If a television with mass 15kg is lifted to a shelf of height 1.2m how much gravitationallyl potential energy is added to the television

To strengthen an electric motor, increase the number of coils, enhance the magnetic field's strength, and optimize the commutation process.

To make an electric motor stronger, several changes can be implemented. Increasing the number of coils in the motor will increase the torque, as the magnetic force exerted on each coil contributes to the overall twisting force on the motor's shaft. Enhancing the strength of the magnetic field within the motor, either by using stronger magnets or by increasing the current that produces the magnetic field, can also lead to a more powerful motor. Finally, ensuring the efficiency of the commutation process - the timing of the current's reversal to maintain continuous torque - is also crucial for motor strength. Factors such as the precise adjustment of commutators and brushes can minimize energy loss and improve performance.

Answer:

The air is a homogeneous mixture of gases that make up the Earth's atmosphere, which remain around the planet by the attraction force of gravity.  

Its properties changes with the altitude, the pressure, the temperature and the density. For example, there is a relation that is inversely proportional between the temperature and the air density.  

Therefore, the air in a cool region of the atmosphere will be denser than the air in a hot region of the atmosphere.

In other words:

Answer:

volcano

Explanation:

the ash and stuff pollutes the air

Answer: the answer is D if you do t wanna read all that

The gas flow speed in a pipeline with a diameter of 0.250 m delivering 1.55 m³ of gas per second is approximately 31.56 m/s.

The question asks for the flow speed of the gas in a natural-gas pipeline with a specific diameter, which can be calculated through the continuity equation used in fluid dynamics. This equation states that the volume flow rate (Q) is equal to the velocity of the flow (v) times the cross-sectional area of the pipe (A). Therefore, we can rearrange the equation to find the velocity as V = Q/A.

The cross-sectional area A of the pipeline can be calculated using the formula for the area of a circle since the pipe is essentially a circular cylinder: A = πr², where r is the radius of the pipeline. Given the pipeline diameter of 0.250 m, the radius is half this value or 0.125 m. Substituting this into the area formula gives A = π*(0.125 m)² = 0.0491 m².

Finally, we can find the flow speed by dividing the given volume flow rate (1.55 m³/s) by the calculated cross-sectional area: V = Q/A = 1.55 m³/s/0.0491 m² = 31.56 m/s. So, the gas flow speed in the pipeline is approximately 31.56 meters per second.

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The reaction is D. endothermic.

Absorption or need of energy from surroundings is called endothermic process. Heat is the major common form of energy which is absorbed in this process.  In this process, enthaply of reactant is less than the product.

For example, an ice cube placed in the hand for some time starts to melt and it takes energy in the form of heat from the hand. This process always requires energy because of the breaking of existing and formation of new chemical bonds.

1. 10sec

2. Can not be determined

3. 0.1wave/sec

Answer :

(1) T = 10 seconds

(2) Wavelength cannot be determined.

(3) Frequency, [tex]\nu=0.1\ waves/sec[/tex]

Explanation :

(1) From the given graph :

Time period of the wave is defined as the time taken by it to complete one cycle.

So, the period of this wave is (C) " 10 seconds".

(2) The distance between two consecutive crest or the trough is called the wavelength of the wave.

From the graph it is clear that the distance between two consecutive crests is 10 cm(see attached figure).

So, the correct option is (a) "10 cm".

(3) As the time period of the wave is 10 seconds.

So, [tex]f=\dfrac{1}{T}[/tex]

[tex]f=\dfrac{1}{10\ s}\ waves/sec[/tex]

[tex]f=0.1\ waves/sec[/tex]

So, the correct option is (c) " 0.1 wave/sec ".

Answer:

All colors are absorbed by the object except blue color.

Explanation:

When a white beam of light any object the light beam gets dispersed in its constituent colors. The object reflect a single color and absorb all remaining colors. So the object appears of the color which is reflected by object.

When the light beam strikes the blue object it gets dispersed in its constituent colors. All the colors are absorbed by the object except blue color. Blue color is reflected by the object.

Thus, the object appears of blue color.

The work needed to stop the bus is 500000 J. The work done by the brakes to stop the bus is equal to the change in kinetic energy of the bus.

The initial kinetic energy of the bus is 500000 J. When the bus stops, its kinetic energy is zero.

Therefore, the work done by the brakes is:

W = ΔKE = KE_final - KE_initial = 0 - 500000 J = -500000 J

The negative sign indicates that the work is done by the brakes on the bus.

Therefore, the work needed to stop the bus is 500000 J.

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The amount of work that is needed to stop the bus is the same energy it has so 500000 joules

The work needed to stop the bus is equal to the bus's kinetic energy.

