A plane is flying to Minnesota with a velocity of 265.62 km/h, N. The plane encounters a crosswind with a velocity of 56.07 km/h, W. What is the magnitude of the resultant velocity of the plane? (Answer in km/h)

The area under the curve in a PV-diagram represents the work done to the gas. If the area is maximum, the amount of work completed will be the highest. In this scenario, area is maximal when we take path A.

The related changes in volume and pressure in a system are represented by a pressure-volume diagram, also known as a PV diagram or a volume-pressure loop.

Thermodynamics, cardiovascular physiology, respiratory physiology, all frequently use them. The fourth and the most basic state of matter is gas. Its possible for atoms to make up a pure gas.

W = P* change in volume = 1.7 * 1.01 * 5.8 * 105 is the formula for the work completed.

W = 9.96 * 10⁵ J

The question is incomplete. The diagram is missing in the question. It is attached to this answer.

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Answer:

1 and 5

Explanation:

Kinetic energy is the energy that an object possesses due to its motion. Since the pendulum has 0 velocity at points 1 and 5, and it is at those points that the pendulum is furthest from its equilibrium position, we say that it has no kinetic energy and maximum potential energy.

Answer:

Explanation:

Given:

Q =  30J   (The system did not prepare energy, but allocated)

W =  + 50 J  (System operation)

__________________

ΔU - ? (Change in internal energy)

ΔU = Q - W =  30 - (50)  = - 20J

Answer:

Two coins.

Explanation:

place the at the sharp point

Sports shoes provide more than just a protective cover for the feet. They should provide support for the ways the feet and ankles will move and be adaptable to the terrain.

The right footwear must be designed specifically for the movements of one's sport, whether basketball or other forms of exercise. Elements like shock absorption, ankle support, balance and stability are very essential for better performance.

Different kind of shoes are suited for certain sports. If you are playing a particular sport for more than 2 days a week then, choose a pair of shoes suitable for that particular sport to protect yourself from injury.

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Light is bent when it travels through a diamond. If the light rays is 12° and the incidence angle is 30°, the refraction is 2.4.

Light waves alter in speed as they pass across the boundary that separates two materials with distinct densities, such as air and glass. Refraction is the term for how they change direction as a result.

The rate at which light will change as it travels through one medium before entering another. As a result, refraction happens. The change in medium has an impact on how light passes through air and into water.

Briefing:

Snell's law states:

n₁sinθ₁ = n₂sinθ₂

n₂ = sinθ₁/ sinθ₂

n₂ = sin(30)/sin(12

n₂ = 2.4

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The zebra population is likely increasing because there is an abundance of food available in the savannah.

This is likely putting pressure on the small animal populations in the Red Gra, as zebra are competing for the same food sources.

To help prevent the small animal populations from going extinct, we could establish a protected conservation area for the small animals and limit the number of zebra that can graze in the area.

Additionally, we could introduce more vegetation to the savannah to provide more food sources for both the zebra and the small animals. This could help reduce competition between the two groups and create a more sustainable environment for all species.

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Two real life examples of increasing friction are: tires of car are made rough to increase the friction and when a ground becomes slippery after rain then it is made rough by using sand to increase friction.

Friction can be increased by : making the surfaces rough, pressing the surfaces harder against each other, increasing normal force, using sliding motion rather than rolling motion and increasing contact surface area.

When we walk on the ground or the floor then  it is the frictional force only that is responsible for holding our feet to the ground. On slippery surfaces or ice, the friction is less, therefore we tend to slip on these surfaces.

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Answer:

Use the own word element

Explanation:

Dont choose a decision that is too personal for others to read.

In the electric field, the like charges repel each other, and the unlike charges attract each other, whereas in a magnetic field the like poles repel each other and the unlike poles attract each other.

Electric field is a region or space around a conductor where electric force can be felt. While magnetic field is the region or space around a bar magnet where magnetic force can be felt. Electric and magnetic force are both force field and they are both vector field.

In electric field, like charges repel and unlike charges attract similarly like poles repel and unlike poles attract in magnetic field.

One difference between magnetic poles and electric charges is that magnetic pole always appear on a magnet as north and south pole but a single entity of charge can exist.

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The velocity of the balls after collision is 0.33m/s and the loss in kinetic energy is 0.126J

Inelastic collision occur when only the momentum is conserved but there is loss in kinetic Energy.

