can someone help me fill in the two boxes.

Answer:

The water acts like a lubricant therefore has a smooth motion over the ice.

Waves are reflected with a 180° phase shift at the closed end. At this point, there is no displacement because the closed end has a displacement node. The open end allows air to flow freely. A displacement anti-node may be found at the open end of this wave reflection since there is no phase shift.

If the length of the air column is (speed of sound in air = 330ms1), then the air column in a pipe that is closed at one end will be in resonance with a vibrating tuning fork at a frequency of 260Hz.

Waves are reflected differently by open and closed ends. In the pressure network, a tube's closed end is an antinode (or a node in the longitudinal displacement). A tube's open end roughly corresponds to a pressure node (or an antinode in the longitudinal displacement).

A node forms at the closed end because the air there cannot vibrate freely.

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Given the electric field and a point in space, we need to find the magnetic field vector H (xyzd) at that point for each case.

(a) For \(E = 600e^{(-10t)} [V/m]\), the magnetic field vector H at the point (10, 8, 50) [m] is approximately \(H = 2.42e^{(-11t)} [-0.995i + 0.091j + 0.031k] [A/m]\).

To find the magnetic field vector H, we can use the relationship \(H = (\frac{1}{μ}) \times E \times n\), where μ is the permeability of the material, E is the electric field vector, and n is the unit vector in the direction of propagation. In this case, the material is lossless, so μ = μ_0, the permeability of free space. The unit vector in the direction of propagation is n = e^(-iωt) = e^(-i10t), where ω = 10 [rad/s]. Plugging in the values, we get H = 2.42e^(-11t) [-0.995i + 0.091j + 0.031k] [A/m].

(b) For E = 600e^(jπ/3) [V/m], the magnetic field vector H at the point (10, 8, 50) [m] is approximately H = 0.2e^(jπ/3) [0.01i - 0.008j + 0.06k] [A/m].

Using the same formula as before, we can find the magnetic field vector H. In this case, the electric field is given in complex form, so we need to convert it to phasor notation. The phasor of E is E_0 = 600e^(jπ/3), and the phase angle is π/3. The unit vector in the direction of propagation is still n = e^(-i10t). Plugging in the values, we get H = 0.2e^(jπ/3) [0.01i - 0.008j + 0.06k] [A/m].

(c) For E = 600e^(j10t) [V/m], the magnetic field vector H at the point (10, 8, 50) [m] is approximately H = 2.42e^(j10t) [-0.995i + 0.091j + 0.031k] [A/m].

Again, using the same formula as before, we can find the magnetic field vector H. The electric field is given in complex form, so we need to convert it to phasor notation. The phasor of E is E_0 = 600, and the phase angle is 10 [rad/s]. The unit vector in the direction of propagation is still n = e^(-i10t). Plugging in the values, we get H = 2.42e^(j10t) [-0.995i + 0.091j + 0.031k] [A/m].

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Answer:

Its d 3.74 x 10-8N

Explanation:

Answer: 3.74 x 10-8 N

Explanation:

Answer:

The main role of neutrons is to reduce electrostatic repulsion inside the nucleus.

Explanation:

:) Good luck my friend

The distance of the skid at a speed of 112.5 km/h is determined as 106.1 m.

The distance traveled by the car is calculated by applying the following method.

v² = u² + 2as

where;

v = 45 km/h = 12.5 m/s

a = v²/2s

a = ( 12.5²) / ( 2 x 17)

a = 4.6 m/s²

The distance of the skid at a speed of 112.5 km/h is calculated as follows;

112.5 km/h = 31.25 m/s

s = (31.25²) / (2 x 4.6)

s = 106.1 m

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Answer: 14 speed of Earth around Sun I see 30 km/s. FALSE

15. Because car is in circle track, direction of velocity changes

And car is in accelerating motion. direction of acceleration points to

The centre of the circle. RIGHT

Explanation:

Different metals have different flame test colors because of the unique energy levels and electron configurations of their atoms.

When a metal is heated in a flame, the heat energy excites the electrons in the outermost energy level (valence electrons) of the metal atoms. These excited electrons absorb energy and jump to higher energy levels or orbits.

When the excited electrons return to their original energy levels, they release the absorbed energy in the form of light.

The energy of the emitted light corresponds to the energy difference between the excited state and the ground state of the electrons. This emitted light appears as a specific color or a combination of colors.

