How many solar masses does the white dwarf need to consume in order to nova?

Answer:

SF4 + 3H2O → H2SO3 + 4HF

Explanation:

I found it

Answer:

c

Explanation:

Answer:

index fossil

Explanation:

Amy's distance is 800 meters since she runs 2 laps around the 400 meter track. Her displacement is 0 meters because displacement refers to the change in position from the starting point to the end point, and since she ends up back where she started, the displacement is zero.

Distance refers to the total length covered in a particular path, regardless of direction or position. Amy runs 2 laps, and each lap is 400 meters, so her total distance is 800 meters (400 meters per lap multiplied by 2 laps).

Displacement, on the other hand, refers to the change in position from the starting point to the end point. Since Amy ends up back at the starting point after completing her 2 laps, her displacement is zero. Displacement takes into account direction and position, and in this case, there is no net change in position from the start to the end, resulting in a displacement of zero.

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As the diameter of the wire approaches to zero, the resisitance approaches  infinity.

Electrical resistance is the physical capacity of any body to oppose the flow of electric current even when there is an applied potential difference, capacity calculated by Ohm's First Law, and, according to the International System of Units (IS), is measured in ohms.

With that being said, and knonwing that:

R = Resistance; p = Resistivity; L = Length; d = Diameter

It is possible to calculate the resistance of the wire by:

\(R = p\frac{L}{A}\)

Where A is calculated by:

\(A = \frac{\pi d^{2} }{4}\)

Changing in the first formula:

\(R = p\frac{L}{\pi d^{2} } \\\\R = p\frac{4L}{\pi d^{2} }\)

Knowing that when the diameter tends to zero resistance tends to infinity, it is possible to say that resistance of the wire will tend to infinity when the diameter approaches zero.

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Answer:

The resistance approaches infinity.

Explanation:

100% Correct

Explanation:

1) To calculate the number of turns in the secondary coil, we will use the formula for the turns ratio:

Turns ratio = (Primary voltage / Secondary voltage) = (Primary turns / Secondary turns)
Rearranging the formula for secondary turns, we get:
Secondary turns = Primary turns * (Secondary voltage / Primary voltage)

Now, we can plug in the given values:

Secondary turns = 380 turns * (6.30 V / 120 V)
Secondary turns = 380 turns * 0.0525
Secondary turns ≈ 19.95

To two significant figures, the secondary turns are approximately 20 turns.

2) To calculate the current in the primary coil, we will use the power conservation principle (assuming no power loss in the transformer):

Primary power = Secondary power
Primary voltage * Primary current = Secondary voltage * Secondary current
Rearranging the formula for primary current, we get:
Primary current = (Secondary voltage * Secondary current) / Primary voltage

Now, we can plug in the given values:

Primary current = (6.30 V * 15.0 A) / 120 V
Primary current = 94.5 A / 120 V
Primary current ≈ 0.7875 A

To two significant figures, the current in the primary coil is approximately 0.79 A.

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Answer:

MA of a lever is 2. It means the lever can lift a load of 2 times heavier than the effort

Explanation:

Weight=force=300N

height=2m

time=6seconds

power=?

now,

power (p)=f×h÷t

power=300×2÷6

power=100w

therefore,A man develops 100 watt power in 6 seconds.

Answer:

Density of water = 1   (1 g / ml)

.25 L = 250 ml   (milleters)

mass of flask = 250 ml * 1 g / ml = 250 g     (water to fill flask)

Equivalent mass of Hg = 13.5 * 250 g = 3375 g = 3.375 kg

Answer:

I think it's 3

Explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

If you dip your finger more frequently into the water, the wavelength of the waves will shorten.

Hence, the correct option is A.

If you dip your finger more frequently into the water, the wavelength of the waves will shorten. The wavelength of a wave is the distance between two consecutive crests or troughs.

When you dip your finger more frequently, you are increasing the frequency of the waves. According to the wave equation (v = fλ), where v is the velocity of the wave, f is the frequency, and λ is the wavelength, if the frequency increases while the velocity remains constant, the wavelength must decrease to maintain the equation.

