if 49.8 g s is allowed to react as completely as possible with 103.9 g f2(g) , what mass of the excess reactant is left?

Resolving power refers to the ability of a lens to distinguish between two closely spaced objects. It is determined by the wavelength of light and the numerical aperture of the lens.

Magnifying power, on the other hand, refers to the ability of a lens to enlarge the size of an object. It is determined by the focal length of the lens.
The term "parfocal" refers to a type of lens system where multiple lenses have the same focal point when the focus is adjusted. This means that when switching between different lenses, the focus remains the same, making it easier for the user to switch between lenses without losing focus.
Differentiating between the resolving power and magnifying power of a lens involves understanding their respective functions. Resolving power refers to the ability of a lens to distinguish between two closely spaced objects, or in other words, the clarity with which the lens can produce an image. Magnifying power, on the other hand, refers to the degree to which a lens can enlarge the image of an object.

The term "parfocal" is used to describe a set of lenses that, when interchanged on a microscope or other optical instrument, maintain their focus on the same object. This means that when you switch from one parfocal lens to another, only minimal adjustments to the focus are needed, allowing for a seamless transition between lenses with different magnifying powers.

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Resolving Power: It is the ability of a lens to separate or distinguish between closely spaced objects, reflecting the detail that can be seen with the lens.

Magnifying Power: It denotes how much larger an object appears through a lens compared to its actual size. High magnification doesn't necessarily mean better image quality.

Parfocal: This term refers to lenses that remain in focus even when the magnification or focal length changes. It enables swift adjustments in magnification without needing constant refocusing.

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Answer:

2nm

Explanation:

You have the following expression:

subtract 5 both sides of the equation:

Take into account that the absolute value of any number is equal to the same number but positive.

Then, you have:

and

Then, solve the previous equations:

5x - 8 = -27 add 8 both sides

5x = -27 + 8

5x = -19 divide by 5

x = -19/5

5x - 8 = 27 add 8 both sides

5x = 27 + 8

5x = 32 divide by 5

x = 32/5

Then, the solutions of the given equations are:

x = -19/5

x = 32/5

Answer:

4.8 A

Explanation:

Voltage = current x resistance

(V = IR)

12 = I (0.5 +2)

I = 4.8 A

Answer:

Explanation:

Using the below formula

Speed of sound = ( distance between observers) *2/(total time taken)

Now putt the given values ,

time taken = 0.80 sec

distance = 256 m

hence

V of sound= 256*2/0.80

V of sound = 640 m/sec

Dealing with continuously variable data such as sound and light waves is called signal processing.

Signal processing is the manipulation of signals to extract useful information or transform them into a desired form. It is a broad field that encompasses many different applications, including audio and video processing, communication systems, radar systems, and control systems.

Signal processing techniques can be used to analyze and manipulate sound waves, such as filtering out unwanted noise, compressing or expanding dynamic range, or modifying the frequency spectrum of a signal. In the case of light waves, signal processing techniques can be used to remove noise, enhance contrast or color, or manipulate the spatial frequency content of an image.

There are many different tools and techniques that can be used in signal processing, depending on the specific application. Some common techniques include Fourier analysis, which decomposes a signal into its frequency components, and digital signal processing, which involves the use of digital algorithms to manipulate signals.

Overall, signal processing is a fundamental aspect of many modern technologies and is used in a wide range of applications, from audio and video processing to medical imaging and telecommunications.

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Answer:

false

Explanation:

Answer: The difference is that Mass is the amount of matter in an object. Mass is closely related to inertia. The greater the mass of an object, the greater the inertia. Weight is not the same as mass. Weight is associated with an object's location.

Explanation: Hope this was helpful

Radio waves traveling through the ionosphere at high latitudes experience quick and unpredictable oscillations, which is known as high-latitude scintillation.

The auroral border, or area of the ionosphere where the aurora borealis (northern lights) appear, is typically connected with scintillation. However, high-latitude scintillation can occasionally be seen equatorward of the auroral boundary depending on the circumstances. The cause of this phenomenon is the presence of ionospheric irregularities that go beyond the auroral oval, such as irregularities in plasma density brought on by equatorial spread F (ESF). ESF can produce significant ionosphere-wide anomalies that lead to scintillation at lower latitudes. This may occur when the sun is active more intensely or when particular ionospheric circumstances favor the production of these anomalies.

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Answer:

It's change will form the nitride ion

Answer:

Explanation:

A plane mirror is the kind you look into when you look into a "regular" mirror. The image you see is right-side-up. These images are virtual. Real images are always upside down and are made by mirrors that are "parabolic" in shape. Virtual images are always right-side-up.

The energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.

To calculate the energy per photon, we can use the equation: E = hf, where E represents the energy, h is the Planck's constant (6.62607015 × 10^-34 J·s), and f is the frequency of the photon. Given that the frequency is 1260 kHz, we need to convert it to hertz (Hz) by multiplying it by 10^3:

Frequency = 1260 kHz × 10^3 = 1.26 × 10^6 Hz

Now, we can substitute the values into the equation:

E = (6.62607015 × 10^-34 J·s) × (1.26 × 10^6 Hz)

E = 8.33929859 × 10^-28 J

The answer is given in scientific notation as 8.34 × 10^-28 J. However, the question specifically asks for the answer in the format of 0.00×10^0. To achieve this, we can multiply the result by 10^3 and adjust the exponent accordingly:

E = (8.33929859 × 10^-28 J) × (10^3)

E = 8.33929859 × 10^-25 J

Thus, the energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.

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The force due to air pressure, is approximately 836,532 Newtons.

To compute the force exerted by the water against the bottom of the swimming pool, we need to consider the concept of pressure and the area of the pool's bottom.