The specific color of light emitted during a flame test is characteristic of the metal ions present in the compound being tested. Each metal ion has a unique arrangement of electrons and energy levels, leading to specific energy differences and corresponding colors of light emitted.

The flame test colors are primarily determined by the metal's electronic structure and the energy gaps between its energy levels. Factors such as the arrangement of electrons in different orbitals,

the strength of electron-electron interactions, and the specific energy differences between electron transitions all contribute to the observed flame test colors.

For example, sodium ions produce a bright yellow color, copper ions produce a green color, and strontium ions produce a deep red color during flame tests.

Overall, the different flame test colors observed for different metals arise from the specific arrangement and energy transitions of electrons within their atoms or ions.

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Answer:

If you went to work your trap muscles you don't need a ton of fancy gym equipment. Here are four trapezius exercises you can perform using your own body.

Answer:

The quadratic function models the path of the rocket. When we substitute an x value, we can determine the height in feet of the rocket.

To determine the height it was launched from, we would look at the y-intercept. This represents the starting value, as time = 0 in this point (cannot have negative time).

To determine how far the rocket traveled, we would look at the positive x-intercept of the expression. At this point, height = 0, so we can see the distance from start to finish of the rocket.

To determine the greatest height achieve, we would look at the vertex of the parabola generated from the given function. Using (-b/a, f(-b/a)), we can determine the greatest height achieved.

Available options are:

A. –4500 N

B. –2500 N

C. 2500 N

D. 4500 N

Answer:

-4500 N

Explanation:

Given that we have F₁ = 3000N? (force of the barge)

the force of the tugboat is F '

To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.

Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.

Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.

Answer:

The answer is -4500 N

Explanation:

The net force which acts in the right direction of free body diagram is opposite of the frictional force acting on box. The force acting in the right direction is balanced by the frictional force. Therefore, the net force acting along the right direction is 20 N which means last option is correct.

Answer:

The velocity-time graph is illustrated and it shows the speed and direction that's traveled by the bicycle.

A velocity-time graph simply shows the speed and the direction that an object travels over a particular period of time.

It should be noted that they're also known as the speed-time graph. On the vertical axis is the velocity of the object.

Since 60 minutes = 1 hour 3 minutes will be converted to hour. This will be:

= 3/60 = 1/20 hour.

5 minutes will be changed to hour. This will be: = 5/60 = 1/12 hours.

Explanation:

To prove that rock layers in one area match rock layers found in another area, geologists use the principles of stratigraphy, including fossil, lithologic, and chemical correlation techniques.

One way to prove that rock layers in one area match rock layers found in another area is by using the principle of stratigraphy, which is the study of rock layers (strata) and their relationships. Geologists can use several techniques to correlate rock layers between different locations, including:

Fossil correlation: If a particular fossil is found in two different rock layers at different locations, it is a good indicator that the layers are of the same age. This is because certain fossils only existed during specific time periods, and so if the same fossil is found in two different rock layers, it can be inferred that those layers were deposited during the same time period.

Lithologic correlation: Rocks can have unique characteristics that allow geologists to match them to other rocks of the same type. For example, sandstone can have unique grain sizes or shapes that can help identify it as coming from a specific location.

Chemical correlation: Some rocks have unique chemical compositions that can be used to match them to other rocks of the same type. For example, volcanic rocks can have unique isotopic signatures that can help identify them as coming from a specific volcano.

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Answer:

yeah sure they should have a guaranty and should be water proof

The action - reaction pair as to do with the force of the water and the lifting of the man.

We know that according to the Newton third law of motion, action and reaction are equal and opposite. This implies that when force is exerted on an object, the object would also be able to exert an equal but opposite force on the object.

Having said this, we know that when a force is exerted on the man by the water that is applied, the reaction is that the man would be lifted higher. This is thus the action and the reaction pair that is involved here.

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Answer: The whole of it was owned originally by the lord of the manor. He lived in the big house called the manor house. Attached to it were many acres of grassland and woodlands called the park. These were the "demesne lands" which were for the personal use of the lord of the manor.

The lord of the manor previously owned the entire property. He resided in the substantial home known as the manor house.

Thus, The park, which covered many acres of grassland and trees, was connected to it. These "demesne lands" belonged to the lord of the manor and were used exclusively for his exclusive purposes.

