

v₂ = √((227.6)/(0.46²²°⁹³ × (1-0.46⁴))) = 10.06m/s

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If I move 3 m east and 4 m north, then my displacement would be 5m.

In geometry and mechanics, displacement is defined as a vector whose length is the shortest distance from initial to the final position of a point P undergoing the motion.

If an object moves relative to the reference frame—for example, if professor moves to the right relative to whiteboard or passenger moves toward the rear of airplane—then object's position changes. And this change in position is known as displacement.

Given AB= 3m east and BC= 4m north

AC= √ 3² + 4²= 25

So, AC, displacement = 5m

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Explanation:

Catastrophism is a geological concept or ideology that was formerly in place. It suggests that the earth crust has evolved through only drastic and violent geological events.

Uniformitarianism suggests that the earth carefully evolved over a period of time and that the processes that are occurring today have occurred in times past.

The term used to describe the energy of a system that is available to do work is free energy.

Free energy is the energy that is available in a particular chemical system to do useful work.

The Gibbs free energy denoted by G is the enthalpy of a system minus the product of its entropy and absolute temperature.

It is referred to as free because the energy is readily available anytime. Free energy is measured in kilojoules per mole (KJ/mol).

Therefore, it can be said that the term used to describe the energy of a system that is available to do work is free energy.

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Answer:

Winter

Explanation:

Answer:

Explanation:

The answer is A. First of all, due to the First Law of Thermodynamics, energy cannot be created or destroyed, it only changes form. That being said, it is impossible for the PE and the KE to both increase or decrease at the same time. The second one starts decreasing, the other starts increasing at the exact same rate. PE exists or is at its highest when an object has the potential to fall to a point lower than it is, and it is at this point where Kinetic energy is the lowest. If this block is kicked UP a ramp, which is odd but there you have it, the potential energy increases as it gets higher off the ground. Because of gravity, and assuming that once the block is kicked, the foot that kicked it is no longer important to it (meaning it's not being pushed up, it's just kicked once and that's it) and it will slow down very quickly. KE exists where there is a great amount of velocity.

The answer is A.

The magnitude of the force is 6 x 10⁻¹² N, and the direction is perpendicular to both the velocity and the magnetic field, pointing toward the west.

The force on a charged particle moving in a magnetic field is given by the formula:

F = q(v x B)

where F is the force, q is the charge of the particle, v is the velocity vector of the particle, and B is the magnetic field vector.

In this case, the electron has a negative charge, so q = -1.6 x 10⁻¹⁹ C. The velocity vector of the electron is vertical and downward, so we can write it as:

v = -2.5 x 10⁷ m/s j

where j is the unit vector pointing in the vertical direction. The magnetic field vector is uniform and points north, so we can write it as:

B = 1.5 T i

where i is the unit vector pointing in the horizontal direction (toward the east).

Taking the cross product of v and B, we get:

v x B = (-2.5 x 10⁷ j) x (1.5 i) = -3.75 x 10⁷ k

where k is the unit vector pointing perpendicular to both i and j (toward the west).

Substituting the values of q, v x B, and simplifying, we get:

F = q(v x B) = (-1.6 x 10¹⁹ C) (-3.75 x 10⁷ m/s k)

= 6 x 10⁻¹² N k

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Answer: Budding is one of the methods of asexual reproduction in organisms.

Explanation:

The asexual reproduction is the process in which new organisms are produced from the parent organism without the formation of gametes. The budding is one of the methods of asexual reproduction in which from a mature organism a bud develops as an outgrowth. The bud obtains the nutrition from the parent organism and increase in size. On maturity the bud dissociate or detach from the parent organism and lives as separate individual organism. Budding can be seen in the case of Hydra, and Yeast.

Answer:

1.)When you arrive from school and you smell cookies baking in the kitchen your brain will tell you that you are hungry and that you should go to the kitchen at that point your sense organs like your nose helps you to detect that something is baking(cookies)and your nervous system (brain)will tell you that you are hungry and it will command/direct your brain to go to the kitchen then for you to eat the cookies and drink the milk the digestive system is going go help you to chew,swallow and digest the food which has been taken and when you also run to the kitchen at the beginning your brain will direct your skeletal and muscular system because the skeletons and muscles work hand in hand,and when you finish your meal the body will circulate some nutrients or minerals from the food or snack taken to other parts of the body for energy.

