A fighter plane flying at constant speed
280 m/s and constant altitude 5200 m. makes a turn of curvature radius 1100 m.
On the ground, the plane’s pilot weighs
(63 kg) (9.8 m/s^2) = 617.4 N.
What is his/her apparent weight during the
plane’s turn?
Answer in units of N.

Answer:

1) an observer in B 'sees the two simultaneous events

2)observer B sees that the events are not simultaneous

3)  Δt = Δt₀ /√ (1 + v²/c²)

Explanation:

This is an exercise in simultaneity in special relativity. Let us remember that the speed of light is the same in all inertial systems

1) The events are at rest in the reference system S ', so as they advance at the speed of light which is constant, so it takes them the same time to arrive at the observation point B' which is at the point middle of the two events

Consequently an observer in B 'sees the two simultaneous events

2) For an observer B in system S that is fixed on the Earth, see that the event in A and B occur at the same instant, but the event in A must travel a smaller distance and the event in B must travel a greater distance since the system S 'moves with velocity + v. Therefore, since the velocity is constant, the event that travels the shortest distance is seen first.

Consequently observer B sees that the events are not simultaneous

3) let's calculate the times for each event

        Δt = Δt₀ /√ (1 + v²/c²)

where t₀ is the time in the system S' which is at rest for the events

Answer:

True

Explanation:

The kinetic energy of an object is the energy that it possesses due to its movement or motion.

True, the amount of kinetic energy an object has depends on its mass and its speed.

The kinetic energy of a moving object is directly proportional to the square of its velocity and directly proportional to its mass.

The statement that is not correct is "Greenhouse gases absorb energy mainly from visible light reflected off the earth's surface," which is in the last option or option D, as the greenhouse gases actually absorb and re-emit infrared radiation, not visible light.

Greenhouse gases absorb IR radiation because the bonds between their atoms and molecules can vibrate in response to electromagnetic radiation that causes the molecules to gain energy and vibrate more vigorously, which generates heat, and the absorbed energy is then re-emitted in all directions, including back towards the Earth's surface, creating a warming effect.

Hence, the statement that is not correct is "Greenhouse gases absorb energy mainly from visible light reflected off the earth's surface," which is in the last option that is option D.

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The question is incomplete, the complete question is below

All of the following are correct except:

A)The earth's surface absorbs visible light and gives off infrared energy

B)most short wave radiation that enters the atmosphere doesn't get to the earth's surface as it is either reflected, scattered, or absorbed by the atmosphere

C)Light that reaches the earth's surface is mainly visible light

D)Greenhouse gases absorbs energy mainly from visible light reflected off the earth's surface

In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.

This relationship is described by the equation for the generated emf in a DC generator:

Emf = Φ * N * A * Z / 60

Where:

Emf is the generated electromotive force (in volts),

Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),

N is the number of turns in the armature winding,

A is the effective area of the armature coil (in square meters),

Z is the total number of armature conductors, and

60 is a constant representing the conversion from seconds to minutes.

From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.

The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.

The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.

Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.

By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.

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An electric motor converts electric energy into mechanical energy. So, the right option is C.

In contrast to an electric generator, an electric motor transforms electrical energy into mechanical energy.

They function according to electromagnetism's principles, which demonstrate that a magnetic field's electric current exerts a force.

In the magnetic field, this force produces a torque that spins a loop of wire, causing the motor to function.

Fans, power tools, appliances, electric vehicles, and hybrid vehicles are just a few examples of the many uses for electric motors.

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Answer:

To determine the minimum blade length, add 1" to the workpiece thickness. One type of material, and some materials can be cut by more than one type of blade. No matter the material, there's likely a jigsaw blade designed specifically for. Armed with the right blade, follow these pointers to make your work go (and cut) .

Explanation:

Explanation:

lol ....you are right.......

The pattern of lines of force around two positive charges separated from each other demonstrates the repulsive nature of like charges and the direction and strength of the electric field between them.

When two positive charges are separated from each other, the lines of force (also known as electric field lines) originate from one positive charge and terminate on the other positive charge. The lines of force follow a pattern that reflects the repulsion between the positive charges.

Here's a verbal description of the pattern:

From each positive charge, the lines of force radiate outward in all directions.

The lines of force are evenly spaced and radially symmetric around each charge, indicating that the electric field strength is the same at all points along a given line.

As the lines of force move away from each charge, they curve away from each other, reflecting the repulsion between the positive charges.

