. The naturally occurring charge on the ground on a fine day out in the open country is –1.00nC/m2 . (a) What is the electric field relative to ground at a height of 3.00 m? (b) Calculate the electric potential at this height. (c) Sketch electric field and equipotential lines for this scenario.

Answer:

Based on the options given, the most likely answer to this query is The square of the orbital periods of the planets are directly proportional to the cubes of their average distances from the Sun.  

Explanation:

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Answer:

0.18 watt

Explanation:

The following data were obtained from the question:

Current (I) = 0.1 A

Resistance (R) = 18 ohms

Power (P) =.?

P = I²R

Where

P is the power.

I is the current in the circuit.

R is the resistance.

With the above formula, we can obtain the power in the circuit as follow:

P = 0.1² × 18

P = 0.01 × 18

P = 0.18 watt

Therefore, the power in the circuit is 0.18 watt

Answer:

b. A vector may have either magnitude or direction.

Explanation:

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Answer:

Most minerals can be characterized and classified by their unique physical properties: hardness, luster, color, streak, specific gravity, cleavage, fracture, and tenacity.

A flowchart and write its pseudocode to convert temperature from Celsius to Fahrenheit is shown below.

The pseudocode for a program that requests for a number (temperature) from an end user, converts temperature from Celsius to Fahrenheit, and then prints or outputs (displays) the converted temperature to the user is written below.

In this context, a pseudocode to convert temperature from Celsius to Fahrenheit can be written as follows;

START

         Input "Enter a number" into variable F

         F = (9/5)C + 32

         PRINT C

STOP

In conclusion, we would use Microsoft Visio to create a flowchart that converts temperature from Celsius to Fahrenheit as shown in the image attached below.

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Answer:

C.

Explanation:

c. the source is written by the person who conducted the experiment. A primary source is an original piece of information created at the time under study. It can be a diary, a letter, a photograph, a recording, or any other type of artifact. It provides firsthand information about an event or topic, and is created by a person who was directly involved or witnessed it.

Spectral features that allow the differentiation of the product from the starting material can be identified using various techniques such as infrared spectroscopy and nuclear magnetic resonance spectroscopy.

The chemical structure of a substance determines its spectral features, making it possible to differentiate it from other substances. Spectroscopic techniques like nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy can be used to identify different types of molecular bonds, enabling the differentiation of different types of chemicals.NMR spectroscopy enables the determination of the types of atoms in a substance by analyzing the radiation emitted by the nucleus of the atom. On the other hand, IR spectroscopy identifies the types of chemical bonds in a substance by analyzing the infrared radiation absorbed by the sample.

Spectral features that differentiate the product from the starting material can be identified using various techniques such as infrared spectroscopy and nuclear magnetic resonance spectroscopy. NMR spectroscopy can determine the types of atoms in a substance by analyzing the radiation emitted by the nucleus of the atom, while IR spectroscopy can identify the types of chemical bonds in a substance by analyzing the infrared radiation absorbed by the sample. The chemical structure of a substance determines its spectral features, enabling its differentiation from other substances.

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The answer for Eating food from a uranium glass plate is safer is Choice C which is food is irradiated / not contaminated.

It is safer to eat food from a uranium glass plate because the uranium added to the glass will always be in the oxidized form used to color it. The uranium added to the glass will also be not soluble thus it will not be radioactive.

Thus, the reason for eating food safely from the uranium glass plate is it will not be contaminated

The other two options(alpha cannot penetrate skin or body and contains a low percentage of uranium) will be wrong because the plate will be completely non-radioactive.

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Answer:

A kg of cotton is heavier.

Explanation:

Because in air, cotton gets upthrust that's why weighing machine gives less weight than its actually have.

for eg: If cotton has 800g weight, the machine shows a kg(1kg) when measure in air due to upthrust.

I hope this will be helpful for you.

Answer: Due to atmospheric pressure 1 Kg of Cotton is slightly heavier than 1 kg of Iron.