This means that the momentum before collision is equal to the momentum after collision.

therefore m1v1+(-m2v2) = (m1+m2)v . where v is the common velocity after collision. The negative sign shows that they are moving in opposite direction.

m1= 30g = 0.03kg

m2 = 15g = 0.015kg

v1 = 2m/s

v2 = 3m/s

0.03× 2- 0.015× 3= (0.03+0.015)v

0.06-0.045= 0.045v

0.015= 0.045v

divide both sides by 0.045

v = 0.015/0.045

v= 0.33m/s

the kinetic energy before collision = ½×0.03×2²+½×0.015×3²

= 0.06+0.068= 0.128J

kinetic energy after collision = ½× 0.045× 0.33² = 0.0025J

loss in kinetic energy= 0.128J -0.0025J = 0.126J

therefore the The velocity of the balls after collision is 0.33m/s and the loss in kinetic energy is 0.126J

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The correct statements are Stony meteorites come from the outer layers of larger objects and Most meteors come from comets.

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The mass of the soft drink is 3.05 kg.

The heat energy must be removed in order to cool the soft drink is 227,835 J.

The mass of the soft drink is calculated by applying the following formula.

m = ρ V

where;

m =  1015 kg/m³ x 0.003 m³

m = 3.05 kg

The heat energy must be removed in order to cool the soft drink is calculated as;

Q = mcΔθ

where;

Q = mcΔθ

Q = 3.05 x 4150 x (23 - 5)

Q = 227,835 J

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The student should continue investigation as previous ones but increase the number of magnets.

In this investigation,

The rotation rate depends on voltage , number of loops and number of magnets.

In investigation 1 , voltage is changed keeping others constant.

In investigation 2 , number of loops is changed.

So in Investigation 3 , number of magnets should be changed.

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Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the frequency of wave is 25 Hz.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave

speed of wave= distance travelled by wave ÷ time taken by the wave

speed of wave=  5,000m/s

distance travelled by wave = wavelength of wave = 200 meters

Substituting all the given values in the above equation, we get

5,000m/s=  200 meters ÷ time taken by the wave

time taken by the wave= 0.04 s

Frequency = 1 ÷time taken by the wave

                  = 1÷0.04

                  =25 Hz

Therefore, the frequency of wave is 25 Hz.

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The rate at which the skiers accelerate is 2.7 m/s.

What is force?

A force applied to a body can change the magnitude of the momentum or its direction or both. Newton's second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and an (acceleration) are both vector quantities.

What is Ma in force?
Newton's second law is often stated as F=ma, which means the force (F) acting on an object is equal to the mass (m) of the object times its acceleration (a). This means the more mass an object has, the more force you need to accelerate it. And the greater the force, the greater the object's acceleration.

[tex]F=ma[/tex]

Given : m=48+61, F=290N

[tex]290=(48+61)*a\\a=290/109\\a=2.7 m/s^{2}[/tex]

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Answer:

Build a fire

Explanation:

The elastic potential energy will be =

For a)  7.5J

For d)  1687.5J

For g)  0.675J

For b) 11.718J

For e) 1267.5J

For h) 1080J

For c)  73507.5J

For f)  10.8J

For i)  18750J

According to the formula for calculating elastic potential energy,

Elastic potential energy (u) = 1/2 x spring constant x [tex](amount of extension)^{2}[/tex]

Let was calculate the value of 1/2 x spring constant to simplify the equation = 1/2 x 15 = 7.5

for a) 7.5 x [tex]1^{2}[/tex] = 7.5J

for d) 7.5 x [tex]15^{2}[/tex] = 1687.5J

for g) 7.5 x [tex]0.3^{2}[/tex] = 0.675J

for b) 7.5 x [tex]1.25^{2}[/tex] = 11.718J

for e) 7.5 x [tex]13^{2}[/tex] = 1267.5J

for h) 7.5 x [tex]12^{2}[/tex] = 1080J

for c) 7.5 x [tex]99^{2}[/tex] = 73507.5J

for f) 7.5 x [tex]1.2^{2}[/tex] = 10.8J

for i) 7.5 x [tex]50^{2}[/tex] = 18750J

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When fundamental frequency, length and tension is given then the wire's mass per unit length is 9.23 * 10 ^-3 g/m.

The fundamental frequency is defined as the lowest frequency of a periodic waveform. Fundamental frequency is defined as the average number of oscillations per second and is expressed in Hertz.

Given ; length , l= 0.54m Tension, T = 1373N

Frequency , f = 357 Hz

f= (1/2l)*(√T/m)

m = T/(4l² f²)

= 1373/(2*0.54² * 357²)

m= 9.23 * 10 ^-3 g/m

The wire's mass per unit length in grams/meter is 9.23 * 10 ^-3 g/m.