The density of lines of force is higher near the charges and decreases as they move further apart.

The lines of force never cross each other, maintaining their continuous and unbroken nature.

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The particles that are considered nucleons are neutrons and protons. Option B.

Nucleons are particles found in the nucleus of an atom, specifically protons and neutrons.

Protons have a positive charge, while neutrons have no charge, and together they make up the majority of the mass of an atom.

Electrons, on the other hand, are much smaller than protons and neutrons, and they orbit around the nucleus in shells. Since they are not found in the nucleus, electrons are not considered nucleons.

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Answer:

a) the velocity increases then decreases.

A pilot light is typically wired in series with a thermostat to indicate whether the fan is moving air

We know that the pilot is such a person that have been trained so as to be able to fly the air plane. This is the individual that can be able to control a plane and there are tools that the pilot would have to use to do his job.

Now we know that the pilot light is one of the tools that the pilot can use to be able to use in the discharge of his job when he is flying the air craft that is moving and it has to be in series with the thermostat.

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The elastic potential energy stored in the spring is 0.375 J.

The formula for elastic potential energy is:

E = 1/2 * k * x^2

where:

* E is the elastic potential energy in Joules

* k is the spring constant in N/m

* x is the distance the spring is stretched or compressed from its equilibrium position in meters

In this problem, we have:

* k = 3 N/m

* x = 0.5 m (50 cm)

Substituting these values into the formula, we get:

E = 1/2 * 3 * 0.5^2 = 0.375 J

Therefore, the elastic potential energy stored in the spring is 0.375 J.

For a given length of the pendulum and acceleration of the cart, the maximum displacement angle can be determined using the above formulas.

What is Acceleration?

Acceleration can be positive or negative depending on the direction of the change in velocity. If an object is speeding up, the acceleration is positive, while if it is slowing down, the acceleration is negative.

(1) The maximum displacement angle observed in a pendulum experiment can be determined by the length of the pendulum and the acceleration due to gravity. According to the theory of simple harmonic motion, the period of a pendulum is directly proportional to the square root of its length and inversely proportional to the square root of the acceleration due to gravity.

The formula for the period of a pendulum is:

T = 2π * sqrt(L/g)

where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity (approximately 9.8 m/\(s^{2}\)).

For a given length of the pendulum, the maximum displacement angle occurs when the pendulum is at the highest point in its swing (i.e., when its velocity is momentarily zero). At this point, all of the energy of the pendulum is potential energy (i.e., gravitational potential energy), and the angle is known as the maximum displacement angle or the amplitude.

The maximum displacement angle (θ) can be calculated using the formula:

θ = \(sin^{^-1(a/g)}\)

where a is the acceleration of the cart.

Therefore, for a given length of the pendulum and acceleration of the cart, the maximum displacement angle can be determined using the above formulas.

(2) If the rod is hung 8 cm from its endpoint instead of 28 cm, the length of the pendulum (L) would be 20 cm. Using the same formula as above, the period of the pendulum would be:

T = 2π * sqrt(0.2/9.8) = 0.898 seconds

The maximum displacement angle can be calculated using the same formula as above:

θ = sin^\(sin^{^-1(a/g)}\)

where a is the acceleration of the cart.

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The average force is equal to the area under the curve of force versus time divided by the time of contact between the hammer and the nail.

The equation can be used to determine the average force the nail applies to the hammer.

\(F = \frac{mv}{t}\), where m is the hammer's mass, v is its speed, and t is the time at which it made impact with the nail. The average force in this situation is given by:

\(F = \frac{(2.5 kg)(6 m/s - 2.0 m/s)}{(0.002 s)}\\ F= 4500 N.\)

To solve this problem using force vs. time, you would need to plot a graph of force versus time, with the time of contact between the hammer and the nail representing the x-axis and the force exerted on the hammer by the nail representing the y-axis. The force exerted on the hammer increases from 0 to 4500 N as the hammer moves from rest to its maximum velocity. The average force is equal to the area under the curve of force versus time divided by the time of contact between the hammer and the nail.

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Answer:

5 V

Explanation:

V = IR

V = .25A * 20 Ohms = 5 V

The current and potential difference in the lumped element model of electrical circuits are dealt with by Kirchhoff's circuit laws, which are two equalities. German scientist Gustav Kirchhoff published the first account of them in 1845. This was done before James Clerk Maxwell and generalized Georg Ohm's work.

