after a very long time after the switch has been closed, what is the voltage drop vc across the capacitor in terms of vb?

Answer:

spread and go up

Explanation:

like water when hot gas when cold ice when warm liquid

Answer:

b because to react with something makes it a chemical reaction

Explanation:

Answer:

Answering the following questions will help you to focus on the outcomes of these experiments:

1.How does the length to height ratio (the IMA) of trial 1 compare to trial 2?

= Trial 1 is 5.09, and Trial 2 is 3.25. Trial 1 is higher because the height of the trial is less than trial 2.

2.Why is the actual mechanical advantage less than the ideal mechanical advantage in each of the trials?

= It is because the machine's ideal mechanical advantage reflects the increase or decrease in force that would have occurred without friction. It is always greater than the actual mechanical advantage because all machines have to overcome friction.

3.If a machine was 100% efficient, how would the AMA compare to the IMA?

= In any real machine, some of the efforts are used to overcome friction. Thus, the resistance force ratio to the effort (AMA) is less than the (IMA).

A frictionless machine would have an efficiency of 100%.

A Girl Scout is taking a 10.00-km hike to earn a merit badge. While on the hike, she sees a cliff some distance away. She wishes to estimate the time required to walk to the cliff.

She knows that the speed of sound is approximately 343 meters per second. She yells and finds that the echo returns after approximately 2.00 seconds. If she can hike 1.00 km in 10 minutes.

Given The speed of sound = 343 m/s, Echo time = 2 sec, Speed of sound = Distance / Time

By using the above formula, the distance of the cliff from the Girl Scout can be found as,

Distance = Speed × Time

Distance = 343 × 2

Distance = 686 meters

As she can hike 1.00 km in 10 minutes, the time required to hike 10.00 km can be found as,

Time required = 10 km × (10 min/1 km) = 100 min.

Therefore, the time required for the Girl Scout to reach the cliff is 100 min.

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The function \($\psi = 8e^{5x}$\)is an eigenfunction of the operator \(\frac{d}{dx}$ because $\frac{d}{dx} 8e^{5x} = 8\frac{d}{dx}e^{5x} = 40e^{5x}$\). The eigenvalue associated with this eigenfunction is 40.

The momentum operator corresponding to \(px$ is $\hat{px} = -i\hbar\frac{d}{dx}$\) and this is a Hermitian operator. This can be shown by taking the Hermitian conjugate of both sides: \((\hat{p_x})^\dagger = (-i\hbar\frac{d}{dx})^\dagger = i\hbar\frac{d}{dx} = \hat{p_x}$.\) Therefore, \($\hat{p_x}$\) is a Hermitian operator.

The eigenvalues will be used to determine the stability of the equilibrium point of the system and the eigenvectors will be used to determine the transformation of the system. for any scalar

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(A) The solution X is unsaturated

(B) The solution Y should contain 2.9 g solute in 1000 mL solution.

(C) The percentage by mass of the solute is 40%

(A) The type of solution X is determined as follows;

The maximum amount of solute that can dissolve in solution  X  =  29 g/Liter

The amount of solute in solution X = 2.9 g/Liter

This solution is unsaturated because the amount of solute present is less than the maximum the solution can take.

(B) The amount solute and volume in the solution Y is calculated as follows;

The solubility = 2.9 g/Liter

\(solubility = \frac{2.9 \ g}{L} \times \frac{L}{ mL \times 1000} = \frac{2.9 \ g}{1000mL}\)

Thus, the solution should contain 2.9 g solute in 1000 mL solution.

(C) The percentage by mass of the solute is calculated as;

\(mass \ \% = \frac{20 \ g}{50 \ g} \times 100 \% = 40 \%\)

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According to the information we can infer that the country that was formed from Yugoslavia was Croatia (option C).

According to the information from different sources we can infer that the country that was formed from Yugoslavia was Croatia. This country is located in southeastern Europe that gained independence in 1991 after the breakup of Yugoslavia.

Additionally, it was one of the six republics that made up Yugoslavia, along with Bosnia and Herzegovina, Montenegro, North Macedonia, Serbia, and Slovenia. Following a period of political and social unrest, Croatia declared its independence from Yugoslavia, which ultimately led to the Croatian War of Independence.

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The final speed of the 5 boxcars immediately after the collision is 2 m/s.

To find the final speed of the 5 boxcars immediately after the collision, we can use the principle of conservation of momentum. The initial momentum of the moving boxcar should equal the final momentum of all 5 boxcars combined.
1. Calculate the initial momentum of the moving boxcar:
Initial momentum = (mass of moving boxcar) × (initial speed)
Let's denote the mass of one boxcar as m. So, the initial momentum is 10m (since the moving boxcar has a speed of 10 m/s).
2. Calculate the final momentum of all 5 boxcars:
Final momentum = (total mass of 5 boxcars) × (final speed)
The total mass of 5 boxcars is 5m, and we want to find the final speed, which we'll call V.
3. Apply conservation of momentum:
Initial momentum = Final momentum
10m = 5m × V
4. Solve for the final speed, V:
Divide both sides by 5m:
V = 10m / 5m
V = 2 m/s
The final speed of the 5 boxcars immediately after the collision is 2 m/s.