In this case, the work done by the brakes is used to convert the bus's kinetic energy into heat energy. The heat energy is dissipated into the environment.

Therefore, the work needed to stop the bus is 500000 joules.

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Answer:

type 2 diabetes

Explanation:

edge unit test review

The headlights of a typical truck are powered by a 12 V battery, then the current they draw if the resistance is 4.8 ohms would be 2.5 Ampere.

Resistance is the obstruction of electrons in an electrically conducting material.

V=IR

As given in the problem, the headlights of a typical truck are powered by a 12 V battery, the find out the current drawn if the resistance is 4.8 ohms.

By using Ohm's Law,

The voltage of the battery = 12 volt

The resistance of the resistor = 4.8 Ohm

V = I × R

12 = I × 4.8

I = 12 / 4.8

I = 2.5 Ampere

Thus, If the headlights of a typical truck are powered by a 12 V battery, then the current they draw if the resistance is 4.8 ohms would be 2.5 Ampere.

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Answer:

Responses may vary but should include some or all of the following information:   Sternberg’s theory of intelligence includes analytical, practical, and creative intelligence. Analytical intelligence is the type of intelligence used to problem solve. It involves abstract reasoning ability and evaluation skills. Practical intelligence is the type of intelligence that involves the ability to understand everyday tasks and how efficient one is in adapting to the surrounding environment. Creative intelligence is the type of intelligence that involves the ability to react to novel situations or stimuli.

Explanation:

hope this helped! ^-^

Robert Sternberg's triarchic theory includes analytical intelligence (problem-solving, analysis), creative intelligence (creating, imagining), and practical intelligence (application of knowledge in day-to-day situations).

Robert Sternberg's triarchic theory of human intelligence consists of three types or categories: analytical intelligence, creative intelligence, and practical intelligence. Analytical intelligence relates to problem-solving and the analytical evaluation of information. For example, answering a multiple-choice quiz requires analytical intelligence. Creative intelligence involves creating, designing, imagining, or supposing. A student using creative intelligence might generate innovative ideas for a school project. Practical intelligence pertains to the application of intellectual skills in everyday contexts. One might use practical intelligence when navigating a social situation or solving real-world problems.

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Answer:

c

Explanation:

A neutron and a large nucleus.

Charles's law formula describes a direct relationship between the volume and absolute temperature of a gas at constant pressure. The formula is V1/T1 = V2/T2. It explains why gas contracts or expands with temperature changes.

The formula for Charles's law describes a direct relationship between the volume and absolute temperature (measured in Kelvin) of an ideal gas, provided the pressure remains constant. The formula is V1/T1 = V2/T2 where V1 and V2 are the initial and final volumes and T1 and T2 are the initial and final temperatures.

For example, if you have a gas in a balloon at room temperature (say, 300 Kelvin), and the balloon is inflated to a certain volume, if you then cool the gas to half the initial temperature (150 Kelvin), the volume of the gas (balloon) will also contract to half of its initial volume. This is the principle of Charles's law, showing a direct temperature-volume relationship in gases.

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Charles's Law is represented by the formula V₁/T₁ = V₂/T₂, which shows the relationship between the volume and temperature of a gas at constant pressure.

Charles's Law describes the relationship between the volume and temperature of a gas at constant pressure. According to this law, the volume of a gas is directly proportional to its temperature when pressure remains constant. When represented as mathematical formula the Charles's Law is:

V₁/T₁ = V₂/T₂

Here, V₁ and T₁ represent the initial volume and temperature of the gas, while V₂ and T₂ represent the final volume and temperature of the gas.

Complete Question

Which of the following formulas best describes Charles's law? V₁/T₁ = V₂/T₂ ,  P₁V₁ = P₂V₂ , P₁V₁/P₂V₂ , P₁/T₁ = P₂/T₂

Explanation:

Sound signals used in waterways are a mode of communication with the other boaters to avoid any confusion and avoid collisions.

In order to show that we disagree with the other boater decision, the sound signal to blow is five or more short blast. This will give an impression to the other boater that I have not agreed with his decision.

The sound signal that I will give the other boater to inform him that I wish him to pass his boat on my left side is one short blast. This will tell him to pass on my left side.

The sound signal you should use to indicate you disagree with other boaters intentions is five or more short blasts

Five or more short blast shows a danger signal. They are signals used to indicate disagreement. They are one of the types of sound signals that show you are not in agreement with other boater’s intention.

Sound signals are also known as blasts. There are 2 common sound signals, short blast and prolonged blast. They are used when two vessels are heading towards each other.

