An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 84.7 rad/s in 2.96 s. The magnitude of the angular deceleration is 47.2 rad/s2. Determine the initial angular speed of the fan.

a) As carbon dioxide is formed the shorter candle's flame goes off first, followed by the taller candle. This shows, that in absence of air, the flame goes off. Hence, the air is necessary for combustion.

b) Although both reactants are common home chemicals and foods, care should be taken to avoid splashing in the eyes, and protective clothing should be used. The reaction's byproducts can be disposed of by thoroughly filling the sink with water and washing down the sink with no chemicals touched.

Baking soda and vinegar react with one another to create carbon dioxide gas. The carbon dioxide gas sinks to the bottom of the bowl because it is heavier than the air around it. More and more carbon dioxide gas is produced as the reaction progresses, progressively filling the bowl as it does so. The flame will go out owing to a shortage of oxygen once the level of carbon dioxide reaches that of the flame.

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Given data:

* The total current in the system is I = 2.8 A.

* The resistance of resistors connected in parallel is,

Solution:

The equivalent resistance of the system is,

Substituting the known values,

According to Ohm's law, the voltage across the battery in terms of the current and equivalent resistance is,

Thus, the voltage across the battery is 21.5 volts.

The wavelength λ of light when it is traveling in air depends on the color or frequency of the light meaning they have the same amplitude and direction of oscillation.


Light is an electromagnetic wave that travels through space at a constant speed of approximately 299,792,458 meters per second. The wavelength of light is the distance between two consecutive points on the wave that are in phase, meaning they have the same amplitude and direction of oscillation.

The wavelength of light can be calculated using the formula: λ = c / f. Where λ is the wavelength, c is the speed of light in air (approximately 3 x 10^8 m/s), and f is the frequency of the light. To find the wavelength of light when it is traveling in air, you need to have information about its frequency. Once you have the frequency, you can use the above formula to calculate the wavelength.

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The true statements are Osteoclasts are involved in the remodeling process, and bone remodeling is a combination of bone deposition and resorption, bones are remodeled to accommodate the stresses put on them.

The remodeling cycle contains three consecutive phases: resorption, throughout which osteoclasts digest old bone; reversal, when mononuclear cells are discovered on the bone surface; and formation when osteoblasts lay down new bone until the contracted bone is completely replaced. Bone remodeling is an active and dynamic process that depends on the correct balance between bone resorption by osteoclasts and bone settling by osteoblasts. Therefore, these two functions must be tightly associated not only quantitatively, but also in time and space.

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The energy can be generated in this case from natural gas.

Natural gas can be used for energy generation in a smaller space, such as in a residential or commercial building. Natural gas can be used in a variety of applications, including for space heating, hot water production, cooking, and electricity generation.

In smaller spaces, natural gas-fired furnaces, boilers, water heaters, and stoves are commonly used. These appliances burn natural gas to produce heat, which can be used for space heating, water heating, and cooking. In addition, natural gas can be used to generate electricity through the use of natural gas-fired power plants or microturbines.

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Answer:

Science is also a dog because sometimes it can can be nice such as a flower growing or the pretty flower turning into a flower that can attack you

Explanation:

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

In marketing, variety is a strategy employed to offer a subset of products or services with different characteristics to suit the needs of consumers.

The four keys elements involved in planning and marketing are: product, price, place and promotion.

The marketing strategy is important because sets out the business goals, including the ideal costumers and how they are reached.

It is the set of activities that make it possible to effectively communicate a product or service offering to the consuming public.

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The generator of a car idling at 1500 rpm produces 17.4 V. So, the output voltage of the generator at a rotation speed of 2700 rpm is 31.3 V.

The formula for the voltage output of a generator:
E = (NBA)/60
where E is the voltage output, N is the number of turns in the coil, B is the magnetic field strength, and A is the area of the coil. The formula also includes a constant factor of 60 to convert from seconds to minutes.

Assuming that the number of turns in the coil and the area of the coil remains constant, we can simplify the formula to:
E ∝ NB
This means that the voltage output is directly proportional to the number of turns and the magnetic field strength. Therefore, if the rotation speed (rpm) is increased from 1500 to 2700, the voltage output should increase in proportion.

To find the new voltage output, we can use the following equation:
E2/E1 = rpm2/rpm1
where E1 is the original voltage output at 1500 rpm, E2 is the new voltage output at 2700 rpm, rpm1 is the original rotation speed of 1500 rpm, and rpm2 is the new rotation speed of 2700 rpm.

Plugging in the values, we get:
E2/17.4 V = 2700 rpm/1500 rpm

Solving for E2, we get:
E2 = (17.4 V) x (2700 rpm/1500 rpm) = 31.3 V

Therefore, the output voltage of the generator at a rotation speed of 2700 rpm is 31.3 V (to three significant figures), assuming nothing else changes. The units for voltage are volts (V).