2.)When you sleep the whole body is asleep except the heart which needs to continue circulating blood around the whole system and sometimes the brain may not rest when you are sleeping it may continue to do it's work that's why some people usually sleep walk or sleep talk,it means the brain is not at rest and still doing some things....Thank you for the question I hope it is very useful to you.

Answer:

a = (Vf - Vi) / t = (10.9 - 27.7) / 2.37 = -16.8 / 2.37 = -7.09 m/s/s

negative means slowing down

Explanation:

Answer:

When the  water is frozen it turns to ice and the density decreases.

Explanation:

Have A Wonderful Day !!

Answer:

43740 N and attractive force

Explanation:

Given that,

Charge 1, q₁ = -54.0 μC

Charge 2, q₂ = +36.0 μC

The distance between charges, r = 2 cm = 0.02 m

We need to find the force between charges. The formula for the force between charges is given by :

\(F=k\dfrac{q_1q_2}{r^2}\)

Put all the values,

\(F=9\times 10^9\times \dfrac{54\times 10^{-6}\times 36\times 10^{-6}}{(0.02)^2}\\\\F=43740\ N\)

As the charges are opposite, the force between them is attractive. Hence, the required force is 43740 N.

The acceleration of the plane will be −8 m/s²

How to find the acceleration of a plane?

Acceleration is the rate of change in velocity over time (Δv/t).

Given, that the initial velocity of the plane u=480 m/s

The final velocity of the plane is zero after landing, v= 0 m/s

t= 1 minute= 60 seconds

we know, v=u + at

0= 480 + 60a

a=\(\frac{-480}{60}\)  = -8m/s²

Thus, the acceleration of the plane is -8 m/s²

(negative acceleration implies that the object is slowing down)

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Answer:

It is not still true that the average velocity of the particle is equal to half the sum of the initial and final velocities when the acceleration of the particle is not constant

Explanation:

The motion of a particle under constant acceleration, 'a', is be given by the following kinematic equations;

v² = u² + 2·a·s

v = u + a·t

Where;

v = The final velocity of the particle

u = The initial velocity of the particle

a = The acceleration of the particle

s = The distance through which the particle travels

t = The time of motion of the particle

By simplifying the above equation, we have;

v² - u² = 2·a·s

(v² - u²)/(2·a) = s

(v - u) × (v + u)/(2 × a) = s

((v - u)/a) × ((v + u)/2) = s

From v = u + a·t, we have;

t = (v - u)/a

∴ ((v - u)/a) × ((v + u)/2) = t × ((v + u)/2) = s

∴ ((v + u)/2) = s/t

The average velocity = (Total distance traveled by the particle) ÷ (The time of travel of the particle)

∴ The average velocity = s/t = ((v + u)/2) = Half the sum of the initial and final velocity

However, it is not still true that the average velocity of the particle is equal to half the sum of the initial and final velocities when the acceleration of the particle, 'a', is not constant, as the velocity time graph is no longer a straight line graph and the distance traveled by the particle, 's', which is the area under the velocity time graph, 'A', (given by the sum of area of the triangle and the rectangle given by the area under straight line graph for constant velocity) cannot be given directly by the product of the time and the average velocity.

Approximately 5.00 million electrons participate in the avalanche caused by the single initial electron in a Geiger tube.

In a Geiger tube, the voltage between the electrodes creates an electric field that accelerates a single initial electron. This electron undergoes collisions with gas molecules, leading to gas ionization and the release of additional electrons. The discharge of a 5.00 pF capacitor represents the charge required to initiate the avalanche.

Using the charge equation Q = CV, where Q is the charge, C is the capacitance, and V is the voltage, we can calculate the total charge released. Substituting the values, Q = (5.00 pF) × (1.00 kV) = 5.00 × 10^(-12) C.

Since the charge on a single electron is approximately 1.60 × 10^(-19) C, we can determine the number of electrons participating in the avalanche by dividing the total charge by the charge per electron. (5.00 × 10^(-12) C) / (1.60 × 10^(-19) C/electron) ≈ 3.13 × 10^7 electrons. Therefore, approximately 5.00 million electrons participate in the avalanche caused by the single initial electron.

The process of gas ionization and the resulting electron avalanche play a crucial role in the operation of Geiger tubes for detecting ionizing radiation. The initial electron, accelerated by the high voltage, creates a cascade effect as it collides with gas molecules, leading to the liberation of a large number of electrons. This multiplication process enables the detection and measurement of ionizing radiation by producing a detectable electrical pulse. By calculating the total charge released and considering the charge per electron, we can estimate that around 5.00 million electrons participate in the avalanche triggered by the single initial electron.

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