A train is travelling along its railroad tracks. It slows down, goes around a turn, speeds back up, coasts at a constant velocity for awhile, then slows down again.

How many times did the train accelerate?

Responses

1

2

3

4A train is travelling along its railroad tracks. It slows down, goes around a turn, speeds back up, coasts at a constant velocity for awhile, then slows down again.

How many times did the train accelerate?

Responses

1

2

3

4

Answer:

The answer is B

Explanation:

The statement is false. Surface seismic waves, such as Rayleigh and Love waves, are generally less destructive than body seismic waves (primary and secondary waves).

Body waves travel through the interior of the Earth, while surface waves propagate along the Earth's surface. Body waves can cause significant damage to structures as they pass through the ground, whereas surface waves tend to dissipate more energy as they move across the surface. However, surface waves can still cause damage, particularly to buildings and structures that are not well-designed to withstand lateral shaking. So, while surface waves may produce more noticeable ground shaking, they are not inherently more destructive than body waves.

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SWOT Analysis Strengths- Paley’s Products has a low overhead cost with the company operating at a high level of efficiency, resulting in competitive pricing.- They have a team of experienced employees who have worked in the industry for several years.- They have a variety of products in the portfolio that can satisfy customers from different sectors.- They are reputable and have a loyal customer base.Weaknesses- They have been slow to adopt new technology, and this may be a disadvantage to the company.- Limited marketing and sales promotion are affecting their sales revenue.-

They depend on a few key customers for the bulk of their sales revenue, leaving them vulnerable to market changes.Opportunities- Expansion of the product line to include unique products.- The establishment of strategic partnerships with other businesses in the industry.- Exploration of new markets, such as international markets.- Improvement of marketing techniques to increase brand awareness.Threats- Changes in consumer preferences towards environmentally friendly products.- Increase in competition from other businesses in the industry.- Fluctuating market prices for raw materials that may lead to price increases.

Strategic Actions to be taken by Paley Products1. Development of an E-commerce platform to allow online transactions with customers. The E-commerce platform will enable Paley to reach a wider customer base, expand its reach, and increase sales revenue.2. Investment in the research and development of new environmentally friendly products. Paley will remain competitive and cater to the needs of consumers who prefer green products.3. Establishment of strategic partnerships with other businesses in the industry to leverage the strength of other companies in the industry and to develop new products or increase market share.4. Improvement of marketing techniques to increase brand awareness and improve visibility. A marketing strategy that incorporates social media and other digital channels can help promote the brand to potential customers.5. Expansion into international markets. This will enable Paley to diversify its customer base and generate more revenue. Paley can start by targeting nearby countries, then expand globally as they gain more experience and financial stability.

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☁️ Answer ☁️

Internal radiation exposure hazards result from radioactive material that gets inside the body when you breathe it

Hope it helps.

Have a nice day hyung/noona!~ ￣▽￣❤️

Answer:

The answer is D or Fertilizer, sorry for the late answer

Explanation:

Answer:

D Fertilizer hope this helps ..

Explanation:

Answer:

For a material to be a good conductor, the electricity passed through it must be able to move the electrons; the more free electrons in a metal, the greater its conductivity.

The distance between the planes is approximately 644.00 meters at the moment the air traffic controller makes a note about their positions.

For Boeing 747 it is given that:

Altitude: 2500 m

Climbing at 10° above the horizontal and moving 30° north of west.

We can break down the Boeing's motion into components:

1. Horizontal component (x-coordinate):

\(\[x_{\text{Boeing}} = 2500 \tan(10^\circ) \cos(30^\circ)\]\)

2. Vertical component (y-coordinate):

\(\[y_{\text{Boeing}} = 2500 \tan(10^\circ) \sin(30^\circ)\]\)

3. Westward motion (z-coordinate):

\(\[z_{\text{Boeing}} = -2500 \tan(10^\circ)\]\)

So, the position vector of the Boeing 747 relative to the control tower is:

\(\[\vec{r}_{\text{Boeing}} = (x_{\text{Boeing}}, y_{\text{Boeing}}, z_{\text{Boeing}})\]\)

Now let's calculate the values:

\(\[x_{\text{Boeing}} = 2500 \tan(10^\circ) \cos(30^\circ)\\\\ \approx 405.51 \, \text{m}\]\)

\(\[y_{\text{Boeing}} = 2500 \tan(10^\circ) \sin(30^\circ)\\\\ \approx 72.17 \, \text{m}\]\)

\(\[z_{\text{Boeing}} = -2500 \tan(10^\circ)\\\\ \approx -454.66 \, \text{m}\]\)

So,

\(\[\vec{r}_{\text{Boeing}} \approx (405.51 \, \text{m}, 72.17 \, \text{m}, -454.66 \, \text{m})\]\)

For Douglas DC-3:

Given:

Altitude: 3000 m

Climbing at 5° above the horizontal and moving directly west.

