what is the electric field amplitude of an electromagnetic wave whose magnetic field amplitude is 2.7 mt ?

When a retailer offers t-shirts in small, medium, large, and x-large, and in 25 colors, the competitive strategy they are using is Variety

A business uses a set of rules and practises known as a competitive strategy to acquire a competitive edge in the market. It is the procedure for choosing and carrying out strategies that enable a company to strengthen its position in the market.

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Explanation:

120 sin ( 120 pi t )     <====amplitude 120   60 (2 pi) cycles per second

The voltage flowing through household electric wires, with a maximum of 120 volts and a frequency of 60 cycles per second, can be modeled by the equation V(t) = 120 * sin(2π * 60 * t).

The equation that best represents the value of the voltage as it flows through the electric wires can be modeled using a sine function. Given that the maximum voltage is 120 volts and there are 60 cycles every second, we can use the following equation:

V(t) = 120 * sin(2π * 60 * t)

In this equation, V(t) represents the voltage at time t in seconds. The sine function is used to model the periodic nature of the voltage, with a frequency of 60 cycles per second (60 Hz).

The maximum voltage of 120 volts is multiplied by the sine function to scale the amplitude of the voltage waveform. The term 2π * 60 * t represents the angular frequency, where t is the time in seconds.

Please note that this equation assumes an idealized sinusoidal waveform and may not account for variations or fluctuations in the actual voltage supply.

Therefore, The equation V(t) = 120 * sin(2π * 60 * t) can be used to describe the voltage that flows through residential electric wires, which has a maximum voltage of 120 volts and a frequency of 60 cycles per second.

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Yes, The velocity of a ball is 1 m/s at a given instant of time. it is possible for the acceleration of the ball to be -1 at this instant.

If it is made sure that the other values are plugged in correctly, a positive velocity is capable of making a negative acceleration.

A moving item always experiences positive acceleration. An object that is slowing down always experiences negative acceleration. However it does not mean that negative acceleration always mean reduction in speed.

Deceleration always slows down motion. However, negative acceleration is just acceleration in the opposite direction according to the selected coordinate system. Negative acceleration might or might not be deceleration, and vice versa for negative acceleration.

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Answer:

Explanation:

Now

Look at it this way. This box is in equilibrium... Meaning forces around balanced out.

Now...

The Earth's pull on it is 98N

What Minimum external forces is needed to pick this up....

Now... The Minimum Force is 98N

Why?

Since This Box is under the influence of gravity...

Gravity is acting as a resistance

If you apply a force less than 98N... Let's say 50N on this box... It won't budge because your applied force is less than the resisting force on it(98N).

So We need a force ≥98. So the least force is 98N. Nothing below this will move the Box

Answer 98N.

Answer:

See image

Explanation:

Plato

Answer:

A

Explanation:

0-2         1.0

2-4         0.5

4-6         0

The table of velocity of toy car is drawn below.

What is velocity ?

velocity is defined as rate of change of displacement of the object with respect to rate of change in time. In mathematics It is written as :

                                           \(\begin{aligned}v= \frac{\Delta d}{\Delta t}=\frac{d_{2}-d{1}}{t_{2}-t_1}\end{aligned}\)

considering time interval from t=0 sec to t=2 sec the distance travelled by the toy car is d=0m to d=2m. therefore, the velocity will be :

                                      \(\begin{aligned}v&=\frac{d_{2}-d{1}}{t_{2}-t_1}\\&=\frac{2-0}{2-0}\\&=1 \text{\:m/s}\end{aligned}\)

similarly for interval t = (2sec - 4sec ) and t = (4sec - 6sec) is also calculate and written in table below.

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Answer:

1) A = lost volts, B = lower, C = a small pressure, D, = Newtons kg, E = Modulation.

2) A = True(?), B = true, C = True, D = True, E = not sure sorry.

Explanation:

Answer:

v=u+at

v=21+1.4(11)

v=21+15.4

v=36.4

the electric power of the bulb is equal to 7.5 watts. The energy every second. In other words, 24 joule of energy are sent to the surroundings every second. The lightbulb has a 24 watt capacity.

The voltage of an average incandescent bulb, which is intended to match that voltage generated by a standard electrical outlet, is about 110 Volts. The average wattage (the quantity of energy produced) of a lightbulb is 60 Watts. A typical incandescent bulb has a lumen rating of about 600.

