the picture tube in a television uses magnetic deflection coils rather than electric deflection plates. suppose an electron beam is accelerated through a 55.0 -kv potential difference and then through a region of uniform magnetic field 1.00 cm wide. the screen is located 6.0 cm from the center of the coils and is 60.0 cm wide. when the field is turned off, the electron beam hits the center of the screen. what field magnitude is necessary to deflect the beam to the side of the screen? ignore relativistic corrections.

Answer:

Explanation:

Given:

M = 1 260 kg

V₀ = 26.9 m/s

V = 0 m/s

Δt = 9.36 s

___________

L - ?

1)

Vehicle acceleration:

a = (V - V₀) / Δt )  = (0 - 26.9) / 9.36  ≈ - 2.87 m/s²

2)

Braking distance of the car:

L = (V² - V₀²) / (2·a)

L = ( 0² - 26.9²) / (2·(-2.87)) ≈ 121 m

Rachel is correct because during the collision, each body exerts an equal and opposite force on the other, the forces act at equal time intervals, and the law of momentum and vector equation represents conservation for an isolated system.

The law of momentum conservation states that within an isolated system in which two or more bodies act on each other (collision of objects), the total momentum remains constant because momentum is neither created nor destroyed, but only changed by the application of external forces as described by Newton's laws of motion. Furthermore, the law states that the force acts on both objects at the same time and that the forces between the objects are equal.

That is stated by the law of momentum conservation. The total momentum of two or more bodies acting on each other in an isolated system remains constant unless an external force is applied.

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Answer:

100

Explanation:

the final velocity is 10.50 m/s.

calculation:

time t= 12.3 s

distance s= 200u=0

equations are,  v² = u² + 2as,

s = ut + ½at²

200= 0*12.3 + 1/2*a*

a=2.77

v² = u² + 2as,

v²= 0 + 2*2.77*200

v=10.50 m/s

A particle or object's movement with respect to time is expressed vectorially as velocity. The meter per second (m/s), usually referred to as speed, is the accepted unit of velocity magnitude.

An object's position and speed are mostly determined by its velocity. It calculates the distance an object travels in a specific length of time. The distance an object travels in a given amount of time is its velocity.

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Look for radiation at long wavelengths is the best technique for learning about more distant region of our galaxy disk.

There are few stars visible if we stare perpendicular to the disk. More stars can be seen when looking from Earth towards the galactic center. This suggests a disk shape. The dust in galaxies is made up of microscopic grains of carbon, silicon, iron, aluminum, and other heavier elements. The Milky Way contains a lot of carbonaceous dust, which is quite rare in other galaxies.

The stars on the disk all orbit the galactic center in roughly the same place and direction. Halo and bulge stars likewise orbit the center of the galaxy, but their orbits are randomly inclined to the galaxy's disk. The orbital velocity of stars allows us to calculate the distribution of mass in our galaxy.

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1000 kg is the mass of the ball.

To find the volume of a substance, divide its mass by its density (mass/density = volume). Consistent measurement units should always be used. If the density is specified in grams per cubic centimeter, for instance, then calculate the mass in grams and provide the volume in cubic centimeters.

From mass and volume measurements, the densities of brass and aluminum will be determined. Three different methods will be used to calculate volumes: geometrically (by measuring lengths); via water displacement; and via pycnometry.

The density calculation formula is p = m/V.

m = p*v

m = 100kg

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The wheel's average net torque over the course of interval T is  Iωf/T (option-D).

An object's rotational velocity is altered by net torque. The velocity of an object is affected by net force. When pushed, the block moves horizontally and, assuming low friction, does not rotate.

Given ,

The wheel's initial angular speed, [tex]w_{i}[/tex] = 0

Final wheel angular velocity, [tex]w_{f}[/tex] = [tex]w_{f}[/tex]

The amount of time required to increase the wheel's angular speed t = T

The wheel's angular acceleration,

α = [tex]w_{f}[/tex] - [tex]w_{i}[/tex]/T

α = [tex]w_{f}[/tex] - 0/T

α = [tex]w_{f}[/tex]/T

Newton's Second Law of Rotation states:

The moment of inertia times the angular acceleration are equal when multiple torques are acting on a rigid body about a fixed axis.

τ = Iα

An expression for angular acceleration is:

α = (ωf - ωi) / T

α = ωf/T

As an alternative to the second law:

τ = Iωf/T.