1. Horizontal component (x-coordinate):

\(\[x_{\text{DC-3}} = -3000 \tan(5^\circ)\]\)

2. Vertical component (y-coordinate):

\(\[y_{\text{DC-3}} = 3000 \tan(5^\circ) = 3000 \cdot \frac{\tan(5^\circ)}{\cos(90^\circ)}\]\)

The westward motion does not affect the y-coordinate.

So, the position vector of the Douglas DC-3 relative to the control tower is:

\(\[\vec{r}_{\text{DC-3}} = (x_{\text{DC-3}}, y_{\text{DC-3}}, 0)\]\)

Calculating the values:

\(\[x_{\text{DC-3}} = -3000 \tan(5^\circ)\\\\ \approx -261.80 \, \text{m}\]\)

\(\[y_{\text{DC-3}} = 3000 \cdot \frac{\tan(5^\circ)}{\cos(90^\circ)}\\\\ \approx 267.95 \, \text{m}\]\)

So,

\(\[\vec{r}_{\text{DC-3}} \approx (-261.80 \, \text{m}, 267.95 \, \text{m}, 0 \, \text{m})\]\)

Now, let's calculate the distance between the two planes using the Euclidean distance formula:

\(\[d = \sqrt{(x_{\text{Boeing}} - x_{\text{DC-3}})^2 + (y_{\text{Boeing}} - y_{\text{DC-3}})^2 + (z_{\text{Boeing}} - 0)^2}\]\)

Substituting the values and calculating:

\(\[d \approx \sqrt{(405.51 \, \text{m} - (-261.80 \, \text{m}))^2 + (72.17 \, \text{m} - 267.95 \, \text{m})^2 + (-454.66 \, \text{m})^2}\]\)

\(\[d \approx \sqrt{167667.24 + 40631.96 + 206602.27} \approx \sqrt{414901.47} \approx 644.00 \, \text{m}\]\)

Thus, rounding the result to two decimal places: The distance between the planes is approximately 644.00 meters.

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Your question seems incomplete, the probable complete question is:

In the control tower at a regional airport, an air traffic controller monitors two aircraft as their positions change with respect to the control tower. One plane is a cargo carrier Boeing 747 and the other plane is a Douglas DC-3. The Boeing is at an altitude of 2500 m, climbing at 10°above the horizontal, and moving 30° north of west. The DC-3 is at an altitude of 3000 m, climbing at 5° above thehorizontal, and cruising directly west. (a) Find the position vectors of the planes relative to the control tower. (b) What is the distance between the planes at the moment the air traffic controller makes a note about their positions?

For Each Of The Following Scenarios Described Where A Molecule Or Ion Is Moving From One Side Of A Membrane To The Other, Option A is correct answer.

Scenario A: Oxygen moving across a plasma membrane Answer: A. Simple Diffusion Scenario B: Glucose moving across a plasma membrane Answer: C. Facilitated Diffusion By A Carrier/Transport Protein Scenario C: Sodium moving across a plasma membrane Answer: B. Facilitated Diffusion By A Channel Protein Scenario D: Water moving across a plasma membrane Answer: A. Simple Diffusion : Simple diffusion allows the nonpolar and small molecules to pass through the plasma membrane without any assistance of proteins. In facilitated diffusion, larger polar molecules or ions move across the membrane through the help of transport proteins. Transport proteins are of two types, channel and carrier proteins. Channel proteins provide an open path for the molecules to move whereas carrier proteins hold the molecules to move across the membrane and change their shape.

Option A is correct answer.

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Answer:

Sonic boom.

When something breaks the sound barrier. (Moves faster than sound, like lighting)

Explanation:

Try flying a plane.

Answer:

she is going to be mad dude

Answer:

C

Explanation:

The starting skill level of the physical activities included in a personal fitness program should be determined from other individuals' fitness programs is a statement which is not true. Everyone starts their personal fitness journey at a different level which should be regarded . A fitness test should be taken to determine where an individual should start their new lifestyle.

