Which energy sources input can cause the turbine (wooden wheel)tobspin and generate electrical energy?

Answer:

e

Explanation:

An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force.

Answer:

If an object is at rest, it has no velocity - its velocity is zero. More precisely, since velocity is a vector, in this case the velocity would be the null vector.

Explanation: Hope this helps

The number of times the drops were repeated and the mass of the balloons may be controlled variables that are kept constant during the experiment to isolate the effect of the height of the window on the time it takes for the balloons to reach the ground.

What is Isolated System?

An isolated system is a concept in thermodynamics and physics that refers to a system that does not exchange energy or matter with its surroundings. It is a closed system with respect to both energy and matter, meaning that no energy or matter is transferred across its boundaries. In an isolated system, the total energy, including both kinetic and potential energy, remains constant over time. This is known as the principle of conservation of energy.

The experiment's variable in this case is the height of the window from which the balloons are dropped. The students are specifically testing the effect of gravity, which is influenced by the height from which an object falls. By varying the height of the window, the students are manipulating the independent variable (height of the window) to observe the effect on the dependent variable (time it takes for the balloons to reach the ground).

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Answer:

12tfr

Explanation:

as per as calculations

Answer:

Oblique

Explanation:

I think that's the answer I was told this but forgot if this is the right answer if not then sorry

Answer:

yeas

Explanation:

beac×high ×sides and after you fins tims you need to add beac+high and add the sides together and add what did you got from beac,high and sides and thin you will add every thing together

Answer:

0.25p.a

Explanation:

force=15N area=60m²

so pressure =force/area =15N/60m²=0.25p.a

Answer:

the fact that Venus shows phases

Explanation:

The umbrella diagram appears to have different colors on each segment due to the phenomenon of color reflection and absorption.

Each segment of the umbrella has a different color because it reflects and absorbs different wavelengths of light.

The colors we see are actually a result of the visible light spectrum, which includes colors ranging from red to violet. When white light, which is a combination of all colors, hits the surface of an object, that object absorbs some colors and reflects others. The colors that are reflected back to our eyes are what we perceive as the object's color.

In the case of the umbrella, each segment has a different material and color dye that absorbs and reflects certain wavelengths of light. For example, a red segment appears red because it absorbs all colors of visible light except for red, which it reflects back to our eyes. Similarly, a blue segment appears blue because it absorbs all colors of visible light except for blue, which it reflects back to our eyes.

Overall, the different colors on each segment of the umbrella are a result of the unique combination of materials and dyes used, which selectively absorb and reflect different colors of visible light.

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Answer:

roddy i guess?

Explanation:

Answer:

Dababy and Roddy Ricch. Jason's songs use to be fire years back but now....not so much.

Explanation:

The number of significant figures in the calculation for the perimeter should match the least number of significant figures among the measurements, which is 2. Therefore, the calculation for the perimeter should be reported with 2 significant figures.

When performing calculations, it is important to consider the rules of significant figures. The rule states that the result of a calculation should be rounded to match the least number of significant figures in the given measurements.

In the given measurements, the least number of significant figures is 2, which is found in Side 3 (2.000 m). Therefore, when calculating the perimeter of the seven-sided figure, the result should be rounded to 2 significant figures.

For example, if the calculated perimeter is 41.756 meters, it should be rounded to 42 meters since 2 is the least number of significant figures. This ensures that the result aligns with the precision of the measurements provided.

By adhering to the rules of significant figures, we can maintain consistency and accuracy in our calculations and ensure that the level of precision is appropriate for the given data.

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Answer:

The brain analysis technique which allows for identifying which part of the brain is functional per human activity is Neuroimaging.

Explanation:

Brain Imaging (or Neuroimaging) involves the use of direct observation in a living organism of the structure, function and anatomy of its central nervous system.

Cheers!

Answer:

14 km away and a turn of 90°

Explanation:

brailiest pls pls pls

Answer:

195 is it current pls tell

The amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

Let's start with calculating the amount of energy that the AC unit consumes in a day.

Power = Voltage x Current

The power consumption of the AC unit is 3500 Watts.

Time = Power / Voltage x Current (Ohm's Law)

Assuming that your home uses 120 volts AC, the amount of current needed is as follows:

Current = Power / Voltage

= 3500 W / 120 V

= 29.16 A.

The time required to operate the AC unit for four hours per day is:

Time = Power / Voltage x Current

= 3500 W x 4 hr / 120 V x 29.16 A

= 12 hours.

Now, if you can generate a consistent power of 300 watts on the exercise bike, the amount of time you'd need to work out each day to keep the AC unit running for four hours would be:

Time required for the exercise bike = Time for AC Unit x (Power required by AC unit / Power generated by exercise bike)

Time required for the exercise bike = 4 hours x (3500 W / 300 W)

Time required for the exercise bike = 46.7 hours.