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The mass defect of Fe -56 atom with a mass of 55.921 amu and having 26 protons and 30 neutrons is  0.52823 amu.

Mass defect is the difference in the original mass of the atom from the mass added by the mass of protons and neutrons. Let Mp be the mass of protons and Mn that of neutrons and mass of electrons is negligible.

mass defect Δ M = [Z Mp + (A-Z) Mn )] - Matom

Given mass of protons Mp = 1.00728 amu

Mn = 1.008665 amu.

Number of protons = 26 and neutrons = 30

Then, Δ M = [(26 ×1.00728 amu) + (30 ×1.008665 amu )] - 55.921 amu

                 =  0.52823 amu.

Hence, the mass defect of Fe- 56 is  0.52823 amu.

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These are the physical quantities.

a physical quantity is any of the physical property of to a  material or system that can be quantified, that is, can be a  measured using numbers. A physical quantity can be the  expressed as a value of the  which is the algebraic of the multiplication of a numerical value and a unit.

We have to talk about the correlations between the quantities. There's an additional term called acceleration. Talk about how fast you can get. The largest charities are referred to as the term and largest charities are referred to as the term  and largest charities are No for food and physical quantities. We have something for rotation. There is a physical quantity. We have physical quantity now. We have a moment of inertia that can be used to work for work or work as well. I will call you either by talk or rotation. We have a kind of technology that rotates for linear momentum and P. This is a moment for impulse. We have an impulse if it's for something.

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0.265m/sec is the acceleration of the block when it is pulled with force of 5.3n having mass 2kg with friction 0.9N

F=ma, Where as F= force m= mass a= acceleration f = friction

F=5.3N  m=2kg a=? f=0.9N

The net force applied on the block is original force - friction force which is

(F-Ff)=ma

5.3- (5.3)(0.9)= 2x a

a= 0.265m/sec

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When a light wave hits the surface of a pool, some of the light will be reflected off the surface, while the rest will be absorbed by the water and pass into the pool. The angle at which the light hits the surface will determine how much light is reflected and how much is absorbed. If the light hits the surface at a perpendicular angle (90 degrees), most of the light will be reflected, resulting in a strong, sharp reflection on the surface of the pool. If the light hits the surface at a shallow angle (less than 90 degrees), more of the light will be absorbed by the water, resulting in a weaker or distorted reflection on the surface.

The light that is absorbed by the water will continue to travel through the water, but its intensity will decrease as it travels. This is due to a process called absorption, where the water molecules absorb the energy from the light and convert it into heat. The deeper the light travels into the pool, the more the water will absorb the light, and the dimmer the light will become.

Additionally, the light that enters the pool may be scattered by particles or other objects in the water, which can cause the light to spread out and become less focused. This can cause the light to appear blurry or distorted when viewed from different angles. The color of the light may also be affected by the water, as different colors of light have different wavelengths and are absorbed by the water at different rates. This can cause the light to appear different colors when viewed from different depths in the pool.

As per the given statement, If there is to be no relative motion between the train and the edge of the platform the train should  move equally as compared to the rim speed of the rotating platform.

The motion of one moving body in respect to another fix body is termed as relative motion.

The velocity of one object in respect to the other one is know as their relative velocity. It is the time rate change of velocity of the first object with respect to the observer or the another object

Relative velocity of train to rotating platform = 0

hence,

as per the equation,

⇒the relative velocity(v)= vt-vp

⇒v relative=0

⇒0=vt-vp

⇒vt=vp

Hence, the velocity of train should be equal to the rim speed of rotating platform.

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The cutoff wavelength and cutoff frequency of the photoelectric effect is  4.782 ×10⁻¹⁴ m and 0.627 × 10⁻⁶s⁻¹ respectively.

We are given that,

Work function =  Φ = 4.14ev

The work function relation can be given by the formula ,

Φ = hc/λ

Where,  Φ is the work function , h is the plank's constant , c is the speed of light , λ is the wavelength of the light,

Putting the values in the above equation to get wavelength of light,

λ = hc/ Φ

λ  = [(6.62607015 × 10⁻³⁴J-S)(3 × 10⁸m/s)]/ 4.14ev

λ = 4.782 ×10⁻¹⁴ m

The frequency can be calculated by the formula ,

ν = c /λ

ν = (3 × 10⁸m/s)/(4.782 ×10⁻¹⁴ m)

ν =0.627 × 10⁻⁶s⁻¹

Therefore ,the cutoff wavelength and cutoff frequency of the photoelectric effect would be  4.782 ×10⁻¹⁴ m and 0.627 × 10⁻⁶s⁻¹ respectively.