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The speed with which the rock A, B and C  which are thrown same initial speed and same mass hit the ground is equal for all the rocks.

Let us consider the initial velocity be 1 m / s and the height of the cliff to be 10 m.

For the rock A which is thrown vertically downward,

v² = u² + 2 a s

v² = 1 + ( 2 * 9.8 * 10 )

v² = 197 m / s

v = 14 m / s

For rock B which is thrown horizontally,

vx = 1 m / s

v² = u² + 2 a s

v² = 0 + ( 2 * 9.8 * 10 )

v = 14 m / s

vy = 14 m / s

v = √ vx² + vy²

v = √ 1 + 14²

v = √ 197

v = 14 m / s

As we can see here all rocks start with same gravitational potential energy and end with same gravitational energy. So all rocks have equal velocity and kinetic energy, and so energy is conserved. So they all hit the ground with same speed.

Therefore, they all hit the ground with the same speed.

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Tension is defined as the pulling force transmitted axially using a string, a rope, chain, or similar object, or by each end of a rod, truss member, or similar 3-D object; tension might also be expressed as the action-reaction pair of forces acting at each end of said elements.

Maximum tension:

T - mg = mv²/L

By energy conservation:

mgh = ¹/₂ mv²

v² = 2gh

Now the tension force in the vine at this position is given as:

T = mg +  mv²/L

Now substitute the values in the above equation:

T = 688 N + m(2gh)/L

T = 688 + 2×3.2(688)/18

T = 932.6 N

As the force is less than the limit of 950 N so the vine didn't break.

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To find the speed of electrons, known the accelerated and wavelength.

What is acceleration?

The rate of change in both speed and direction of velocity over time is defined as acceleration. When anything moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is always shifting, motion on a circle accelerates even when the speed is constant.

What is wavelength?

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in meters (m), centimeters (cm), or millimeters (mm).

λ=h/p

⇒ 200pm=h/m×v

V=6.626×10^⁻³⁴/9.1×10^⁻³¹×200×10^⁻¹²

=0.00364×10^⁻³⁺¹²

=0.00364×10⁹

v⇒3.64×10⁶m/s

Therefore, the speed of the electron accelerated to 3.64×10⁶m/s attain this wavelength.

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The Hamiltonian of massless rod which has a point paricle at one of its ends, is Acos(ω0 t) + Bsin(ω0 t).

The Hamiltonian of a system in quantum mechanics is an operator that corresponds to the system's total energy, which includes both kinetic energy and potential energy.

It may be demonstrated that H = T + V, where T is the kinetic energy and V is the potential energy of the system—i.e., the Hamiltonian is equal to the total energy of the system—if the constraints in the issue do not depend explicitly on time.

Choose a coordinate system such that kˆ is pointing upwards

then the angular acceleration is given by

α = d^2 *θ /dt^2 * k

The torque about the center of mass is given in the statement of the problem as a restoring torque, therefore

τcm = −bθ kˆ .

The z-component of the rotational equation of motion is

−bθ = Icm * d^2 *θ / dt^2 .

This is a simple harmonic oscillator equation with solution is

θ(t) = Acos(ω0 t) + Bsin(ω0 t)

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According to the nebular hypothesis, small terrestrial planets are formed through the process of accretion, in which dense solid particles condensed and collided with one another as a result of their mutual gravitational pull.

As opposed to this, all heavier elements condensed near the sun and formed terrestrial planets, while lighter elements moved away from the sun and formed jovian planets due to the high temperature near the sun, which only allowed heavier particles to condense there.

The solar nebular hypothesis is the explanation put forth and accepted by most scientists as to how the earth came to be. It claims that a nebular, or huge clump of dust, is where the solar system originated. The heavier materials that could resist higher temperatures formed closer to the sun as the condensation of the nebular continued. Because these minerals weren't abundant, the planets they generated weren't very big.

The Jovian planets, on the other hand, formed above the frost line and could support icy compounds. These planets' larger sizes can be attributed to the abundance of ices that formed them. The lighter hydrogen and helium elements were stripped away by solar winds, which caused their accumulation far from the sun.

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The initial velocity of the skateboard will be greater than its final velocity.

The correct option is C.

Acceleration is the rate at which the speed and direction of velocity vary over time. A point or object going straight ahead gets accelerated when it accelerates or decelerates. Even if the speed decreases, movement on a circle accelerates because the direction is always shifting.