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Answer:

Drawing the triangle:

H / x = tan 52.2 = 1.29

H / (4.6 - x) = tan 28.8 = .550

H = 1.29 x

H = .55 * 4.6 - .55 x

1.84 x = 2.53        combining equations

x = 1.38

4.6 - 1.38 = 3.22

Total base of triangle = 1.38 + 3.22 = 4.6

H / x = tan 52,2 = 1.29

H = 1.29 * 1.38 = 1.78 height of triangle

Check:

1.78 / 3.22 = tan 28.9    

This agrees with the given value of 28.8

Answer:

99kg m/s

Explanation:

\(p=m\Delta v \\\\\Delta v=20-0.20=19.8m/s \\\\p=5(19.8)=99\)

Hope this helps!

Answer:

Solution,

Initial speed(u)=20 m/s

final speed(v)=0.20 m/s

change in momentum∆P=m(v-u)

∆P=5(0.20-20)

∆P=5*19.8

∆P=99 kg m/s

Momentum of the body is decreased by 99 kg m/s

hope this helps...

Good luck on your assignment...

Answer:

Liquid

Explanation:

Water...

- below 0 degrees Celsius is a solid.

- above 0 degrees Celsius is a liquid.

- above 100 degrees Celsius is a gas.

Answer:  metals, non metals and semi metals

Explanation:

No, you cannot take your phone in a tanning bed. Tanning beds use ultraviolet (UV) light to help people achieve a dark, even tan. However, this light can damage electronic devices, such as cell phones.

The heat generated by the bulbs and the strong UV radiation can damage the phone’s internal components and cause the phone to overheat. This can lead to short circuits and permanent damage to the phone.

In addition to the damage caused by UV light, the high temperatures of the tanning bed may cause the phone to overheat, leading to further damage, such as battery failure. Overheating may also cause the phone to shut down or restart unexpectedly, resulting in data loss and further damage.

Finally, taking your phone into a tanning bed may be a distraction. Tanning beds require the user to remain still and relaxed in order to achieve optimal results. Having your phone in the bed may disrupt this process and lead to a less effective tanning session.

For all of these reasons, it is not recommended to take your phone into a tanning bed. Doing so may cause irreparable damage to the device and may disrupt the tanning process.

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Answer:

An electrically polarized object can have zero net charge, while a charged object cannot have zero net charge.

I hope this helps :D

Answer:

16.67 kg

Explanation:

Acceleration = 3 m/s^2

Force = 50 N

Force = mass * acceleration

mass = force / acceleration

mass = 50 / 3

mass = 16.67 kg

Answer:

20 N exerts no torque about the pivot.

14 N exerts a counterclockwise torque of 14 * .3 = .42 N-m

6  exerts a clockwise torque of 6 * .7 = .42 N-m

The meter stick will not turn because there is no net torque on the meter stick.

Answer:

See below

Explanation:

Find the slope of the graph (gradient)

  pick a convenient point with easy to read coordinates...say  (30 s  , 150 m)

       150 m / 30s = 5 m/s

The only non-contact force listed is gravity

When you change the thickness of the wire in a circuit, option B. the resistance (R) and current (I) will also change, but the voltage (V) will remain constant.

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). As the thickness of the wire changes, the cross-sectional area changes, which in turn affects the resistance. Thicker wires have a larger cross-sectional area, resulting in lower resistance, while thinner wires have a smaller cross-sectional area, resulting in higher resistance. Therefore, changing the thickness of the wire will cause a change in resistance.

According to Ohm's Law (V = IR), the voltage (V) in a circuit is equal to the product of the current (I) and the resistance (R). If the voltage is kept constant, and the resistance changes due to the thickness of the wire, the current will also change to maintain the relationship defined by Ohm's Law. When the resistance increases, the current decreases, and vice versa.

However, it's important to note that changing the thickness of the wire will not directly affect the voltage. The voltage in a circuit is determined by the power source or the potential difference applied across the circuit and is independent of the wire thickness. As long as the voltage source remains constant, the voltage across the circuit will remain constant regardless of the wire thickness. Therefore, the correct answer is option B.

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Answer:

Mercurio

Masa

3,285 × 10^23 kg

Mercurio está a una distancia promedio de 48 millones de millas (77 millones de kilómetros) de la Tierra.

Venus

Masa

4.867 × 10^24kg

En su punto más cercano a la Tierra, Venus está a unos 61 millones de kilómetros (38 millones de millas) de distancia.

tierra

Masa

5.972 × 10^24kg

Marte

Masa

6,39 × 10^23 kg

La distancia mínima de la Tierra a Marte es de unos 54,6 millones de kilómetros (33,9 millones de millas).

Júpiter

Masa

1.898 × 10^27kg

Debido a que ambos planetas viajan en una trayectoria elíptica alrededor del sol, la distancia de Júpiter a la Tierra cambia constantemente. Cuando los dos planetas están en su punto más cercano, la distancia a Júpiter es de solo 365 millones de millas (588 millones de kilómetros).