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The linear speed of the electron is 7.03 x 10¹³ m/s and the angular speed of the electron is 5.6 x 10¹³ rev/s.

The speed of the electron is calculated as follows;

F = ma = mv²/r  ---(1)

F = qvB  ----- (2)

mv²/r = qvB

mv/r = qB

mv = qBr

v = qBr/m

where;

v = (1.6 x 10⁻¹⁹ x 2 x 10³ x 0.2) / (9.1 x 10⁻³¹)

v = 7.03 x 10¹³ m/s

ω = v/r

ω = (7.03 x 10¹³ m/s) / (0.2 m) = 3.51 x 10¹⁴ rad/s

ω = 3.51 x 10¹⁴ rad/s  x 1 rev/2π rad

ω = 5.6 x 10¹³ rev/s

Thus, the linear speed of the electron is 7.03 x 10¹³ m/s and the angular speed of the electron is 5.6 x 10¹³ rev/s.

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Answer:

F= 1800N

Explanation:

the equation for force is F= ma

so plug in the numbers: F= (120)(15)

solve this to get F= 1800N

tip: don't forget to add the units when writing your answer :)

The answer is option c: 7.6 mb must be subtracted from the station pressure to correctly determine the sea level pressure value in mb.

To determine the sea level pressure value, we need to adjust the observed station pressure for the difference in elevation between the station and sea level.

In this case, the regional airport is located 76 meters below mean sea level. The standard atmosphere assumes a decrease of approximately 1 mb for every 10 meters of elevation gain. Therefore, we need to subtract the equivalent pressure decrease caused by the elevation difference.

Given that the observed station pressure is 1015 mb, we can calculate the adjustment by dividing the elevation difference (76 meters) by 10 and multiplying it by the pressure decrease per 10 meters (1 mb). So, (76 / 10) * 1 = 7.6 mb. Therefore, we must subtract 7.6 mb from the observed station pressure of 1015 mb to correctly determine the sea level pressure value.

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The energy of photon with the wavelength of 470 nm is 4.23 × 10 ⁻¹⁹ J. The total energy of all photons is given 2.50 J. Then the number of photons reaching our eyes is 5.93 × 10¹⁸.

According to De Broglie's dual nature of matter, light behaves as both wave and particle. If the light has the particle nature, the light particles are called photons.

The energy of one photon is E = hc/λ

Where h is the Planck's constant and c be the speed of light.

given that  λ = 470 nm

h = 6.63 × 10⁻³⁴ J. s

c = 3 × 10⁸ m/s.

Then E =  ( 6.63 × 10⁻³⁴ J. s × 3 × 10⁸ m/s ) /  (470 × 10⁻⁹ m) = 4.23 × 10 ⁻¹⁹ J.

This is the energy of one photon. If the total energy is 2.50 J. The number of photons = 2.50 J / 4.23 × 10 ⁻¹⁹ J = 5.93 × 10¹⁸.

Therefore, the number of photons reaching our eyes is 5.93 × 10¹⁸.

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Electric potential is the amount of electric potential energy per unit charge at a particular point in an electric field.

It is a scalar quantity measured in volts (V). To find the value of charge (q) given the electric potential, we can use the equation:

Electric Potential = Electric Potential Energy / Charge

Rearranging the equation, we have:

Electric Potential Energy = Electric Potential * Charge

The electric potential energy is the work done to bring a charge from infinity to a specific point in the electric field. By knowing the electric potential and rearranging the equation, we can determine the value of the charge (q).

For example, if the electric potential is 10 volts and the electric potential energy is 50 joules, we can substitute these values into the equation:

50 joules = 10 volts * Charge

By rearranging the equation and solving for Charge, we find that the value of the charge (q) is 5 coulombs.

It is important to note that the electric potential is a property of the electric field, while the charge is a property of the particle experiencing the electric field.

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Answer:

I would say C

Explanation:

seasons are cause by the tilt in the Earths axis of rotation as it revolves around the sun.

Answer:

Explanation:

The distance covered by an object given it's speed and time taken can be found by using the formula

distance = speed × time

From the question we have

distance = 7.5 × 98 = 735 m

We have the final answer as

Hope this helps you

The alpha particles are capable of alternating the mass and atomic numbers in the atoms which is responsible for transmutation. This occurs in nuclear reacting.

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Answer:

Explanation:

False.