Using an exercise bike to generate electricity is a great idea, but it would be difficult to generate enough energy to keep large home appliances running, such as a central AC unit.

In this case, the amount of time required to generate energy on the exercise bike is almost impractical, and other sources of energy should be considered.

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Answer:

112m (to 3sf)

Explanation:

work done = force × distance

      4700J = 42N × distance  

  distance = 4700J ÷ 42N

                 = 112m (to 3sf)

Heat received by cold water equals heat lost by hot water. 60°C is the ultimate temperature.

An evaluation of an object or substance's warmth or coolness in relation to a reference value.

a measurement of how much heat is required to raise the temperature of a material by one degree Celsius for every gramme.

The unit of measurement for specific heat is Joules per gramme per degree Celsius (J/g °C).

Let c represent the water's specific heat.

based on the calorimetry concept.

Heat received by cold water equals heat lost by hot water.

200 * c * (80 - T) = 100 * c * (T - 20) (T - 20)

∴ 200c (80-T) = 100c(T-20) (T-20)

∴2 (80-T) = T - 20

∴160-2T=T-20

∴ 160+20 = T +2T

∴180 = 3T

∴T = 60 C.

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The equation of the force between the two masses separated by distance r, is determined as Gmm/r².

The equation of the force between the two masses is determined from Newton's law of universal gravitation as shown below.

f = Gmm/r²

where;

Thus, the equation of the force between the two masses separated by distance r, is determined as Gmm/r².

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The coefficient of kinetic friction between the bag and the ground is found to be 0.0251. It represents the ratio of the frictional force to the normal force acting between them.

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The wavelength of light falling on double slits separated by 0.2 mm, if the third-order maximum is at an angle of 3°, is 0.3835 mm.

Step 1: Calculate the angle of diffraction

The angle of diffraction is given by:

θ = arcsin (m λ / d)

Where m = order of the diffraction(3rd order in this case), λ = wavelength of light, and d = separation between the slits.

Step 2: Substitute the given values

θ = arcsin (3 λ / d)

θ = arcsin (3 λ / 0.2 cm)

Step 3: Solve for λ

Using the inverse sine function, λ = 0.2 cm / 3 * sin (θ)

Substituting θ = 18° , we get

λ = 0.2 cm / 3 * sin (18°)

λ = 0.067 cm = 67 mm

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The sun uses nuclear fusion to generate its energy. In the very distant future, the sun will eventually run out of fuel is A. All the hydrogen and smaller elements will eventually fuse into larger elements until fusion is no longer possible.

The sun generates its energy through nuclear fusion, a process in which lighter elements, primarily hydrogen, fuse together to form heavier elements like helium. As the sun continues to burn through its hydrogen supply, it will gradually create heavier elements through fusion.

Once the core hydrogen is depleted, the sun will start fusing helium into heavier elements like carbon and oxygen. This process will continue until the sun has exhausted its fuel supply, and the fusion of heavier elements becomes energetically unfavorable. When this stage is reached, the sun will no longer be able to sustain fusion, resulting in a decrease in its energy output. As the sun's energy production declines, it will undergo a series of changes, ultimately evolving into a white dwarf, a small and dense remnant of its former self.

It's important to note that options B, C, and D are not accurate explanations of the sun's eventual fate. Nuclear fusion does not involve combustion (option B), nor does it create more energy than is consumed (option C). Additionally, the sun's fuel depletion will not occur due to atoms splitting in the core (option D); instead, the fusion of lighter elements into heavier ones will lead to the end of the sun's fuel supply. Therefore the correct option A

The Question was Incomplete, Find the full content below :

The sun uses nuclear fusion to generate its energy. In the very distant future, the sun will eventually run out of fuel.

How will this happen?

A. All the hydrogen and smaller elements will eventually fuse into larger elements until fusion is no longer possible.

B. All the flammable elements, like hydrogen, will combust resulting in no more available fuel.

C. The sun will not run out of fuel since fusion continually creates more energy than is consumed.

D. The sun will stop burning once all the atoms in the core have split.

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1 C2H2 + 2H2= C2H6

H2+H2+H2=H6

you already have C2

By applying Newton's second law of motion the value of x component is 1 m/s^2 and the y component has the value of 0 m/s^2.

In contrast to the first law of motion, the second law of motion deals with the behaviour of objects when all external factors are in equilibrium.The second rule of motion, which is more quantitative, is frequently applied to determine what occurs when a force is present.
According to Newton's second rule, an object's acceleration is determined by its mass and the total force that is operating on it.The mass of the body has an inverse relationship with acceleration, which is exactly proportionate to the total force exerted on the body. This implies that as the force exerted on an object increases, so does the object's motion. Similar to how an object's motion decreases as its mass increases, so does its mass.
By applying Newton's second law of motion:-

for x component:

4N - 2N = 2a

2= 2a and a = 1 m/s^2.

for y component:

3N-(2N+1N)= 2a

a= 0m/s^2.