Answer:

C. I got it right :)

Explanation:

The period of pendulum is still the same at 1.4 seconds.

We need to know about pendulum experiment to solve this problem. The pendulum is a simple experiment to calculate gravitational acceleration. The gravitational acceleration can be calculated by

g = 4π² . L / T²

where g is gravitational acceleration, L is the length of the string and T is the period.

From the question above, we know that:

L = 0.5 meters

m1 = 1 kg

θ = 12⁰

m2 = 2 . m1

T1 = 1.4 seconds

Find the period of pendulum

g = 4π² . L / T²

T² = 4π² . L / g

T = √(4π² . L / g)

The period of a pendulum does not depend on the mass of the object, hence the period is still the same at 1.4 seconds.

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Answer:

SA = 5900 sqcm

Explanation:

I am assuming you meant surface area since this is a three dimensional box.  This formula for surface area (SA) is SA = 2 (wl + hl + hw).  Once you have that would just have to plug the numbers in and calculate!

To solve this we must be knowing each and every concept related to frequency. Therefore, 40kHz represents, 40,000 times something is happening per sec.

In physics, frequency is the quantity of waves that travel through a given point in one unit of time; it is also the amount of cycles and vibrations that a body undergoing periodic motion undergoes in one unit of time.

After traveling through a sequence of events or locations and returning towards its initial condition, an object in vibration is thought to have traversed one cycle and one vibration. Also see angular velocity and simple harmonic motion. 40kHz represents the number of something that is happening per second. 40,000 times something is happening per sec.

Therefore, 40kHz represents,  40,000 times something is happening per sec.

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The angular acceleration vector of a 10-kg cylindrical shell of 2-m radius rotating about a central axis subjected to the force f depends on the direction of the force and cannot be determined solely from the given information.

The angular acceleration of an object is defined as the rate of change of its angular velocity and is a vector quantity that points along the axis of rotation. To calculate the angular acceleration vector, we need to know the direction and magnitude of the force applied to the cylindrical shell, as well as its moment of inertia.

The moment of inertia of a cylindrical shell of radius R and mass M rotating about its central axis is given by I = 0.5MR². Once we know the moment of inertia and the net torque acting on the object, we can calculate the angular acceleration vector using the formula τ = Iα, where τ is the net torque and α is the angular acceleration.

Therefore, more information is needed to determine the direction of the angular acceleration vector.

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Answer:

A. Gamma rays

or D. microwaves

Explanation:

correct me if i am wrong

Answer:

Change in velocity

−2−10=−12

Time required is 4 seconds

a=Δv/t

=−12/4

=−3m/s²

Hence,

option C is correct answer.

Answer:

(a) h = 5.1 m

(b) v = 14.13 m/s

Explanation:

(a)

We will use the law of conservation of energy. For this situation it states that:

Loss in Potential Energy of Sphere = Gain in Kinetic Energy of the Sphere

mgh = (1/2)mv²

h = v²/2g   --------------- equation (1)

where,

h = height = ?

v = speed at lowest point = 10 m/s

g = 9.8 m/s²

Therefore,

h = (10 m/s)²/(2)(9.8 m/s²)

h = 5.1 m

(b)

using the equation (1)

h = v²/2g

v = √2gh

where,

v = velocity = ?

g = 9.8 m/s²

h = height = 2(5.1 m) = 10.2 m

Therefore,

v = √[2(9.8 m/s²)(10.2 m)]

v = 14.13 m/s

The height from which the sphere was released is 5.1 m

When the height is doubled, the speed of the sphere becomes 14.14 m/s.

The given parameters:

The height from which the sphere was released is calculated as follows;

\(P.E = K.E\\\\mgh = \frac{1}{2}mv^2\\\\gh = \frac{1}{2}v^2\\\\h = \frac{v^2}{2g}\\\\h = \frac{(10)^2}{2(9.8)} \\\\h = 5.1 \ m\)

When the height is doubled, the speed of the sphere becomes;

\(h = \frac{v^2}{2g} \\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 9.8 \times (2 \times 5.1)} \\\\v = 14.14 \ m/s\)

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Pendulum length must be made for it to keep perfect time of 100 or 0.0167 % or 0.017 % nearly.

Time is the  measure of to  non-stop, consistent change by  in our surroundings, or it is  usually from a specific to  viewpoint.