Explanation: According to me cotton will be more lighter as air is a fluid and Archimedes principal applies on it. As cotton occupies more volume it will feel more up thrust and more loss in weight. That cotton is more heavier .

Answer:

60m/s

Explanation:

v=frequency ×wave length

v signifies the speed

The speed of a wave is the product of its frequency and wavelength. Hence the speed of the wave with a frequency of 20 Hz and 30 cm wavelength is 0.6 m/s.

Frequency of a wave is the number of wave cycles  produced at unit time. Thus it has the unit of s⁻¹ which is equivalent hertz Hz.

Wavelength of a wave is the distance it travels in a wave cycle or for a transverse wave the distance between two consecutive crests or troughs is called wavelength.

The relation between frequency v, wavelength \(\lambda\) and speed of a wave c is written as below:

\(c = v \lambda\)

By this expression it is clear that the speed of increases with frequecy and wavelength.

The frequency of the given vibrational source is 20 Hz and the wavelength is 3 cm or 0.03 m. Hence, the speed of the wave is calculates as follows:

c = 20 Hz × 0.3 m

  = 0.6 m/s.

Therefore, the speed of the wave is 0.6 m/s.

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Answer:

Mitochondria (animal) and Chloroplast (plant)

The speed of the wave of wavelength 0.21 m is 23.1 m/s. And the correct answer is 0A. 23.1 m/s.

The speed of a wave is calculated by multiplying the wavelength and the frequency of the wave.

To calculate the speed of the wave, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the speed of the wave is 23.1 m/s.

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Answer:

Approximately \(8.4 \times 10^{2}\; \rm N\), assuming that \(g = 9.8\; \rm m \cdot s^{-2}\).

Explanation:

Let \(m\) and \(a\) denote the mass and acceleration of Spiderman, respectively.

There are two forces on Spiderman:

The directions of these two forces are exactly opposite of one another. Besides, because Spiderman is accelerating upwards, the magnitude of \(F(\text{tension})\) (which points upwards) should be greater than that of \(W\) (which points downwards towards the ground.)

Subtract the smaller force from the larger one to find the net force on Spiderman:

\((\text{Net Force}) = F(\text{tension}) - W\).

On the other hand, apply Newton's Second Law of motion to find the value of the net force on Spiderman:

\((\text{Net Force}) = m \cdot a\).

Combine these two equations to get:

\(m \cdot a = (\text{Net Force}) = F(\text{tension}) - W\).

Therefore:

\(\begin{aligned}& F(\text{tension})\\ &= m \cdot a + W \\ &= m \cdot (a + g)\\ &= 76\; \rm kg \times \left(1.3\; \rm m \cdot s^{-2} + 9.8\; \rm m \cdot s^{-2}\right)\\ &\approx 8.4\times 10^{2}\; \rm N\end{aligned}\).

By Newton's Third Law of motion, Spiderman would exert a force of the same size on the strand of web. Hence, the size of the force in the strand of the web should be approximately \(8.4\times 10^{2}\; \rm N\) (downwards.)

The difference between the magnitudes of stars will be 4.0 magnitudes.

The term magnitude is used to refer to a star's brightness.

Two different magnitudes are used by astronomers to describe stars. The brightness of the star as seen from Earth is known as its apparent magnitude. The perceived brightness is the basis for the magnitude scale. Astronomers can use this to establish the star's exact absolute magnitude. The real brightness of the star is measured by its absolute magnitude.

According to the question, the difference between the magnitude of two stars will be :

\(m_b-m_a\)=2.5 log(\(I_A/I_B\)) where,

\(m_a\) and \(m_b\) is the magnitude of star A and Star B and,

\(I_A\) and \(I_B\) is the intensity of star A and Star B

As per the given value, the intensity ratio of the two stars is :

\(I_A/I_B\)=40

So, by using the formula :

\(m_B-m_A\)=2.5 log(\(I_A/I_B\))

=2.5 log (40)

=4.0 magnitudes.

Hence, the magnitude difference between two stars is 4.0 magnitudes.