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The closer together a magnet's magnetic field lines are, the stronger the magnetic field in that region.

The density or proximity of magnetic field lines represents the strength and intensity of the magnetic field produced by the magnet.

In regions where the magnetic field lines are close together, it indicates a concentrated and strong magnetic field. This implies that the magnetic field has a higher magnitude and can exert a greater force on magnetic materials or charged particles within that region.

Conversely, when the magnetic field lines are spaced farther apart, it indicates a weaker magnetic field. The density of field lines decreases, suggesting a lower strength and intensity of the magnetic field.

The pattern and distribution of magnetic field lines around a magnet provide a visual representation of the magnetic field's strength and direction. The closer the field lines, the stronger the magnetic field, and the farther apart they are, the weaker the magnetic field.

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Answer:

4 hrs

Explanation:

40/10 = 4 hrs

Answer:

960 Watt

Explanation:

From the question,

Electric power = Voltage squared/Resistance

P = V²/R ..................... Equation 1

Where P = power, V = Voltage, R = Resistance

Given: V = 120 volts, R = 15 ohms.

Substitute these values into equation 1

P = 120²/15

P = 14400/15

P = 960 Watt

The speed is obtained as 3.3  * 10^9  miles per hour.

There are several units of speed. Let us recall that speed is the ratio of the distance covered to the time taken. The speed of light is given as 3 * 10^8 m/s.

Now we have the speed as warp 1.71 which corresponds to five times the speed of light.

Thus the speed is 5(3 * 10^8 m/s) = 1.5 * 10^9 m/s

To convert from m/s to miles per hour';

1 meter/second = 2.2 miles per hour

1.5 * 10^9 meter/second=  1.5 * 10^9 meter/second * 2.2 miles per hour/1 meter/second

= 3.3  * 10^9  miles per hour

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Gravity and wind speed are vector quantity , Temperature , Volume , Number of pages in a book are the scalar quantity

In terms of their size and direction, the physical quantities may be divided into scalars and vectors.The examples of physical quantities that can be sort into vectors and scalars are temperature, gravity, volume, number of pages in a book, wind speed and direction, etc.

The following quantities are:

Temperature- The temperature is a scalar number since it just needs the magnitude (heat content) and not the direction.

Gravity - It is comparable to the force with which the Earth pulls an item that is always pointed toward its center. The amount is a vector since both magnitude and direction define it.

Volume - it is the pitch of a sound wave which is nothing but a form of energy which causes the sensation of hearing. Since the direction is not required to measure a sound level (determined by the corresponding frequency of the sound wave) but the only magnitude, therefore, it is a scalar.

The amount is a scalar since the number of pages in a book is entirely determined by a numerical value without the requirement for a direction.

Wind Speed and Direction - Since both the wind's magnitude in terms of speed and direction are necessary, the quantity is a vector.

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Answer: Some elements like potassium, uranium, and thorium are naturally radioactive and give off gamma rays as they decay, but all elements can be excited by collisions with cosmic rays to produce gamma rays. The HEND and Neutron Spectrometers on GRS directly detect scattered neutrons, and the Gamma Sensor detects the gamma rays.

Explanation: searching

The efficiency of the system, consisting of a 3-ohm heater submerged in 1200 grams of water, is approximately 101.2% based on the given information.

To determine the efficiency of the system, we need to calculate the energy input and the energy output.

The energy input is given by the formula:  Energy input = Voltage × Current × Time

Since the heater has a resistance of 3 ohms and operates at 6 amperes for 3.95 hours, we can calculate the energy input as follows:

Energy input = (Voltage × Current) × Time = (Voltage² / Resistance) × Time

Given that the voltage is unknown, we need to solve for it. We can use Ohm's law to find the voltage: Voltage = Current × Resistance = 6 A × 3 Ω = 18 V

Now we can calculate the energy input: Energy input = (18² / 3) × 3.95 = 381.6 Joules The energy output can be calculated using the specific heat capacity of water and the change in temperature: Energy output = (Mass of water + Water equivalent) × Specific heat capacity × Change in temperature

Given that the mass of water is 1200 grams, the water equivalent is 200 grams, the specific heat capacity of water is approximately 4.18 J/g°C, and the change in temperature is 70°C, we can calculate the energy output: Energy output = (1200 + 200) × 4.18 × 70 = 386,360 Joules

Finally, we can calculate the efficiency of the system: Efficiency = (Energy output / Energy input) × 100 Efficiency = (386,360 / 381.6) × 100 ≈ 101.2% Therefore, the efficiency of the system is approximately 101.2%.

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