Because the sum of the currents entering and leaving the junction is equal, Kirchhoff's first law is based on the conservation of charge. The algebraic sum of potential drops in a closed circuit must equal zero, according to Kirchhoff's second law. Therefore, it is based on energy conservation.

A stream of charged particles—such as electrons or ions—moving through a conductor for electricity or into empty space is known as an electric current. It is determined by measuring the net rate of electric charge flow through a surface or into a control volume.

The amount of resistance in an electrical circuit represents the resistance to current flow. The Greek letter omega (Ω), which stands for resistance, represents ohms.

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Answer:

5 units to the left

Explanation:

I had the same question :)

Answer:

P = density (p) * g * h

P = 1000  kg/m^3 * 9.8 m/s^2 * 40 m = 392,000 N/m^2

since kg m / s^2 = Newtons

The average pressure is 1/2 (pressure at 0m +  pressure 80 m) for liquid of uniform density

Amplitude is one of these qualities. The largest movement of a particle on the medium from its rest position is referred to as a wave's amplitude.

Wavelength:

The wavelength of the wave is the distance covered by it throughout a whole oscillation.

A metre is the wavelength's SI unit (m).

Frequency:

The frequency of a wave is the number of oscillations it performs in a second.

It's calibrated in hertz (Hz).

time frame

The amplitude of the wave is the length of time it takes for one oscillation to complete.

Time is measured in S amplitude:

The wave's amplitude is defined as its largest departure from its mean or equilibrium position.

A measure of amplitude

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Answer:

See the answers below.

Explanation:

Momentum is defined as the product of mass by velocity, in this way we have the following equation.

\(P=m*v\)

where:

P = momemtum [kg*m/s]

m = mass = 1500 [kg]

v = velocity = 6 [m/s]

\(P = 1500*6\\P=9000 [kg*m/s]\)

Now we have to calculate the momentum of the plane when it travels at 30 [m/s].

\(P_{airplane}=m_{plane}*v_{plane}\\P_{airplane}=7800*30\\P_{airplane}=234000[kg*m/s]\)

Now this same momentum must be conserved, in such a way that the mass is increased but the velocity must decrease for the momentum to be conserved.

\(P=m_{new}*v_{new}\\234000=(7800+800)*v_{new}\\234000=8600*v_{new}\\v_{new}=27.2[m/s]\)

Answer:

1.  9000 kg-m/s

2.  27.2 m/s

Given:

V1= 88 ml

P1= 1 atm

T1= 25°C= 298.15 K

STP conditions:

P2= 1atm

T2= 273.15 K

Apply :

Replacing:

V2= 80.62 ml

The force(s) that would operate on the box  are ;

When a force is applied to move the box laterally across the surface, the kinetic force acts between the box and the surface. The frictional force force is the force between the box and the surface when the object stops/rests.

Both kinetic and static forces are frictional forces, although they operate on the box at different periods. (For example, static force operates when the box comes to a stop/rest, but kinetic force acts when the box is in motion between the box and the surface.)

As a result, we may deduce that the forces acting on the box are frictional forces and applied forces.

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Answer:

1. S = d/t S = speed D = distance traveled T= time elapsed

Explanation:

i can answer more in a minute sorry!!

Explanation:

To determine the effort needed to lift a load of 200N, given a velocity ratio of 5 and an efficiency of 80%, we can use the formula:

Efficiency = (Output Work / Input Work) * 100

Efficiency can also be calculated as the ratio of the output force to the input force. In this case, the output force is the load being lifted (200N), and the input force is the effort required.

Given that the velocity ratio is 5, it means that for every 5 units of distance the effort moves, the load moves 1 unit of distance. This implies that the effort is exerted over a greater distance than the load.

Let's denote the effort force as "E" and the distance moved by the effort as "dE." Similarly, the load force is "L," and the distance moved by the load is "dL."