Total number of seconds in a normal day is 24×60×60 = 86400 seconds

We know that time period of pendulum is

T= 2π √l/g

Then we use fractional error method

∆T/T = 1/2 ( ∆l /l )

Here l is length of pendulum string

So 7.2/86400 = 1/2 ( ∆l/l)

∆l/l = 0.000167

So percentage change is

∆l/l *100 or 0.0167 % or 0.017 % nearly.

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The distance the car would travel when it hit the barrier before coming to a stop is 14.6 m.

The distance travelled by the car before stopping is calculated by applying third kinematic equation as shown.

v² = u² - 2as

where;

when the car stops,  the final velocity will zero, v =  0

0 = u² - 2as

2as = u²

s = u²/2a

The given parameter;

initial velocity of the car, u = 110 km/h = 30.56 m/s

a = 32 m/s²

s = (30.56²) / (2 x 32)

s = 14.6 m

Thus, when the car hits the soft barrier, it will slow down and travel a distance of 14.6 m before coming to rest.

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The third statement (Magnetic forces can raise the trains off the track, reducing frictional forces acting against the train. Less work is needed to propel the train) describes how magnetic forces can be harnessed to increase the speeds at which trains travel.

The scientifically-recognized concept dubbed "magnetic force" dictates that there either exists attractive or repulsive forces created between opposing magnet poles and electrically-charged moving particles--thanks to electromagnetic activity taking place behind-the-scenes. Most notably, all magnets produce an invisible magnetic field with intensified strength around their polar regions.

If two standalone magnets confront one another with opposing polarities visible on either end, then an intrinsic attraction manifests itself due to their respective concentrated fields at those points; though if you flip both magnets around so that their identical polarity ends face each other instead, then repulsion happens thanks to stronger opposing fields.

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The complete question is;

The gravitational force between two objects is ______ proportional to the products of the masses and _______ proportional to the square of the distance between them.

Answer:

First dash is directly

Second dash is inversely

Explanation:

From Newton's law of gravitation the gravitational force is given by the equation;

F = GMm/r²

Where:

F is gravitational force

M and m are two masses representing the two objects

r is the distance between them

G = universal gravitational constant

Thus, if we are to write it in proportion format, we will have;

F ∝ Mm/r²

From this proportion relationship, we can see that the Gravitational force is directly proportional to the products of the two masses and inversely proportional to the square of the distance between them.

Answer:

Explanation:

The gravitational force between two objects is directly  proportional to the products of the masses and  inversely proportional to the square of the distance between them.

To make the total load seen by the generator purely resistive, the reactive component of the load must be canceled out. This can be achieved by adding a reactance with the opposite sign and equal magnitude to that of the reactive component of the load.

Let's assume that the load has a resistance R and a reactance X. The total impedance of the load is then given by Z = R + jX, where j is the imaginary unit.

To cancel out the reactive component of the load, we need to add a reactance -X in series with the load, which gives a total impedance of Z' = R + jX - jX = R. This means that the total load seen by the generator is purely resistive, with no reactive component.

Therefore, to find the value of reactance Qx that needs to be added, we just need to find the magnitude of the reactive component of the load, which is |X|. So, Qx = |X|.

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The physical quantity whose SI unit is m/s is speed or velocity.

Hope that this was helpful :)

Answer:

the more particles packed together the faster it falls

Explanation:

the mass + the 1 constant g-force = the speed without adding air resistance

The inertia of the box and its contents increases if there is an

increase in the mass of the contents of the box, option B.

Inertia is the tendency of an object to resist changes in its motion or state of rest. It is a fundamental concept in physics and is defined as the property of matter by which it retains its velocity (the magnitude and direction of its motion) unless acted upon by an external force.

In other words, an object will remain at rest or continue moving in a straight line with a constant velocity unless acted upon by a force. The magnitude of an object's inertia is directly proportional to its mass.

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Answer:

As newton's 1st Law states that " A body tends to be at rest or in motion until an external force is  applied "

Explanation:

so football will remains at rest until you kick it or stop it with your hands

The electric force acting on the charge will be 2.72 N.The application of the forced occupation of one charge on another charge is known as the electric force.

Force on the particle is defined as the application of the force field of one particle on another particle. It is a type of virtual force.

The given data in the problem is;

q is the charge=  8. 5 × 10–6 C

E is the strength of the electric field =3. 2 × 105 N/C.

F is the electric force=?

The electric force is found by;

\(\rm F = q \times E \\\\ \rm F = 8.5 \times 10^{-6} \times 3.2 \times 10^5 \\\\ \rm F =2.72 \ N\)

Hence the electric force acting on the charge will be 2.72 N.

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