Saturno

Masa

5.683 × 10^26kg

Su distancia más cercana a la Tierra es de aproximadamente 1.200 millones de kilómetros (746 millones de millas)

Urano

Masa

8.681 × 10^25kg

la distancia entre la Tierra y Urano cambia diariamente. Lo más cerca que están los dos es 1.600 millones de millas (2.600 millones de kilómetros).

Neptuno

Masa

1.024 × 10^26kg

Cuando Neptuno y la Tierra se alinean en el mismo lado del sol, en su punto más cercano, están a solo 2,700 millones de millas (4,300 millones de kilómetros)

masa de Plutón =

1.30900 × 10^22 kilogramos

Plutón se encuentra a 4670 millones de millas (7500 millones de kilómetros) de la Tierra. En su punto más cercano, los dos están a solo 2660 millones de millas (4280 millones de km) de distancia.

Answer:

Explanation:

Acceleration is the time rate of change, or the rate, of the velocity. Therefore, the slope y/x of a speed vs time graph would give the acceleration. If the acceleration is said to be positive, the graph would be a straight line that is at a constant increase over time.

Answer:

Numerical Methods are mathematical way to solve certain problems.Whether the equations are linear or nonlinear, efficient and robust numerical methods are required to solve the system of algebraic equations.

Analytical solutions are exact solutions based on mathematical principles.

However, the governing partial differential equations of fluid flow are complex and cannot be solved by analytical means. The partial differential equations are therefore converted into a system of algebraic equations that are subsequently solved through numerical methods to provide approximate solutions to the governing equations.

Although we rarely reach on exact answer , we can get really close to the exact answer much quicker than solve analytically.

Answer:

oh my god

Explanation:

how long answer is this

Energy is defined in science as the ability to move matter or change matter in some other way.

Answer:

To find the average speed after 2 minutes, we need to calculate the total distance covered in 2 minutes and divide it by 2.

Total Distance after 2 minutes = 75m

Total Time after 2 minutes = 2 minutes

Average Speed after 2 minutes = Total Distance / Total Time

Average Speed after 2 minutes = 75m / 2 min = 37.5 m/min

Therefore, the average speed after 2 minutes is 37.5 m/min.

I Hope This Helps!

According to the solving, the volume that this gold nugget occupies is 1.29 cm³.

Volume is a standard measure of three-dimensional space that is occupied. It is typically mathematically represented using standard or SI-derived units. Volume and the concept of length are connected. It is sometimes referred to as the object's capacity.

d= m/ V

m=  dV

V= m/d

The mass of the gold nugget is 25 grams.

The density of gold is 19.32 g/cm³.

We know that,

m= Vd

To find out the Volume(V),

V= m/d

V= (25 g)/(19.32 g/cm³)

V= 1.29 cm³.

According to the solving, the volume this gold nugget occupies is 1.29cm³.

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Answer:

The correct answer is

Explanation:

The charge is not different upon its exit versus its entry into the lightbulb because charge is conserved.

What is electrical charge?

Electrical charge, q is defined as the property of a matter which is carried by come of the elemental particles of matter which determined how it will be affected when placed in an electromagnetic field.

The unit of electrical charge is coulombs, C.

Th elementary particles of matter and their respective charges are:

protons: positive charge

electrons : negative charge

neutrons: no charge

According to a basic law of electricity, electrical charge is conserved. Therefore, the quantity of charge that enters the lightbulbs is equal to the quantity of charge that leaves the lightbulbs.

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The dot product of u and v is approximately 736.71.

The dot product between two vectors u and v is defined as:

u · v = ||u|| ||v|| cos(θ)

where ||u|| is the magnitude of vector u, ||v|| is the magnitude of vector v, and θ is the angle between u and v.

In this problem, we are given u = 15, v = 50, and the angle between u and v is 5/6. To find the dot product, we first need to find the magnitudes of u and v:

||u|| = |15| = 15

||v|| = |50| = 50

Next, we can use the alternative form of the dot product to find the dot product of u and v:

u · v = ||u|| ||v|| cos(θ) = (15)(50) cos(5/6) ≈ 736.71

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To find u · v using the alternative form of the dot product, we can use the formula:

u · v = ||u|| ||v|| cos(θ)

where ||u|| is the magnitude (or length) of vector u, ||v|| is the magnitude of vector v, and θ is the angle between u and v.

First, we need to find the magnitudes of u and v:

||u|| = sqrt(15^2) = 15

||v|| = sqrt(50^2) = 50

Next, we need to convert the angle between u and v to radians, since the cosine function uses radians. We know that 180 degrees is equal to π radians, so we can use the conversion factor:

(5/6) * π radians / 180 degrees = (5/6) * π/180 radians

Now we can plug in the values we found into the formula:

u · v = 15 * 50 * cos(5/6 * π/180)
     = 750 * cos(0.087)
     = 750 * 0.996
     = 747.15 (rounded to two decimal places)

Therefore, the dot product of u and v is approximately 747.15.

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