The formula to calculate the electric power can be written as:

P = IV

where P is the power, V is the potential difference and I is the electric current in the circuit.

Given, the potential difference of the bulb, V = 3 V

The current flowing through the bulb, I = 2.5 A

The power of the bulb, P = 3 × 2.5 = 7.5 Watt

Therefore, the electric power of the bulb is equal to 7.5 watts.

Electric power is the result of the circuit's current flow and the potential difference that has been put across it. Power = VI. Watt is the unit of power (W).

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Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

Mugabe gained power by using political strategies, forming alliances, and exploiting his status as a liberation hero within ZANU-PF.

Robert Mugabe, the former president of Zimbabwe, was able to build power through a combination of political strategies and alliances. One key factor was his involvement in the liberation struggle against white minority rule in Rhodesia (now Zimbabwe).

Mugabe emerged as a prominent figure within the Zimbabwe African National Union (ZANU) party, which later merged with the Zimbabwe African People's Union (ZAPU) to form the Zimbabwe African National Union - Patriotic Front (ZANU-PF). Mugabe's role as a liberation hero and his ability to mobilize support among the majority black population of Zimbabwe gave him a strong power base.

Within ZANU-PF, Mugabe strategically positioned himself and gained influence by forming alliances and outmaneuvering rivals. He rose to become the party's leader and played a key role in negotiating the Lancaster House Agreement in 1979, which paved the way for Zimbabwe's independence in 1980. Mugabe became the country's first prime minister and later transformed the position into an executive presidency, consolidating his authority.

Mugabe maintained power through various means, including controlling key institutions such as the military, intelligence agencies, and the ruling party. He also utilized patronage networks, distributing resources and positions to loyal supporters within the party and government. Mugabe's policies, such as the controversial land reform program, further solidified his power base by appealing to nationalist sentiments and redistributing land from white farmers to black Zimbabweans.

However, Mugabe's consolidation of power was also marked by authoritarianism, human rights abuses, and a declining economy. His grip on power faced challenges over the years, including opposition movements, internal party factions, and economic crises. Ultimately, his rule came to an end in 2017 when he was ousted from power following a military intervention.

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Answer:

The three best answers are:

Electric fields can be positive or negative  (depending on source)

Electric fields can attrace or repel objets         (assuming the object is charged)

Electric forces are strongest near the charged object       E ∝ 1 / R^2

Answer:

144 kg m^2/s

Explanation:

Answer:

Explanation:

First job is to convert 72 km/hr to m/s:

\(72\frac{km}{hr}\) × \(\frac{1000m}{1km}\) × \(\frac{1hr}{3600s}\) = 2.0 × 10¹ m/s

Now to find the acceleration which is

\(a=\frac{v_f-v_0}{t}\) and filling in:

\(a=\frac{2.0*10^1-0}{11.5}=1.7\frac{m}{s^2}\) That's part a. Part b want to know how far the car can get in 11.5 seconds (because that's the time it takes for the car to get to 72 km/hr). Since we know that the car can get 2.0 × 10¹ meters in 1 second, that means that in 11.5 seconds, the car can get 11.5(2.0 × 10¹) which is 230 meters.

Answer:it c

Explanation: I took the test

The best type of lighting to use in a geriatric medical office is natural or daylight-like lighting.

Natural or daylight-like lighting is considered the best choice for a geriatric medical office. It closely mimics the natural light conditions found outdoors, providing a balanced spectrum of light that is beneficial for both patients and healthcare professionals.

Natural lighting has several advantages. First, it enhances visual acuity and reduces eye strain, which is particularly important for elderly patients who may have age-related vision changes. Second, it helps regulate circadian rhythms and improve sleep-wake cycles, which can positively impact overall well-being and mood. Third, natural lighting creates a more pleasant and calming environment, potentially reducing stress and anxiety for patients.

To maximize natural lighting, large windows or skylights can be incorporated into the design of the medical office. In areas where natural light is limited, artificial lighting systems that closely resemble daylight can be installed, such as full-spectrum LED lights. These lights emit a broad spectrum of colors similar to natural sunlight, promoting a more comfortable and soothing atmosphere within the geriatric medical office.

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Answer:

a) Shadow distance

10 cm in front of the mirror.

b) Zoom in the shadow

The shadow formed is the same height as the object and is placed also at the centre of curvature of the mirror as shown in the attached image to this solution.

c) The nature of the shadow

The shadow formed is real, inverted, same size as the object and formed at the centre of curvature.