Although these types of sound signals cannot be used in conditions that affect visibility such as fog.

However, there are different sound signals combinations and it is very important for all boaters to understand what each of the sound signals means.

The short blast is just 1 seconds while the prolonged blast lasts for duration of 4-6 seconds.  

Sound signals can actually mean a change in direction to other boaters, it has different meanings.

One short blast indicate that you are informing other boaters you want to pass them from your port side (left-hand side), prolonged blasts means you are informing other boaters you want to pass them from starboard side (right-hand side) and three shorts blast means you are informing other boaters you are operating astern propulsion

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Answer:negative work

Explanation:

This is right

The impulse exerted on the large object will be [tex]J=11\ kg\frac{m}{s}[/tex]

1) The change in the momentum of the small object is given by the difference between its final momentum and its initial momentum:

[tex]\Delta p=(p_f-p_i)[/tex]

where  [tex]p_f\ \ p_i[/tex]  are the final and initial momentum of the small object. Substituting the numbers of the problem, we find

[tex]\Delta p=-5-6=-11\ \frac{kgm}{s}[/tex]

where we put a negative sign in front of pf because the direction of the object after the collision is opposed to its initial direction.

2) The impulse is equal to the product between the force applied to an object and the time interval:

[tex]J=F\times \Delta t[/tex] (1)

since the force is the product between the mass and the acceration: F=ma, and the acceleration is equal to the change in velocity divided by the time, we can rewrite (1) as

[tex]J=F\times \Delta t=ma\Delta t=mv\frac{\Delta t}{\Delta t}=mv=\Delta p[/tex]

So, the impulse is equal to the variation of momentum. Therefore, the impulse exerted on the small object is

[tex]J=\Delta p=-11\ \frac{kgm}{s}[/tex]

3) We have to find the final momentum of the large object. Initially, its momentum is zero, because it is at rest. Using the law of conservation of momentum,

[tex]p_i+0=p_f+P_f[/tex]

where  are the final and initial momentum of the small object, while  is the final momentum of the large object. By substituting the numbers we had before:

[tex]P_f=p_i-p_f=6-(-5)=11\ \frac{kgm}{s}[/tex]

So, the impulse exerted on the large object is equal to its variation of momentum:

[tex]\Delta p=P_f-p_i=11-0=11\ \frac{kgm}{s}[/tex]

Hence the impulse exerted on the large object will be [tex]J=11\ kg\frac{m}{s}[/tex]

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The time period of a simple pendulum is defined as the time taken by the pendulum to finish one full oscillation .

Time period (T) of a simple pendulum = 2π[tex]\sqrt{l/g}[/tex]

given :

Time period (T1) = 3.8 second

L1 = ?

Time period (T1) = 2π[tex]\sqrt{L1/g}[/tex]

3.8 sec = 2 * 3.14 [tex]\sqrt{L1/9.8}[/tex]

squaring both the sides

14.44 = 39.44 * ( L1 / 9.8 )

L1 = 35.16  m

since , the length of the pendulum is doubled

L2 = L1*2 = 35.16 * 2 = 70.32 m

Let the period t of the longer pendulum will be = T2

Time period (T2) = 2π[tex]\sqrt{L2/g}[/tex]

    = 2 * 3.14 [tex]\sqrt{70.32/9.8}[/tex]

    = 16.83 seconds

The time period t of the longer pendulum will be  16.83 seconds

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Final answer:

Doubling the length of a simple pendulum increases its period according to the square root of 2, resulting in a new period of approximately 5.37 seconds from the original 3.8 seconds.

Explanation:

The question asks about the effect of doubling the length of a simple pendulum on its period. To approach this, we rely on the formula for the period of a simple pendulum: T = 2π√(L/g), where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity. Doubling the length of the pendulum means that we replace L with 2L in the formula, which affects the period.

To find the new period after doubling the length, we calculate T'= 2π√(2L/g). This can be simplified to T' = T√2, given that T is the original period. Since the original period is given as 3.8 seconds, we calculate the new period as 3.8√2, which approximates to 5.37 seconds.

When two or more waves are present at the same place at the same time, then the resulting effect is called as superposition.

The principle of Superposition of waves states that the resultant displacement of a group of different waves in a medium at a given point of time at the same place is equal to the vector sum of the individual displacements which are produced through each of the wave at that specific point in the medium. There are two types of superposition of inference of waves and these are the constructive interference and the destructive interference.

Most of the waves generally appears complex in a medium because of the result from the two or more waves which combine as they come together at the same place at the same point of time in the medium.

An example of superposition of waves is the silt back-fill of any underground drain which would form some time after the ground is present immediately above it.

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