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The distance that a point on the edge of the wheel would have traveled in 6.8 seconds of time is 19.85 meters.

The rate by which the body changes its angle with respect to the time is called the angular velocity of a body.

Given, wheel 31 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.8 s.

Given ω0 = 240,

ω0 = 240 (0.1047)

= 25.1 rad/s

α2 = 360 (0.1047)

= 37.7 rad/s

The angular acceleration is given as,

a = Δω/t

= ω - ω0/t

= 37.7 - 25.1/6.8

So, a = 1.85 rad/s²

AS we know, Ф= ω0t + 1/2 a t²

= 25.1 * (6.8) + 0.5 * (1.85) * 6.8²

= 85.34 + 42.77

Ф = 128.11 rad

length of travel, l = Ф *d/2

=  128.11  * 0.31/2

l = 19.85 m

Thus, distance that a point on the edge of the wheel would have traveled  is 19.85 meters.

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Answer:

To add two non-collinear vectors, you first need to draw them on a coordinate plane so that their tails are at the same point. Then, you can use the "tip-to-tail" method to add the vectors. This involves drawing a vector from the tail of the first vector to the tip of the second vector, and this new vector is the sum of the two original vectors.

For example, if you have two non-collinear vectors, A and B, and you want to find their sum, you would first draw them on a coordinate plane so that their tails are at the same point. Then, you would draw a vector from the tail of vector A to the tip of vector B. This new vector, which is the sum of vectors A and B, is the result of adding the two vectors.

To calculate the sum of the vectors using the tip-to-tail method, you would simply add the x and y components of the two vectors separately. For example, if vector A has an x component of 3 and a y component of 4, and vector B has an x component of 5 and a y component of 6, the sum of the two vectors would be a vector with an x component of 8 and a y component of 10.

It's important to note that the sum of two non-collinear vectors is not necessarily a non-collinear vector. The sum of two non-collinear vectors can be a non-collinear vector, a collinear vector, or a zero vector (if the two original vectors are opposites of each other).

Technology is the universe of tools, means, and methods through which we interact with our environment. [TRUE]

Apart from being divided into several types, technology will then provide many benefits in all fields.

1. Easy to receive information

The first positive side of technological development is the ease of receiving information, both locally and internationally. Unlike in the past, in this modern era, we don't have to bother buying newspapers.

2. Easy to communicate

With the messaging application that can send messages, both voice messages and text messages as well as telephone, which will then make it easier to communicate. Unlike the past, communication still has to be through letters and you have to send it to the post office. This letter cannot directly reach the recipient of the letter. It also requires quite expensive costs and takes a long time.

3. More Practical Shopping

In the past we had to go to the market or other shopping places and it took a long time. It's different from now, you can simply order various needs just by using an online shopping application. Then pay for it and wait for the order to arrive at home without the hassle of leaving the house.

4. Learning becomes easier

In the past we had to buy thick books and cost a lot. Right now you only need to buy ebooks, although not a few are paid, but there are many e-books that you can get for free. Besides being able to read books easily, the rapid development of technology will then facilitate the teaching and learning process. Especially during a pandemic like this. The benefits of this technological development are also very necessary for students and teachers who teach.

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If a full moon is visible on November 2, then waning crescent would be the next phase on November 13. If 21 October has waning crescent moon then 29 would have waxing crescent moon.

How long are moon phases?

Moon phases vary in length, depending on the position of the Moon relative to Earth. During a single orbit of the Moon, it passes through eight distinct phases, each lasting an average of three and a half days. The phases in order are the New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter and Waning Crescent. During a lunar cycle, the Moon passes through each of these phases in the same order, taking an average of 29 days, 12 hours, and 44 minutes to complete the cycle.

After 11 days a full moon transitions to a waxing crescent moon. After 8 days a waxing crescent moon goes from waning to waxing crescent moon.

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When a wheel has eight spokes and radius and angular velocity is given then the minimum speed that the arrow must have is 3.87 m/sec.

A bar or rod that connects the center of a wheel to its rim is known as spoke. The main purpose of spokes is to support structure of the wheel.

Given: radius = 29.5cm  and angular velocity = 2.14 rev/sec

length of arrow = 22.5cm

Angle between spokes = 2π/8 = π/4

Time taken to reach adjacent spoke =Ф/ω

= π/4/ 2.15 (2π)

= 0.058 sec

For the arrow to pass through spokes, time should be less than 0.058 sec.

Then, minimum speed = 22.5/100/0.058

= 3.87 m/sec

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