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H NMR spectroscopy is used to determine both the location and type of hydrogen atoms in a molecule, whereas 13C NMR is used to determine only the number of carbon atoms in a molecule.

H NMR (Proton Nuclear Magnetic Resonance) spectroscopy is used to determine both the location and type of hydrogen atoms in a molecule. It provides information about the chemical environment and connectivity of hydrogen atoms within a compound. By analyzing the chemical shifts and splitting patterns in an H NMR spectrum, one can deduce the types of hydrogen atoms present in the molecule (such as methyl, methylene, or aromatic hydrogens) as well as their relative positions.

On the other hand, 13C NMR (Carbon-13 Nuclear Magnetic Resonance) spectroscopy is primarily used to determine the number and types of carbon atoms in a molecule. It provides information about the carbon environments and can help distinguish between different carbon types, such as sp3 hybridized carbons (like in alkanes), sp2 hybridized carbons (like in alkenes), or carbonyl carbons. 13C NMR spectra reveal the chemical shifts of carbon atoms and provide insights into the carbon connectivity within a molecule.In summary, H NMR is used to determine the location and type of hydrogen atoms, while 13C NMR is used to determine only the types of carbon atoms present in a molecule.

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(a) The temperature at the triple point of water is 32.018°F (0.01°C) and the pressure is 611.657 Pa (0.006 atm).

(b) The temperature at the triple point of carbon dioxide is -69.9°F (-56.6°C) and the pressure is 518.2 kPa (5.172 atm).

For water, the triple point occurs at a temperature of 32.018°F (0.01°C) and a pressure of 611.657 Pa (0.006037 atm). This means that at this specific temperature and pressure, water can exist in equilibrium as ice, liquid water, and water vapor.

For carbon dioxide, the triple point occurs at a temperature of -56.56°F (-49.2°C) and a pressure of 518.15 kPa (5.1 atm). This means that at this specific temperature and pressure, carbon dioxide can exist in equilibrium as solid dry ice, liquid carbon dioxide, and carbon dioxide gas.

It's important to note that the triple point is a specific point for each substance, and that other substances will have different triple points. The units given in the question are important to note as well, as they may differ from units used in other contexts.

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conducting this experiment, you will be able to observe how changes in capacitance affect plate charge, stored energy, and voltage in a disconnected, but charged, capacitor.

To design an experiment to determine what happens to the plate charge, stored energy, and voltage when the capacitance of a disconnected (but charged) capacitor is changed, you can follow these steps:

1. Set up the experiment by connecting a charged capacitor to a power supply and a voltmeter.

2. Measure and record the initial voltage across the capacitor using the voltmeter.

3. Disconnect the capacitor from the power supply.

4. Change the capacitance of the capacitor by adding or removing capacitors in parallel or series.

5. Measure and record the new voltage across the capacitor using the voltmeter.

6. Calculate the change in voltage by subtracting the initial voltage from the new voltage.

7. Use the formula Q = CV to calculate the plate charge, where Q is the charge, C is the capacitance, and V is the voltage.

8. Calculate the change in plate charge by subtracting the initial plate charge from the new plate charge.

9. Calculate the stored energy using the formula E = 0.5 * CV^2, where E is the stored energy.

10. Calculate the change in stored energy by subtracting the initial stored energy from the new stored energy.

By conducting this experiment, you will be able to observe how changes in capacitance affect plate charge, stored energy, and voltage in a disconnected, but charged, capacitor.

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Answer:

A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. ... Free-falling objects do not encounter air resistance.

Explanation:

The cycle time of the entire line is 30.00528 minutes per part.

To calculate the cycle time of the entire line, we need to consider the processing times, failures, and repairs of both the milling machine and the turning machine.