The word "manor" is derived from the Old French word "manoir," which means "dwelling place," but a manor isn't just any old house.

The homes and grounds of the nobility were referred to as manors back when people still had titles of nobility. expressing to someone that his home is a manor is the equivalent of expressing that it is so lavish and beautiful that it could have belonged to a lord.

Thus, The lord of the manor previously owned the entire property. He resided in the substantial home known as the manor house.

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Answer:

 V = 2.52 10³ V

Explanation:

The electric potential for a point charge is

       V = k ∑ \(\frac{q_i}{r_i}\)

In this case the formula is

       V = k (\(\frac{q_1}{r_1} + \frac{q_2}{r_2}\))

distances are the absolute value

       r₁ =√ (7.1 -0)² = 7.1 m

       r₁ =√ (7.1 - 14.3)² = 7.2 m

we substitute

       V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

we have two possibilities

* different charges

         V = 9 10⁹ (q₁ / 7.1 + q₂ / 7.2)

* equal charges and same sign

          q₁ = q₂ = q

         V = 9 10⁹ q (1 / 7.1 + 1 / 7.2) = p 9 10⁹   0.2797

         V = 2.52 10⁹ q

if we assume a value of the charge, for example q = 1 10⁻⁶ c

           V = 2.52 10⁹ 1 10⁻⁶

            V = 2.52 10³ V

In magnets, opposite poles attract each other whereas like poles repel one another. Thus, two magnets will repel one another when their north poles are placed close to one another.

The magnets' opposing poles attract one another as they get close to one another. They will come together in any north-south configuration. However, when two opposite poles are brought together, they push one another apart. The north poles of two objects cannot be joined. The strength of two or more magnets stacked together will be almost as strong as one magnet of the combined size. When two north poles or two south poles are brought together, the magnetic field lines will begin to bend away from one another. It displays the magnetic field lines produced by a bar magnet's two narrowly spaced north poles.

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Analytical maps can be created to depict historical ownership, paved areas for cars, parks, natural amenities, and community street design. Streets, being public spaces, require measurement to determine their intended beneficiaries.

Analytical maps offer a valuable tool for visualizing and understanding various aspects of urban planning. By creating maps that showcase historical ownership patterns, paved areas designated for cars, locations of parks and natural amenities, and community street design, it becomes easier to assess the distribution of resources and infrastructure within a city.

In this context, streets hold a significant role as public spaces. They are not solely meant for vehicular traffic but should also prioritize the needs and activities of pedestrians, cyclists, and the wider community. Analyzing street design through mapping can help evaluate whether streets are primarily designed to cater to cars or if they accommodate a balanced and inclusive approach that considers the needs of all users.

To achieve equitable urban environments, it is crucial to assess the intended beneficiaries of street design and identify any discrepancies or biases in the allocation of public space. By utilizing analytical maps, planners, policymakers, and communities can have a clearer understanding of the current state of street design and work towards creating more people-centric and sustainable cities.

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Nerve impulse is used to send information in the form of electrical signals, Nerve impulses are signals carried along nerve fibers.

These signals deliver data about the body and the outside world to the spinal cord and brain. They coordinate movement of your muscles by facilitating communication between central nervous system centers.

For instance, when your finger comes in contact with a hot stove, nerve impulses help the brain and hand's nerve cells communicate quickly, saving you from a severe burn.

An alternative term for the nerve impulse is "action potential." When a neuron is activated, an electric signal is created.

An electrical signal is a voltage or current that transmits information; often, a voltage is meant. Any voltage or current in a circuit can be described using the phrase.

The two primary signal types utilized in electronics are analog and digital signals. The fastest form of communication in the body is electrical signals.

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The acceleration on side b (ab) is 0.80 times the acceleration on side a (aa).

For side b:

The normal force is equal to the weight of the box, which is mg, where m is the mass of the box (10 kg) and g is the acceleration due to gravity. Thus, N = mg.

The force of friction on side b can be written as:

\(Fb = \mu b * mg\).

Since  \(\mu b = 0.80 * \mu a\),

we have \(Fb = 0.80 * \mu a * mg\).

Using Newton's second law, Fb = ma. Substituting the force of friction expression, we get:

\(0.80 * \mu a * mg = ma.a = 0.80 * \mu a * g.\)

For side a:

The force of friction on side a (Fa) is given by\(Fa = \mu a * mg\).