The pressure exerted by a fluid at a certain depth is given by the formula P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the depth.

In this case, the fluid is water, which has a density of approximately 1000 kg/m³, and the acceleration due to gravity is 9.8 m/s².

The depth of the pool is given as 3.3 m. Substituting these values into the formula, we can calculate the pressure at the bottom of the pool:

P = (1000 kg/m³)(9.8 m/s²)(3.3 m) = 32,340 Pa

To determine the force exerted by the water against the bottom, we need to multiply this pressure by the area of the pool's bottom. The area is calculated by multiplying the length and width of the pool:

Area = 6.0 m × 4.3 m = 25.8 m²

Now, we can calculate the force using the formula Force = Pressure × Area:

Force = (32,340 Pa)(25.8 m²) = 836,532 N

Therefore, the force exerted by the water against the bottom of the swimming pool, without considering the force due to air pressure, is approximately 836,532 Newtons.

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Answer:

There is no force in space.

Explanation:

Weight is the gravitational force acting on the mass as in space there is no gravity so weight appeares as zero

Answer:

It is because of gravity that your weight of a certain mass becomes zero in space.

Explanation:

Answer:

Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction.

A measure of how quickly a conductor moves across a field. The voltage induced increased as the conductor moved through the field more quickly. The induced voltage and speed are directly inversely proportional.

Current can only flow when a circuit is closed or complete, hence, unless the circuit is completed current will not flow

What is Electro-Magnetic Induction?

This a phenomenon whereby a wound wire or a soft core of conductor made to cut across magnetic line of force and an E.M.F is generated, this E.M.F forces current to flow if the circuit is completed.

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The correct answer is "Your latitude." The number of degrees of arc that Polaris (the North Star) is above the horizon depends on your latitude.

Polaris is located very close to the North Celestial Pole, which is the point in the sky directly above Earth's North Pole. If you are at the North Pole (latitude 90 degrees North), Polaris would appear directly overhead at an angle of 90 degrees above the horizon. As you move south from the North Pole, the angle decreases. At the equator (latitude 0 degrees), Polaris would appear on the horizon, or at an angle of 0 degrees above the horizon.

Therefore, the correct answer is "Your latitude." The other options you mentioned, such as mass, the core, and spiral, are not directly related to the angle at which Polaris appears above the horizon.

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Answer:

option A

Explanation:

the diameter is twice the length of the radius

hope it helps

Question A.

i. the force you need to apply to the box to move it down the hill at a constant speed is 500 N.

ii. the acceleration of the piano down the ramp is 4.90 m/s^2.

Question b.

the acceleration of the car down the ramp is 5.42 m/s^2, and the velocity of the car at the top of the ramp is 23.7 m/s.

We apply Newton's Second Law of Motion, which states that the net force acting on an object is equal to the product of its mass and acceleration:

F_net = m*a

v_f = v_i + at

d = v_it + 0.5at^2

Given values: :

Force F = 13000 N

Angle of incline θ = 30°

Mass of the car m = 1200 kg

we find  the component of the force that is parallel to the incline, which will cause the car to move down the ramp:

F_parallel = Fsin(θ) = 13000sin(30°) = 6500 N

we then find  acceleration of the car using Newton's Second Law:

F_net = m*a

a = F_net / m

a = F_parallel / m

a = 6500 N / 1200 kg

a = 5.42 m/s^2

we then  the velocity of the car at the top of the ramp using the kinematic equations:

v_f^2 = v_i^2 + 2ad

d = 125 m

v_i = 0 (the car starts from rest)

v_f = sqrt(2ad)

v_f = sqrt(25.42 m/s^2125 m)

v_f = 23.7 m/s

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Answer:

When one object exerts a force on another object, the second object exerts the same size force on the first object

Explanation:

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

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Answer:be narsanda

Explanation: 456

Answer:

B 85.8m/s

Explanation:

frequency(Hz) = 220

wavelength(m) = 0.39

formula for Speed of a wave

Speed = Wavelength x Frequency

speed = 0.39 × 220

speed = 85.8m/s

i hope this helped

Answer:  B. 85.8 m/s ✅

Explanation: The speed of a wave can be calculated using the equation:

Velocity = Frequency * Wavelength

Given that the frequency of the wave is 220 Hz and the wavelength is 0.39 m, we can plug these values into the equation:

Velocity = 220 Hz * 0.39 m

The speed of the wave is 85.8 m/s or approximately 309 km/h or 192 mi/h ✅

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We know that substances expand with high temperatures and contract with low temperatures, therefore, the bridge will contract and the answer is b.

An electromagnet would have the greatest strength if its wire were wrapped around a core made of copper.

This is the strength of an electromagnet which increases with increase in the number of turns of the coil, thickness of the coil and magnetic field strength.

emf = NBA/t

The strength of an electromagnet also increases with increase in current and voltage flowing in the loop.

Copper is better conductor of electricity when compared to aluminum and iron.

Thus, an electromagnet would have the greatest strength if its wire were wrapped around a core made of copper.

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Answer:

Yes please message me and I will help you

Explanation:

Answer:

25,000,000 Km ;)

Explanation:

Answer:

111dB

Explanation:

First, find the intensity of the sound using the formula I = Power / 4 x pi x radius ^2

So

60.0 / (4 x 3.14 (6.25)^2)

= 0.122

Then plug that into the equation to find sound level, which is 10log( I / Io)

Io being (1 x 10^-12)

So

10log(0.122 / 1 x 10^-12)

= 111dB

Hope this helps :)

Answer:

Explanation:

the light ray leaving a medium in contrast to the entering or incident ray.