For the milling machine:

Mean processing time (t0) = 15 mins

Standard deviation of processing time (sigma0) = 3 mins

Mean time to failure (MTTF) = 750 mins

Mean time to repair (MTTR) = 200 mins

For the turning machine:

Mean processing time (t0) = 15 mins

Standard deviation of processing time (sigma0) = 3 mins

Mean time to failure (MTTF) = 110 mins

Mean time to repair (MTTR) = 38 mins

We also know that the arrival rate to the milling machine is 1.2 parts/hr, with a coefficient of variation (CV) of 1.

To calculate the cycle time, we can use the following formula:

Cycle time = Processing time + Failure time + Repair time

Processing time:

The processing time is the sum of the mean processing times of the milling machine and the turning machine:

Processing time = t0 (milling machine) + t0 (turning machine) = 15 mins + 15 mins = 30 mins

Failure time:

The failure time is the inverse of the MTTF, considering the arrival rate:

Failure time = 1 / (MTTF * Arrival rate) = 1 / (750 mins * (1.2 parts/60 mins)) = 0.00111 parts/min

Repair time:

The repair time is the inverse of the MTTR, considering the coefficient of variation (CV):

Repair time = 1 / (MTTR * CV) = 1 / (200 mins * 1.2) = 0.00417 parts/min

Cycle time:

Cycle time = Processing time + Failure time + Repair time = 30 mins + 0.00111 parts/min + 0.00417 parts/min

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No, the distance to a star cannot be determined strictly by the intensity of its radiation.

Stars emit radiation in the form of electromagnetic waves across the entire electromagnetic spectrum. This includes everything from radio waves, microwaves, and infrared radiation to visible light, ultraviolet radiation, X-rays, and gamma rays. The specific types and amounts of radiation emitted by a star depend on its temperature, size, age, and other properties.

Most of the radiation emitted by stars is in the form of visible light, which is what allows us to see them in the night sky. The colors of stars, ranging from red to blue, indicate their temperature, with cooler stars appearing redder and hotter stars appearing bluer.

In addition to visible light, stars also emit ultraviolet radiation, which can cause damage to living cells and is absorbed by the Earth's atmosphere. X-rays and gamma rays are also emitted by some stars, particularly those that are very hot or undergoing extreme nuclear reactions, and can only be detected with specialized telescopes.

The radiation emitted by stars plays an important role in shaping the universe, influencing the formation and evolution of galaxies, stars, and planets. It is also the source of energy that powers life on Earth, as it is ultimately responsible for driving photosynthesis in plants and other organisms.

Here in the Question,

The intensity of a star's radiation can provide valuable information about its properties, such as its luminosity and surface temperature, distance estimation requires additional measurements and calculations.

One way to determine the distance to a star is through the method of parallax. This involves observing the apparent shift in a star's position against the background of more distant stars as the Earth moves in its orbit around the Sun. The amount of shift is measured and used to calculate the star's distance.

Another method is the use of standard candles, which are objects of known intrinsic brightness, such as certain types of supernovae or Cepheid variable stars. By comparing the observed brightness of a standard candle with its known intrinsic brightness, astronomers can determine its distance based on the inverse square law of radiation, which states that the intensity of radiation decreases with the square of the distance.

Therefore, while the intensity of a star's radiation provides important information about its properties, it is not sufficient to determine the star's distance, which requires additional measurements and calculations.

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Answer:

V is greater

Explanation:

because v intial at that time V final is the that speed which it is going at that time

Answer:

The speed of the wave is 15ms .

Explanation:

Answer:

Yes

Explanation:

It is possible because a stone on the ground is at rest with respect to earth but at the same time earth is moving around the sun. That means everything on earth is moving so with respect to sun the stone is also moving. That is how the stone is in rest also and is in motion also.

The impedance of the given AC circuit containing resistor and inductor parallel to each other is 55.71 ohms.

The given parameters;

The inductive reactance is calculated as follows;

\(\omega _l = 2\pi fl\\\\\omega _l = 2\times 3.142 \times 2,000\times 10\times 10^{-3} = 125.68 \ ohms\)

The impedance is the total opposition to the flow of current in the AC circuit and it is calculated as follows;

\(Z _{total} = \frac{1}{\frac{1}{Z_l} + \frac{1}{Z_R} } \\\\Z _{total} = \frac{1}{\frac{1}{125.68} + \frac{1}{100} }\\\\Z _{total} = 55.71 \ ohms\)

Thus, the impedance of the given circuit is 55.71 ohms.

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The speed of a wave with a frequency at 46 Hz as well as a wavelength = 1.7 meters is 78.2 m/sec.

The Greek letter λ is frequently used to represent wavelength. The name wavelength is also occasionally used to refer to modulated waves, their sinusoidal envelopes, or waves created by the interference of multiple sinusoids.

The distance between each trough or the difference between each wave's crest and the next one. One of "yardsticks" used to gauge radiation levels is this. The SI unit measuring wavelength is the metre, which is frequently abbreviated as m. The wavelength of an object is measured using its multiples and fractions.

Wavelength = 1.7 m

Frequency = 46 Hz

v denotes the wave's speed, w its wavelength, and f its frequency.

f = v/w,

= 46 =v/1.7

v = 78.2 m/sec

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The minimum required power input for the refrigerator is 20.4 W.

The minimum required power input for the refrigerator can be calculated using the formula: P = Q/t, where P is the power input, Q is the heat removed from the refrigerated space, and t is the time taken to remove that heat.

First, we need to calculate the heat removed by the refrigerator, which can be found using the formula: Q = m*c*(T2-T1), where m is the mass of the refrigerated space, c is the specific heat capacity of the substance being refrigerated, T2 is the initial temperature (-17 °C), and T1 is the final temperature (26 °C).

Assuming a mass of 1 kg and a specific heat capacity of 2.5 J/g°C for the substance being refrigerated, the heat removed is 1575 J.

Dividing this by the rate of heat removal (13.6 J/s) gives us the time taken (115.8 seconds).

Finally, plugging in the values, we get the minimum required power input of 20.4 W.

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The minimum required power input for the refrigerator is 20.4 W.

The minimum required power input for the refrigerator can be calculated using the formula: P = Q/t, where P is the power input, Q is the heat removed from the refrigerated space, and t is the time taken to remove that heat.

First, we need to calculate the heat removed by the refrigerator, which can be found using the formula: Q = m*c*(T2-T1), where m is the mass of the refrigerated space, c is the specific heat capacity of the substance being refrigerated, T2 is the initial temperature (-17 °C), and T1 is the final temperature (26 °C).

Assuming a mass of 1 kg and a specific heat capacity of 2.5 J/g°C for the substance being refrigerated, the heat removed is 1575 J.

Dividing this by the rate of heat removal (13.6 J/s) gives us the time taken (115.8 seconds).

Finally, plugging in the values, we get the minimum required power input of 20.4 W.

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Having clean teeth prevents you from getting diseases such as the flu and cholera. Therefore, the correct option is option A.

The study the tooth structure is the focus of the anatomical discipline known as dental anatomy. Dental occlusion, or the contact between teeth, is not included in its field of study, but rather the development, appearance, as well as categorization of teeth are.

Because it deals with naming teeth and their structures, dental anatomy also serves as a taxonomic science. Having clean teeth prevents you from getting diseases such as the flu and cholera.

Therefore, the correct option is option A.

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Answer: Trough

Explanation: The point labeled C in the wave diagram above is the TROUGH of the wave motion. The trough of a wave motion identifies or signifies the point of least or minimum Displacement by measuring the downward Displacement of the wave. The point A is the CREST which is the opposite of the trough, signifying the point of maximum or upward Displacement of the wave cycle.

Point B is the wave amplitude which signifies the maximum extent of vibration from the equilibrium position of a wave. The point labeled D refers to the wavength of the wave motion which is the distance between successive crest or troughs of a wave motion.

Answer:

V = 2.86 m/s

Explanation:

Given:

m = 1400 kg

p = 4000 kg·m/s

_________________

V- ?

Momentum:

p = m·V

Velocity:

V = p / m

V = 4000 / 1400 ≈ 2.86 m/s