Explanation:

English Translation

Objects as high as 3 cm are placed at a distance of 10 cm in front of a concave mirror with 10 cm curvature. Determine:

a) Shadow distance

b) Zoom in the shadow

c) The nature of the shadow

Solution

The mirror equation is given as

(1/f) = (1/v) + (1/u)

f = focal length of the mirror = (radius of curvature)/2 = 10/2 = 5 cm

v = image distance = ?

u = object distance = 10 cm

We can then calculate the shadow' s distance from the mirror thus

(1/5) = (1/v) + (1/10)

(1/v) = 0.2 - 0.1 = 0.1

v = (1/0.1) = 10 cm

b) Zoom in the shadow

Since the object is placed at the centre of curvature, as shown in the attached image, the image is formed at a point of intersection of rays. The image formed is the same height as the object and is placed also at the centre of curvature of the mirror.

c) The nature of the shadow

Since the mirror is a concave mirror, the image is real and formed in front of the mirror. The image is also inverted and formed at the centre of curvature of the mirror.

Hope this Helps!!!

Answer:

Consensus: the extent to which other people behave in the same way in a similar situation.

Consistency: refers to the way in which minority influence is more likely to occur if the minority members share the same belief and retain it over time.

Distinctiveness: refers to the extent to which a specific action engaged in by an individual is unusual or uncommon for that particular individual

It makes a fairly small circle over the course of a day since it is so close to the celestial equator. As a result, Polaris is a trustworthy indicator of the north since it always remains in nearly the same location in the sky.

The stars move continuously and are not fixed. When the daily arcing motion of the stars across the sky caused by the rotation of the earth is taken into account, you are left with a pattern of stars that appears to remain constant.

The star in the middle of the star field, Polaris, appears to be stationary. Polaris sits almost straight under the equator, hence this star is said to move the least. Due to Earth's rotation on its axis, the other stars seem to move in arcs.

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ANSWER:

1. C. Wave X and Wave Y share the same speed.

2. D. The speed of a wave is affected by the properties of the medium it is traveling through, not amplitude.

STEP-BY-STEP EXPLANATION:

The amplitude of a wave does not affect the speed at which the wave travels. Both wave A and wave B travel at the same speed. The speed of a wave is only altered by alterations in the properties of the medium through which it travels.

Therefore, in the first art the correct answer is C. Wave X and Wave Y share the same speed.

If the medium is uniform (does not change), the speed of the wave will be constant.

Therefore, the correct answer is: D. The speed of a wave is affected by the properties of the medium it is traveling through, not amplitude.

There is really only one way a sealed alpha source can hurt you is by ingestion .

The term "ingestion" describes the process of putting something into your body by swallowing it. When eating, drinking, biting one's fingernails, smoking, or ingesting mucus that has been polluted through inhalation, chemicals can be ingested. Systemic contamination happens when toxins enter the digestive tract and are either absorbed into the bloodstream through the stomach lining or after passing through the small intestine.

Consumption of a substance by an organism is referred to as ingestion. Ingestion is the process of taking food into the body from the mouth, chewing it, and then swallowing it to be processed further. In single-celled organisms, it happens when cell membranes absorb chemicals.

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If Lee pushes horizontally with a force of 78N on a 29kg mass for 16m across a floor. The amount of work Lee did is: 1,248J.

Given data:

Mass of the object , m = 29kg

Force, F = 78N

Displacement, d = 16m

Now let find the amount of work using this formula

Work = F × dcosθ

Let plug in the formula

Work = 78 × 16cosθ

Work = 1,248J

Therefore we can conclude that the work done is 1,248J.

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Answer:

it's a.... a furnace burning coal

Answer:

0.893 rad/s in the clockwise direction

Explanation:

From the law of conservation of angular momentum,

angular momentum before impact = angular momentum after impact

L₁ = L₂

L₁ = angular momentum of bullet = + 9 kgm²/s (it is positive since the bullet tends to rotate in a clockwise direction from left to right)

L₂ = angular momentum of cylinder and angular momentum of bullet after collision.