Therefore, If you dip your finger more frequently into the water, the wavelength of the waves will shorten.

Hence, the correct option is A.

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Answer:

002 bc eause iy is

Simon hurls the ball at Keesha at a speed of 5 km/h. In relation to the ground, the ball is moving toward Keesha at a velocity of (12-5) = 7 km/hr. As a result, the response is: 7 km/hr.

It may sound difficult, but velocity is simply the act of moving quickly in a particular direction. A velocity of an item is defined as the rate of change of the object's location with regard to a frame of reference and time. Due to the fact that it is a vector quantity, velocity must be defined in terms of both magnitude (speed) and direction.

Simon never specified which frame the "5 km/hr" is measured in terms of distance, despite the fact that Simon are working with frames of reference here.

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Interference is a phenomenon that occurs when two waves meet and combine to form a resultant wave.

While the basic principle of interference is the same for all types of waves, there are some differences between the interference of light waves and water waves.

One key difference is that light waves are electromagnetic in nature, while water waves are mechanical in nature.

This means that the mechanism of wave propagation is different, and the way in which waves interfere is also different.

Light waves can interfere constructively or destructively depending on the phase difference between them, while water waves can interfere constructively or destructively depending on the amplitude of the waves.

Another difference is the wavelength and frequency of the waves. Light waves have much shorter wavelengths and higher frequencies than water waves.

This means that light waves can exhibit interference patterns that are more complex and exhibit more subtle variations than water waves.

In summary, while the basic principles of interference are the same for all waves, the specific mechanisms and properties of light waves and water waves mean that their interference patterns are different in nature.

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The composition of the particles forming Saturn's rings is primarily made up of water ice.So option D is correct.

The Saturn's Rings are the set of 7 rings that surround the planet of Saturn. They are the most noticeable feature of Saturn and are classified according to their order in the planet, starting from the closest ones (D Ring) and ending with the farthest ones (F Ring). Each of the rings is made up of millions of individual objects ranging in size from tiny grains to enormous chunks that are miles in diameter.The composition of the particles forming Saturn's rings:Saturn's rings are formed of many tiny ice particles, which range in size from tiny grains to objects that are several meters in diameter. The rings are comprised of 99.9 percent ice, which is mostly water ice, but also some methane and ammonia ice. The ice particles in the rings are coated with silicates, carbon, and organic materials, and their size distribution ranges from smaller than a grain of sand to larger than a house.

Therefore option D is correct.

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The correct order of increasing impedance is:

C. PZT, gel, skin, matching layer

Impedance is a measure of the opposition to the flow of sound waves in a medium. It depends on the density and speed of sound in the material. In the given options, the order of increasing impedance can be determined by considering the properties of the materials involved.

PZT (lead zirconate titanate) has a higher impedance than gel, skin, and the matching layer. PZT is a piezoelectric material commonly used in ultrasound transducers and has a higher density and speed of sound, leading to higher impedance.

Gel has a lower impedance compared to PZT but higher impedance than skin and the matching layer. Gel is used as a coupling medium between the transducer and the skin to enhance acoustic coupling and minimize impedance mismatch.

Skin has a lower impedance than both gel and the matching layer. It is the outermost layer and acts as an interface between the transducer and the biological tissue.

The matching layer has the lowest impedance among the given options. It is designed to match the impedance of the PZT to the impedance of the tissue being imaged, facilitating efficient sound transmission.

Therefore, the correct order is C.

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The depth of oil is 43 m

We know that

P = ρ g h

where,

P = Pressure of fluid

ρ = Density of fluid

g = Acceleration due to gravity

h = Depth of fluid

Given that,

P = 46 psig = 3.2 * \(10^{5}\) N / \(m^{2}\)

s = 0.75

ρ = 0.75 * 1000 = 750 kg / \(m^{3}\)

g = 9.81 m / \(s^{2}\)

Here we round the value of g = 10 m / \(s^{2}\)

h = P / ρ g

h = ( 3.2 * \(10^{5}\) ) / ( 750 * 10 ) = 42.67 m

h = 43 m

Fluid pressure is the measurement of force per unit area that acts on an object in the fluid.