Using Newton's second law, Fa = ma. Substituting the force of friction expression, we get:

\(\mu a * mg = ma.\)

Simplifying the equation, we find:

\(a = \mu a * g.\)

Comparing the accelerations on side b (ab) and side a (aa), we have:

\(ab = 0.80 * \mu a * g, \\aa = \mu a * g.\)

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--The complete Question is, A box of mass 10 kg is placed on a ramp inclined at an angle of 30 degrees to the horizontal. The terrain on the upper side of the ramp, denoted as side b, is smoother than the lower side, denoted as side a. The friction coefficient on side b is 0.80 times the friction coefficient on side a. If the box starts sliding down from rest, what is the acceleration of the box on side b compared to side a? --

If the light signals coming from the sites where the events occur arrive at the middle point between these origin points simultaneously, then distant events are simultaneously occurring in the given inertial reference frame.

Standing observer facing moving observer (i.e., the middle of the train), lightning striking the front of the train car, and standing observer are three events that are geographically dislocated but synchronous in the inertial frame of the standing observer.

Spiral galaxies seen face-on and edge-on don't actually differ from one another; their appearance is only a result of the viewing angle. Spiral galaxies with tightly wound arms are common.

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The system that automatically reduces engine torque and applies brakes to wheels that have lost traction and begun to spin is called the Secondary Braking Control system (SBC). This system is designed to improve the vehicle's stability and control during acceleration, especially on slippery or uneven surfaces.

When the SBC detects a loss of traction on one or more wheels, it automatically reduces the engine torque to prevent the wheels from spinning. At the same time, it applies the brakes to the affected wheels to slow them down and help them regain traction. This action also transfers torque to the wheels that still have traction, which improves the overall stability and control of the vehicle.

The SBC is an important safety feature that helps prevent accidents and improves driver confidence in challenging driving conditions. It works in conjunction with other systems such as anti-lock brakes (ABS) and traction control to provide a comprehensive safety package for modern vehicles.

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A contact lens with a +3.014 diopters power will enable a farsighted woman with a near point of 70.0 cm to see objects clearly at a distance of 27.3 cm.

We have do = 23cm and di = -75cm

So 1/f = 1/do + 1/di = 1/23 + 1/(-75) = .03014

So f = 1/.03014=33.17

So power = 1/0.3317 = +3.014Diopters (converging lens)

In optics, a diopter represents the magnifying power of a lens or lens system. The power of a lens is proportional to unity (one) divided by the focal length (see lens), so the power of a lens in diopters is mathematically equal to 1 meter is divided by the focal length. A healthy human eye can concentrate on an object or picture that is 1/40 of a meter away with an optical power of roughly 40 diopters. A average young person's eye has an additional 20 diopters of adjustment.

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Answer:

Magnifying glass and a Petri dish.

Explanation:

The speed of the rock is 56.8 m/s.

Wavelength, λ = 2.03 x 10⁻³⁴m

Mass of the rock, m = 115 x 10⁻³kg

So, the kinetic energy,

1/2 mv² = hc/λ

v = √(2hc/mλ)

v = √(2 x 6.63 x 10⁻³⁴/115 x 10⁻³x2.03 x 10⁻³⁴)

v = 56.8 m/s

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According to the data given in the question the net force on the box is of 5 N.

All of the forces that are applied to an object are added up to form the net force. As a consequence of the fact that it (force) is a vector and therefore that two forces with identical magnitudes and opposing directions cancel each other out, the resultant force is the total of the forces, or put another way, the net force is just the total of all the forces.

Given data :

Force on box to the left side (F1) = 15 N

Force on box to the right side (F2) = 20 N

Because both forces are in opposite direction

Hence,

Net force = F2 - F1

Net force = 20 - 15

Net force = 5 N.

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Yes i would personally get better results and be more motivated by participating in physical activities that are competitive or recreational.

My motivation would increase if I engaged in leisure physical activity. Because you must aspire for victory, competitive hobbies may come with a lot of responsibilities. Regular exercise will make you happy regardless of whether you're doing it to compete or just for the sake of it. similar to team sports like baseball, soccer, basketball, badminton, and volleyball. Because you'll be with people who share your passion for the sport but aren't competing with you, these leisure activities are a good idea.

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