We refer to a change in an object's speed or direction as acceleration. The rate at which speed varies is known as acceleration. Keep in mind that velocity has two parts: speed and direction.

Our theory says that an object accelerates in the reverse direction from the velocity when it slows down. As a result, the object is moving backwards.

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The complete question is-

For a skateboard with a negative acceleration, which of the following statements is always true?

A. The skateboard is losing speed

B. The final velocity of the scooter will be negative

C. The initial velocity of the skateboard will be greater than its final velocity

D. The skateboard will have a negative displacement

Answer: 20

Explanation: Because if you divide the astronauts weight by 10.

The pulling force (in N) that needs to be applied to the cord connecting the larger flywheel is 31.58 N.

Force is a push or pulls upon an object because of the item's interaction with some other object. A pressure can purpose an object with mass to exchange its speed, i.e., to boost up. stress additionally can be described intuitively as a push or a pull. A force has each importance and route, making it a vector amount.

calculation:-

Net torque on the system = 0

τ = r × F

So, here

r₁ × F₁ = r₂

12 × 50 = 19 × F₂

F₂ = 12 × 50 / 19

    = 31.58 N

The phrase force has a very particular which means that. At this degree, it is really suitable to describe a pressure as a push or a pull. A pressure isn't always something that an item consists of or 'has in it. A pressure is exerted on one object thru some other. The concept of a force is not restrained to dwelling subjects or non-residing matters.

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The car travels a distance of 50ft before stopping, at a rate of 40 ft/sec when the brakes are applied. the car deceleration at a constant rate of 16 ft/sec^2.

Given , Initial speed of the coz ( Vo ) = 40 ft/ sec

Deceleration of the car (dv/dt ) = - 16 Ft/ sec^2

Final speed of the car (Vx ) = 0 Ft / sec

Let the distance travelled by the can be x at

any time t. Let u be the velocity at any time t .

Now , deceleration means rate of decrease of velocity.

So ,

dv/dt = - 16 ft / sec^2

decreasing with

Negative sign means the velocity is decreasing with time .

dv/dt = dv/dx(dx/dt)

dv/dx(dx/dt) = -16

dx/dt = v, so

v dv/dx = -16

vdv = -16 dx

Integrating both sides under the limit 40 to o

0 to x for 'x '. This gives

[tex]\int\limits^0_ a {v} \, dx = \int\limits^0_x {-16} \, dx[/tex]

Here, a=40

x=800/16

x=50ft.

The car travels a distance of 50ft

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The potential energy will be 180J

By going through the formula of potential energy that is U=mgh

where, U= Potential energy

m= mass

g= gravitational feild

h= height

Now as per the question,

Initial velocity, u = 6 m/s

Final velocity, v = 0 m/s

Acceleration due to gravity, g = -5 m/s²

(The negative sign implies that the object is moving downwards)

To find the value of Height, we need to use the relation,

v^2 - u^2 = 2gh

0 - 36 = -10h

h = 36/10 m

Height = 18/5 m

therefore, Potential Energy(U) = mgh

                                              = 10 × 5 × 18/5 J

                                              = 180 J

Therefore, the ball will have a potential energy of 180 J when it is at its highest point.

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The speed of the longitudinal wave is 1.584 or approximately 1.6 meters per second.

Longitudinal waves are waves in which the medium's vibration is parallel to the wave's travel direction and the medium's displacement is in the same direction as the wave's propagation.

Sound waves are one example of longitudinal waves. Waves of ultrasound P-waves from earthquakes

A longitudinal wave's key features include compression, rarefaction, wavelength, amplitude, period, and frequency.

To calculate the above answer multiply wavelength by frequency to get the speed of a wave.

That is:

2.4 x 0.66

= 1.584

Where the frequency is not given beforehand, you can divide 6 crests by 9.1 seconds to determine the frequency.

Hence, the speed of the longitudinal wave is 1.584 which is approximately 1.6.

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Answer:

1200

Explanation:

Answer:408

Explanation:

Answer:

  382.2 N

Explanation:

You want the normal force on an object weighing 437 N situated on an inclined plane 29° from the horizontal.

The vector 437 N straight down can be decomposed to vectors parallel to the plane and perpendicular to the plane. That decomposition looks like ...