L₂ = (I₁ + I₂)ω where I₁ = rotational inertia of cylinder = 1/2MR² where M = mass of cylinder = 5 kg and R = radius of cylinder = 2 m, I₂ = rotational inertia of bullet about axis of cylinder after collision = mR² where m = mass of bullet = 0.02 kg and R = radius of cylinder = 2m and ω = angular velocity of system after collision

So,

L₁ = L₂

L₁ = (I₁ + I₂)ω

ω = L₁/(I₁ + I₂)

ω = L₁/(1/2MR² + mR²)

ω = L₁/(1/2M + m)R²

substituting the values of the variables into the equation, we have

ω = L₁/(1/2M + m)R²

ω = + 9 kgm²/s/(1/2 × 5 kg + 0.02 kg)(2 m)²

ω = + 9 kgm²/s/(2.5 kg + 0.02 kg)(4 m²)

ω = + 9 kgm²/s/(2.52 kg)(4 m²)

ω = +9 kgm²/s/10.08 kgm²

ω = + 0.893 rad/s

The angular velocity of the cylinder bullet system is 0.893 rad/s in the clockwise direction-since it is positive.

The appropriate SI base unit for measuring each of the following

1. the diameter of a large pizza ⇒ Meter

2. the mass of a pencil ⇒ Kilogram

3. the length of the soccer field⇒ Meter

4. the distance from your home to school ⇒Meter

5. the mass of the bicycle⇒Kilogram

6. the time to play a song⇒second

A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation. Any additional quantity of that type can be stated as a multiple of the measurement unit.

Thus, we can represent the appropriate SI base unit for measuring each

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Answer:

whattt

Explanation:

The crossover point is 56,000 miles, rounded to the closest whole number. The total cost of owning the hybrid vehicle and the alternative vehicle is the same at this point.

The formula for the total cost is :

Total Cost = Vehicle Purchase Cost + (Operating Cost per Mile x Miles per Year x Useful Life of Vehicle)/Miles per Gallon x Average Fuel Price per Gallon

For the hybrid vehicle:

Total Cost = $18,000 + ($0.14 x 16,500 x 14)/33 x $3.68 = $47,672.03

For the alternative vehicle:

Total Cost = $20,000 + ($0.10 x 16,500 x 14)/36 x $3.68 = $47,672.22

Solving these two equations for M gives :

$18,000 + ($0.14 x 16,500 x 14)/33 x $3.68 = $20,000 + ($0.10 x 16,500 x 14)/36 x $3.68

M = 55998

If the vehicle's expected mileage exceeds 56,000 miles, the alternative vehicle becomes more cost-effective; if it falls below 56,000 miles, the hybrid vehicle becomes more cost-effective.

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 1.The statement "An ideal gas only has kinetic energy" is false the kinetic energy is associated with the random motion of the gas molecules, but the gas molecules can also have potential energy due to intermolecular forces or external fields.2.The statement "A friction less piston that expands in a vacuum  (external pressure is 0) does work on its surroundings." is true .

An ideal gas does not only have kinetic energy. In addition to kinetic energy, an ideal gas also possesses potential energy and internal energy.  Internal energy accounts for both the kinetic and potential energy of the gas molecules.So given statement is false .

A friction less piston that expands in a vacuum and experiences an external pressure of 0 does work on its surroundings. Work is defined as the transfer of energy that occurs due to the application of a force over a displacement. In this case, as the piston expands, it exerts a force on the surroundings and undergoes a displacement. Since the external pressure is 0, the piston does work without any opposing force. Thus, the piston does work on its surroundings in this scenario.So given statement is true .

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The total weight of your catch is 29.06 pounds.

Weight is the force exerted on an object due to the gravitational pull of the Earth or any other celestial body. It is a measure of the mass of an object multiplied by the acceleration due to gravity.

The total weight of your catch can be calculated by adding the weights of the individual fish.

Weight of the bass: 2.33 lb

Weight of the rock cod: 12.2 lb

Weight of the saimon: 14.53 lb

To find the total weight, add these weights together:

Total weight = 2.33 lb + 12.2 lb + 14.53 lb

Total weight = 29.06 lb.

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Answer:

human body is answer according to our studies

The volume of the air that we have from the question is 829 L

The ideal gas equation, also known as the ideal gas law, is a fundamental equation in thermodynamics that describes the relationship between the pressure (P), volume (V), temperature (T), and number of moles (n) of an ideal gas.

We know that;

PV = nRT

P = pressure

V = volume

n = Number pf moles

R = gas constant

T = Temperature

Then;

Number of moles of the air = 1000 g/29 g/mol

= 34.5 moles

Then;

V = nRT/P

V = 34.5 * 0.082 * 293/1

V = 829 L

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