Therefore, the depth of oil is 43 m

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Both copper and silver are good conductor of electricity but only copper is used for making electrics wire and not silver because silver is expensive material when compared to copper.

Despite the fact that silver is an excellent heat conductor, it is not used in the production of electrical wire because of its high cost. Silver is a valuable metal that is used to make jewelry, high-value coins, and electroplating. Because of this, silver is not used to make electric wires. When it is exposed to air, silver quickly oxidizes and becomes tarnished.

Copper is nearly always utilized because of its low cost and the fact that it is an adequate conductor for the majority of uses. In comparison to copper, silver has a resistivity that is just marginally lower; yet, due to its higher density, the two elements are almost comparable in terms of their ratio of resistivity to mass.

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Answer: D

Explanation: just completed this question on a p e x

Answer:

The expression for the exposed surface temperature is \( T_{0}=T_{\infty}+\dfrac{R_{fin}}{R_{ins}+R_{fin}}(T_{w}-T_{\infty})\)

Explanation:

Given that,

Diameter = 25 mm

Conductivity = 60 W/mK

Temperature of wall = 200°C

Thickness = 200 mm

maximum temperature = 100°C

Temperature of ambient air = 30°C

Convection coefficient = 17.0 W/m²K

We need to calculate the heat transfer equation

Using diagram of thermal circuit

\(q_{f}=\dfrac{T_{0}-T_{\infty}}{R_{fin}}\)

\(\dfrac{T_{0}-T_{\infty}}{R_{fin}}=\dfrac{T_{w}-T_{\infty}}{R_{ins}+R_{fin}}\)

\(T_{0}-T_{\infty}=\dfrac{R_{fin}}{R_{ins}+R_{fin}}(T_{w}-T_{\infty})\)

\(T_{0}=T_{\infty}+\dfrac{R_{fin}}{R_{ins}+R_{fin}}(T_{w}-T_{\infty})\)

Hence, The expression for the exposed surface temperature is \( T_{0}=T_{\infty}+\dfrac{R_{fin}}{R_{ins}+R_{fin}}(T_{w}-T_{\infty})\)

Answer:

telescope

Explanation:

| AMNH. Before telescopes were invented, people gazed at the night sky with amazement and dreamed of a closer look. The invention of the telescope in 1608 gave humans their chance to explore the vastness of the Universe.

Answer:

The invention of the telescope

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The magnitude of the unknown height of the projectile is determined as 16.1 m.

The magnitude of the height of the projectile is calculated as follows;

H = u²sin²θ/2g

H = (36.6² x (sin 29)²)/(2 x 9.8)

H = 16.1 m

Thus, the magnitude of the unknown height of the projectile is determined as 16.1 m.

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The number of oscillations of the toy in a second is 1.25.

The given parameter:

The frequency of an object is calculated as follows;

\(f = \frac{n}{t} \\\\\)

where;

The number of oscillations of the toy in a second is calculated as follows;

\(1.25 = \frac{n}{1} \\\\n = 1.25\)

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Please see attached picture for answer an explanation.

The moment of force about point O, is determined from the product of force and perpendicular distance

The moment of a force about a given point is the torque exerted by the applied force on the object. The moment of force is determined from the product of force and perpendicular distance of the applied force.

P = Fd

where;

Thus, the moment of force about point O, is determined from the product of force and perpendicular distance.

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Answer:Examples of input devices include keyboards, mouse, scanners, cameras, joysticks, and microphones.

pls mark brainliest

Explanation:

Answer:

539.55 N for both

Explanation:

F=ma

Mass is given at 55kg

And when finding gravitational force gravity's constant is an acceleration of 9.81m/s

F=(55)(9.81)

F= 539.55 N (for both)

Normal force cancels out gravitational force that's why we don't fall throught the floor.

We push down on the floor due to gravitational force but normal force keeps us upright pushing an equal amount back.

Answer:

oxygen and carbon dioxide

Explanation:

are soluble in water animal and plants can utilize these dissolved gases for resporation and photosynthesis and hence can survived in water