  (perpendicular, parallel) = 437 N · (cos(29°), sin(29°)) ≈ (382.2, 211.9) N

The normal force on the object is about 382.2 N.

Two nucleotides on the same strand form a Phosphodiester bond while two complimentary bases on opposite strands form Hydrogen bonds. An a-t base pairing forms 2 such bonds.

In DNA double helix, the individual constituents are called nucleotides. These nucleotides are composed of bases which are linked together though covalent linkage also known as a phosphodiester bond.

Two individual strands in DNA are formed by the combination of phosphodiester linkages.

In general, with in a DNA nucleotides, hydrogen bonds are present which join the complementary pairs of bases. For example, two hydrogen bonds are present between thymine and adenine while three hydrogen bonds are present between cytosine and guanine.

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The difference between the Bohr model and the Schrödinger model is that the model electron orbitals as regions of space. Option C.

In the Bohr model, we can see that the electrons were arranged in energy levels. The energy levels are such that an electron can be promoted from a lower to a higher energy level. Each of the energy levels has a given amount of energy.

However, in the case of the Schrödinger model, we do not present the electron as resident at a particular point in space but we postulate that there is a region in space where the electron could be found.

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The magnitude of the net force on the proton is 0.

An object with zero net force will either remain stationary if initially stationary or maintain a constant velocity.

Fₙ = F₁ - F₂

Fₙ = Net force

F₁  and F₂ are applied forces

Now, F = ma

0 = ma

a = 0

Since acceleration is zero this implies that the object is moving with a constant velocity.

For the given case,

The proton is moving with a constant velocity along the y direction, which means the acceleration is zero. So, the net force is:

Fₙ = ma

Fₙ = m × 0

Fₙ = 0

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The x component of the object's velocity is -8 m/s and the y component of the object's velocity at the given time is 7 m/s.

option B is the correct answer

The x and y components of the object's velocity at the given time is calculated as follows;

x = -3t³ - 5t²

y = 4t² + 3

where;'

At the given time, t = 1 second, the  x and y components of the object's velocity is;

x = -3(1)³ - 5(1) = -8

y = 4(1)² + 3 = 7

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Answer: Electrical Conductors

Explanation: Electrical conductors allow electric current to flow easily because of the make up of their atoms. In a conductor, the outer electrons of the atom are loosely bound and can freely move through the material when an electric charge is applied. In general, the best electrical conductors are metals.

The transmitters operate between 190 and 535 kHz, have a range of at least 15 miles, and have a power of less than 25 watts.

The localizer course is typically 5°, which is fairly narrow. High needle sensitivity follows from this. When the airplane is 2.5° to either side of the centerline with this course width, a full-scale deviation is visible. This sensitivity enables precise alignment to the runway for landings.

Operating between the frequencies of 108.10 MHz and 111.95 MHz, the localizer transmitter uses one of the 40 ILS channels. Signals give the pilot direction to the middle of the runway.

An instrument landing system is a precise runway approach device that uses two radio beams to give pilots horizontal and vertical guidance as they approach the landing. The glideslope (GS) defines the proper vertical descent profile, while the localizer (LOC) offers azimuth guidance.

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Mass of to object is 3 kg and 2 kg.

What is Gravitational force?

In mechanics, gravity, often known as gravitation, is the universal force of attraction that acts between all matter. It is by far the weakest known natural force and so has no effect on the internal properties of ordinary stuff. Due to its long reach and ubiquitous action, it influences the trajectories of bodies in the solar system and elsewhere in the universe, as well as the architecture and evolution of stars, galaxies, and the entire cosmos. The weight, or downward force of gravity, exerted by the Earth's mass on all bodies on Earth is proportional to their mass. The acceleration that freely falling objects experience is used to calculate gravity.

F =G(m1m2/r2)

m1m2 = [(1.00 X 10-8N)(20*10-2m)2]

/[6.67*10-11Nm2/kg2]

Now

m1-m2 =[(m1+m2)2-4m1m2] =[(5kg)2-4(6kg2)] =(1kg2) = 1kg 2m1 =

(m1+m2)+(m1-m2) = 5kg + 1kg =6kg

m1 = 3kg, m2 = 5kg,

and

m2 = 5kg - 3kg = 2kg

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Answer:

1. It will reach a height of 31.877m

2. 5.102 seconds

3. -11.456 m/s

Explanation: