What "new theory" says:
all matter and energy in the universe is composed of incredibly tiny vibrating strings.
1-The big bang theory
2-The superstring theory
3-The Theory of everything
4-The unified theory

Answer:

Mono-chromatic, Poly-chromatic. When a wave moves from one medium into another at an angle other than 90 degrees the wave will change direction and continue to follow a new straight-line path

                                              Thank you

No two electrons in an atom can have identical four quantum numbers. This is a statement that is attributed to the Pauli Exclusion Principle.

It states that in an atom or molecule, no two electrons can possess the same four electronic quantum numbers. As an orbital can accommodate a maximum of only two electrons, the two electrons must have opposite spins. This means if one electron is allotted a spin-up electron, the other electron must be a spin-down electron.

The adequacy of an orbital to accommodate electrons is decided by Pauli's exclusion principle. According to this principle, for an electron belonging to the same orbital, the spin quantum number must be different since the other three quantum numbers are the same.

The spin quantum number can have two values: +1/2 and -1/2.

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Answer & Explanation:

This can be explained with Newton's first law, Inertia - if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.  

When you walk, your entire body is in a forwarding motion. If your toe hits an object (in this case, a chair), only this unfortunate toe will stop while the rest of your body continues its forwarding motion, resulting in you falling forward.

The bowling ball and a ping pong ball are rolled down a hallway at identical velocities  but bowling ball has greater kinetic energy.

Kinetic energy is calculated using the formula \(KE = 1/2 mv^2\), where m represents the mass of the object and v represents its velocity.

In this case, both the bowling ball and the ping pong ball are rolled down the hallway at identical velocities (v). However, the mass (m) of the bowling ball is much greater than the mass of the ping pong ball. Since the mass of the bowling ball is higher and the velocities are the same, the bowling ball will have a greater kinetic energy.

When comparing a bowling ball and a ping pong ball rolled at the same velocity, the bowling ball will have a higher kinetic energy due to its greater mass.

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When light travels in a certain medium and falls on the surface of another medium a part of it turns back in the same medium This phenomenon is called Reflection.

A wavefront may alter its course at an interface between two different media and return to the first medium, a phenomenon known as reflection. Common examples are the reflection of light, sound, and water waves.

Reflection of light refers to the occurrence where light strikes an item and bounces back off its surface. Examples: using a flat mirror to reflect. by a spherical mirror's reflection. There are essentially two types of reflection that apply to light. While diffuse reflection is caused by rough surfaces that tend to reflect light in all directions, specular reflection is described as light reflected off a smooth surface at a specific angle.

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Answer:

Passive twinaxial cable

Explanation:

It is what it is

Answer:

B

Explanation:

hair can be a safety hazard

R = [(100 - l) * 40]/ l, where l is the length of the wire from the unknown resistance to the balance point.

For a balance point length of l, the resistance of the unknown resistor is given by the above equation.

In a meter bridge experiment, a balance point was found in the wire corresponding resistance  when a resistance of 40 ohms was connected to the other arm of the bridge. Find the value of R.A meter bridge is a device used to calculate the resistance of an unknown conductor.

A uniform wire of resistance R is used to set up a meter bridge. A galvanometer and a battery are both connected to the wire ends at the ends. A jockey is slid along the wire to identify the point of balance, which is shown by no deflection on the galvanometer.

At this stage, the bridge is balanced since the potential difference on either side of the galvanometer is zero. The value of the unknown resistance is determined using the meter bridge formula.

The balanced point can be computed by:

R=ρl / A, where R is the resistance of the uniform wire, ρ is the resistivity of the material, l is the length of the wire and A is the cross-sectional area of the wire.

In the equation above, the resistivity and cross-sectional area of the wire are constants, and the length of the wire is known. To find the unknown resistance R, we will need to use the formula below:

R = [(100 - l) * 40]/ l, where l is the length of the wire from the unknown resistance to the balance point.

For a balance point length of l, the resistance of the unknown resistor is given by the above equation.

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Answer:

it is very hard but i am trying to help you.

Explanation:

The magnitude of the resultant force (9). 2.5872 x 10⁻⁸N.

The magnitude of the gravitational force between two masses m₁ and m₂ separated by a distance r is given by:

F = G * m₁ * m₂ / r²

where G is the universal gravitational constant.

To find the resultant force on the mass at the origin, we need to calculate the gravitational forces exerted on it by the other two masses and then find the vector sum of those forces.

Let's assume the other two masses are located at points (x₁, y₁) and (x₂, y₂) in the xy plane. Then, the distances between the mass at the origin and the other two masses are:

r₁ = √(x₁² + y₂²)

r₂ = √(x₂² + y₂²)

The gravitational forces exerted on the mass at the origin by the other two masses are:

F₁ = G * 7kg * 7kg / r₁²

F₂ = G * 7kg * 7kg / r₂²

To find the direction of each force, we need to calculate the angles between the line connecting the mass at the origin and each of the other two masses, and the x-axis. The angles are given by:

θ₁ = atan2(y₁, x₁)

θ₂ = atan2(y₂, x₂)

Note that a tan2(y, x) returns the angle between the positive x-axis and the line connecting the origin to the point (x, y), measured counterclockwise from the x-axis.

The x and y components of each force are then given by:

F₁x = F₁ * cos(θ₁)

F₁y = F₁* sin(θ₁)

F₂x = F₂ * cos(θ₂)

F₂y = F₂ * sin(₂)

The resultant force on the mass at the origin is the vector sum of F₁ and F₂:

Fx = F₁x + F₂x

Fy = F₁y + F₂y

The magnitude of the resultant force is given by:

F = (Fx² + Fy²)

Plugging in the given values of G, m, x, and y, and evaluating the above equations, we get:

F = 2.5872 x 10⁻⁸N

Therefore, the answer is option (9).

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Answer:

mercury

Explanation:

edge 2020

According to this equation, so f = 3.29 x 1014 Hz. The light therefore has a frequency of 3.29 x 1014 Hz. The wavelength range of visible light is roughly 400–700 nm, and its frequency range is roughly 400–800 tHz.

The frequencies used by white LED lighting devices are a combination of 474 terahertz, 535 terahertz, and 638 terahertz. White LED technology has made it possible to create inexpensive, energy-efficient lighting that may be utilised in a range of applications, from desk lamps to street lamps.

The capacity to render different kinds of light visible for human sight makes light energy a type of kinetic energy. Light is referred to as an electromagnetic radiation that is produced by hot objects like the sun, lasers, and lightbulbs. Photons, which are tiny energy packets, are present in light.

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In order to prevent her cat from opening the door, Jenna can strengthen the magnetic force holding it. Change the steel plate with a copper plate to create a stronger force.

You may try applying 15 minutes' worth of linear motion in one direction while rubbing a powerful, heavy-duty magnet against the weaker one. The magnetic domains of the weaker magnet may be able to realign with the help of the stronger magnet.

The strength of a magnetic field is influenced by the magnet's initial strength as well as its distance from the field source. in the event that an electric current created the magnetic field.

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The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

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Answer:

Maybe [A]

Explanation:

Answer:

The mass is  \(m = 3.75 \ kg\)

Explanation:

From the question we are told that

     The initial temperature is  \(T_1 = 15^oC\)

      The final  temperature is  \(T_2 = 100 ^o C \ (boiling point )\)

Generally the maximum heat produced by  1  Liter   of  natural gas is  \(9000 \ cal\)

 So the amount of heat produced by 100 L is  

              \(E = 9000 * 100\)

=>           \(E = 9000 00 \ cal\)

Generally given that the efficiency is  \(\eta = 0.35\)

Then actual heat received by the water is

         \(H = 0.35 * E\)

=> \(H = 0.35 * 9000 00\)

=> \(H = 315000 \ cal\)

Converting to kcal  

=> \(H = 315000 \ cal = \frac{315000}{1000} = 315 \ kcal\)

Generally the specific heat of water is  

       \(c_w = 1 kcal/ kg \cdot ^oC\)

Generally the heat received by the water is mathematically represented as

       \(H = m * c_w * (T_2 - T_1)\)

=>     \(315 = m * 1 * ( 100 - 15 )\)

=>     \(m = 3.75 \ kg\)

Answer:

Just as images are reflected from the surface of a mirror, light reflected from a smooth water surface also produced a clear image. ... Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte.

Explanation:

hi po I hope it's help you

To determine the magnitude of the horizontal force acting on the sprinter, we would need more information such as the sprinter's mass and acceleration. However, I can guide you on how to find it using these terms once you have the necessary information:

1. Mass (m): The mass of the sprinter, typically expressed in kilograms (kg).
2. Acceleration (a): The sprinter's horizontal acceleration, usually in meters per second squared (m/s²).
3. Force (F): The horizontal force acting on the sprinter, which we are trying to find. This is measured in Newtons (N).

To find the magnitude of the horizontal force (F), use Newton's second law of motion:

F = m * a

Once you have the sprinter's mass and acceleration, plug in the values and calculate the force. Express your answer in Newtons (N).
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Answer:

Frequency

Explanation:

The Frequency of a wave is the number of waves produced by a source each second

Explanation:

see the attachment.. hope it will help you

Answer:

Vx = 53 m / 4 sec = 13.25 m/s       horizontal speed

Vy = 2 sec* 9.80 m/sec^2 = 19.6 m/s      vertical speed

V = (13.25^2 + 19.6^2)^1/2 = 23.7 m/s

Check:

Range = V^2 sin 2θ / g

tan θ = 19.6 / 13.25 = 1.48     θ = 55.9 deg

R = 23.7^2 sin 112 deg / 9.8 = 53.1 m

Answer:

it was equal to the weight of the object

hope it helped ☺️

Explanation:

since both the teammates are of the same height, their height won't matter. Because now the basketball won't cover any vertical distance.

We have to calculate its range the horizontal distance covered by it when tossed from one teammate to the other.

range can be calculated by the formula :-

\( \boxed{\mathfrak{range = \frac{ u {}^{2} \sin 2\theta }{g} }} \)

u is the velocity during its take off and \(\theta\) is the angle at which its thrown

Given that

calculating range using the above formula

\( = \frac{ {8}^{2} \sin2(40) }{10} \)

\( = \frac{64 \times \sin(80) }{10} \)

value of sin 80 = 0. 985

\( = \frac{64 \times 0.985}{10} \)

\( = \frac{63.027}{10} \)

\( = 6.3027\)

Hence,

\( \mathfrak { \blue{the \: teammate \: is \: \red{\underline{6.3027 \: meters} }\: away } } \)

50 degree is equal to 313 kelvin and 34 degrees is equal to 277 kelvin.

Temperature scale with an absolute zero below which temperatures do not exist, the Kelvin scale. The temperature at which molecular energy is at its lowest is absolute zero, or 0°K, which is equal to 273.15° on the Celsius temperature scale.

Since the Kelvin degree is the same magnitude as the Celsius degree, the freezing point of water (zero degrees Celsius) and the boiling point of water (one hundred degrees Celsius) are equivalent to 273.15°K and 373.15°K, respectively, in Celsius.

It is customary to remove the degree symbol and instead use the letter K when writing temperatures in the Kelvin scale. William Thomson Kelvin, a British mathematician and physicist, proposed the temperature scale in 1848, and it bears his name. another scale for absolute temperature.

Therefore, 50 degree is equal to 313 kelvin and 34 degrees is equal to 277 kelvin.

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Answer:

The value moment of inertia the disk:

I = 6.4 kg·m²

Explanation:

Given:

Tk = 70 J

L = 30 kg·m² / s

_____________

I - ?

Rotational kinetic energy:

Tk = I·ω²/2

Angular velocity:

ω = √ (2·T / I)

Angular moment of a rotating body

L = I·ω = I·√ (2·T / I) = √ (2·T·I² / I ) = √ (2·T·I )

Raising to the second degree:

L² = 2·T·I

The value moment of inertia the disk:

I = L² / (2·T)

I = 30² / (2·70) ≈ 6.4 kg·m²

А) 6.4 кг·м²

Explanation:

Δy = v₀ t + ½ at²

Δy = (0 m/s) (7.0 s) + ½ (-9.8 m/s²)(7.0s)²

= -34.3

The sartorius muscle is the solution. A superficial muscle that runs the full length of the leg, the sartorius is involved in the flexion of the knee and hip.

The heart's wall is made up of cardiac muscle, which also causes the heart to contract vigorously. Intestinal, uterine, blood vessel, and internal ocular muscles are all made of smooth muscles.

The epidermis and some skeletal muscles are linked to the bones (muscles in our face). The skeletal muscles' contraction aids in the movement of the limbs and other bodily parts.

Although some estimates go as high as 840, the majority of sources claim that there are over 650 identified skeletal muscles in the human body.

Therefore, The sartorius muscle is the solution. A superficial muscle that runs the full length of the leg, the sartorius is involved in the flexion of the knee and hip.

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Answer:

neap tide i think or high tide

The Rio Grande is one of the largest river systems in the United States, running over 3,000 kilometers from the mountains of Colorado to the Gulf of Mexico. The river flows from north to south and passes through several states, including Colorado, New Mexico, and Texas.

A comparison of the discharge of the Rio Grande at Albuquerque and at Otowi Bridge (located upstream, near Santa Fe) is as follows: Albuquerque: It is the largest city in New Mexico, situated in the central part of the state. The Rio Grande flows through the city, where it is dammed to form a large lake known as Elephant Butte Reservoir. The discharge of the Rio Grande at Albuquerque is around 100 cubic feet per second (cfs) during normal conditions.

This means that the river has twice the volume of water at Otowi Bridge than at Albuquerque.During times of drought, the river's discharge can drop to dangerously low levels, affecting wildlife and human communities that rely on the river for water. The river's discharge can also increase during periods of heavy rainfall or snowmelt, leading to flooding in downstream communities.

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