Using the velocity ratio, we have the following relationship:

dE / dL = 5

Now, we can calculate the input work (Wi) and the output work (Wo):

Input Work (Wi) = Effort (E) * Distance moved by the effort (dE)

Output Work (Wo) = Load (L) * Distance moved by the load (dL)

Given that the efficiency is 80%, we can rewrite the formula for efficiency as:

0.80 = (Wo / Wi) * 100

Now, let's solve for the effort (E) using the given values:

Load (L) = 200N

Efficiency = 0.80

Velocity Ratio = 5

First, calculate the output work (Wo):

Wo = Load (L) * Distance moved by the load (dL)

Since the velocity ratio is 5, the distance moved by the load (dL) will be 1/5 of the distance moved by the effort (dE):

dL = (1/5) * dE

Wo = L * (1/5) * dE

Wo = 200N * (1/5) * dE

Wo = 40N * dE

Next, calculate the input work (Wi):

Wi = Effort (E) * Distance moved by the effort (dE)

Wi = E * dE

Now, substitute the values into the efficiency formula:

0.80 = (Wo / Wi) * 100

0.80 = (40N * dE) / (E * dE) * 100

0.80 = 40 / E * 100

0.80 * E = 40

E = 40 / 0.80

E = 50N

Therefore, the effort needed to lift a load of 200N with a velocity ratio of 5 and an efficiency of 80% is 50N.

Block A is moving at around speed is 7.91 m/s right before it hits the ground.

The ball's parabolic motion causes it to move at a speed of 26.3 m/s right before it strikes the ground, which is faster than its straight-downfall velocity of 17.1 m/s.

Now, let's calculate the system's potential energy when collar C is removed:

PE = mgh

where

m = 4 kg (mass of block A)

g = 9.81 m/s² (acceleration due to gravity) (acceleration due to gravity)

h = 0.6 m (height that block A is raised)

PE = 4 kg × 9.81 m/s² × 0.6 m

PE = 23.54 J

Let's now find the kinetic energy of the system just before block A hits the ground:

KE = (1/2) × m × v²

where

m = 4 kg (mass of block A)

v = the block A's speed right before impact with the ground.

KE = (1/2) × m_A × v² + (1/2) × m_B × v²

where

m_A = 4 kg (mass of block A)

m_B = 5 kg (mass of block B)

d_total = d_A + d_B

where

d_A = 0.6 m (distance that block A moves)

d_B = 1 m (distance that block B moves)

d_total = 0.6 m + 1 m

d_total = 1.6 m

PE = KE

mgh = (1/2) × m_A × v² + (1/2) × m_B × v²

Substituting the known values, we get:

4 kg × 9.81 m/s² × 0.6 m = (1/2) × 4 kg × v² + (1/2) × 5 kg × v²

14112 J = (4.5 kg) × (1/2) × v²

v² = 62.693 m²/s²

v = 7.91 m/s.

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Answer:

2.5 m/s^2

Explanation:

Given the following data;

Force = 80N

Mass = 32kg

To find acceleration;

Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

\( F = ma\)

Where;

F represents force.

m represents the mass of an object.

a represents acceleration.

Making acceleration (a) the subject, we have;

\(Acceleration (a) = \frac{F}{m}\)

Substituting into the equation;

\(Acceleration (a) = \frac{80}{32}\)

Acceleration = 2.5m/s²

Answer:

b. 433 N

Explanation:

From Newton's law of universal gravitation,

F = \(\frac{GMm}{r^{2} }\)  ........... 1

where: F is the force of attraction, G is Newton's universal gravitation constant, M is the mass of massive object, m is the mass of the other object and r is the radius.

Also, from Newton's second law,

F = mg ............ 2

Thus,

mg = \(\frac{GMm}{r^{2} }\)

g = \(\frac{GM}{r^{2} }\)................  3

Equation 3 can be used to determine the gravitational force on Titan.

Given that: G = 6.6743 x \(10^{-11}\) \(Nm^{2}kg^{-2}\), M (mass of Titan) = 1.35 x 10^23 kg, and

r = \(\frac{diameter of Titan}{2}\)

 = \(\frac{5150}{2}\)

 = 2575 km

r = 2575 000 m

g = \(\frac{(6.6743*10^{-11}*1.35*10^{23} }{(2575 000)^{2} }\)

  = \(\frac{9.010305*10^{12} }{6.630625*10^{12} }\)

  = 1.3589

g = 1.36 m/\(s^{2}\)

The acceleration due to gravity, g, on Titan's surface is 1.36 m/\(s^{2}\).

On the earth,

weight = mass x acceleration due to gravity

3120 = m x 9.81

m = \(\frac{3120}{9.81}\)

   = 318.0428135

The mass of the probe is 318 kg.

So that its weight on the surface of Titan = m x g

                                                                    = 318 x 1.36

                                                             = 432.5 N

The weight of the probe on the surface of Titan is 433 N.