There are also fields -- gravitational, electromagnetic...

The thickness of the mica sheet is approximately 0.012 mm, B.

Let the thickness of the mica sheet be t, and let the distance between the slits and the screen be D. The shift in the position of the center of the fringe pattern can be given by:

Δy = λD/d

where λ = wavelength of the light, and d = distance between the two slits.

In the presence of the mica sheet, the light passing through the mica has to travel an extra distance of 2t through the mica, which causes a phase shift of:

δ = (2π/λ) × (n - 1) × t

where n = refractive index of the mica.

For the dark fringes, the phase difference between the two beams is an odd multiple of π, i.e.,

Δφ = δ + πk = (2k + 1)π

where k = an integer.

The shift in the position of the center of the fringe pattern corresponds to 30 dark bands:

Δy = 30 × λD/d

Equating this expression to the optical path length difference:

δ = (2π/λ) × (n - 1) × t = 30 × λD/d

Substituting the given values:

(2π/480 nm) × (1.60 - 1) × t = 30 × 480 nm × D/d

Simplifying:

t = (30 × 480 nm × D/d) / (2π × 0.60)

t = 0.012 mm

Therefore, the thickness of the mica sheet is approximately 0.012 mm, which is (b).

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Answer:

He is being careless.

Explanation:

he is trying to "get rid" of one problem so he can tackle another. This is food though, and you have customers to serve. You also have to be careful about food poisoning.

Answer: someone took down my answer I don’t know why when I took this test and got it right but the answer is C like the other person said.

Explanation:

The microwave radiation referred to in this context is radiation that was released as matter formed in the early universe. Therefore option A is correct.

Microwave radiation, also known as cosmic microwave background radiation (CMB), is a faint radiation that permeates throughout the universe.

It is considered to be the remnants of the thermal radiation released shortly after the Big Bang, during a phase called recombination. At this time, the universe transitioned from a hot, dense plasma to a state where neutral atoms could form, allowing photons to travel freely.

The cosmic microwave background radiation is isotropic, meaning it is uniformly distributed in all directions, and it has a characteristic temperature of approximately 2.7 Kelvin (-270.45 degrees Celsius).

It was first detected in 1965 by Arno Penzias and Robert Wilson, who were awarded the Nobel Prize in Physics for their discovery.

The presence of cosmic microwave background radiation provides strong evidence for the Big Bang theory and helps to support the understanding of the early universe's formation and evolution.

It serves as an important tool for studying cosmology and provides insights into the structure, age, and composition of the universe.

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Answer:

Check attachment for your answer

Good luck

The change in the electrical energy of a proton would be 2.40 x 10^-16 J.

The change in electrical potential energy of a charged particle in a uniform electric field is given by the equation:

ΔPE = qEd

where q is the charge of the particle, E is the magnitude of the electric field, and d is the distance moved by the particle in the direction of the electric field.

In this case, the proton has a charge of q = 1.60 x 10^-19 C and moves a distance of d = 5 m - 2 m = 3 m in the direction of the electric field. The magnitude of the electric field is E = 5.0 x 10^2 N/C.

Substituting these values into the equation, we get:

ΔPE = (1.60 x 10^-19 C)(5.0 x 10^2 N/C)(3 m)

ΔPE = 2.40 x 10^-16 J

Therefore, the change in electrical energy of the proton as it moves from x = 5 m to x = 2 m is 2.40 x 10^-16 J.

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Answer:

To answer your question:

a) The formula to calculate the number of wavelengths within a laser pulse is:

number of wavelengths = pulse duration / wavelength

Plugging in the values given in the question, we get:

number of wavelengths = 38 ps / 1062 nm

Converting picoseconds to seconds and nanometers to meters, we get:

number of wavelengths = 38 x 10^-12 s / 1062 x 10^-9 m

number of wavelengths = 0.0358

Therefore, there are approximately 0.0358 wavelengths within the laser pulse.

b) To fit only one wavelength, the pulse duration would need to be equal to the wavelength. The formula to calculate the pulse duration is:

pulse duration = wavelength

Plugging in the value given in the question, we get:

pulse duration = 1062 nm

Converting nanometers to picoseconds using the speed of light ©, we get:

pulse duration = wavelength / c

pulse duration = 1062 x 10^-9 m / 3 x 10^8 m/s

pulse duration = 3.54 x 10^-12 s

Therefore, the pulse would need to be approximately 3.54 ps long to fit only one wavelength.

I hope this helps

Answer:

7.2 seconds

Explanation:

50=5

72=t, criss-cross, t=72 (5)/50

A cylindrical rod has equal and opposite forces applied perpendicular to its circular ends. The forces are directed toward the rod, compressing the rod. What type of stress is this rod subject to?

the rod is subjected to tensile stress. In such cases, the volume of the rod remains constant, however there's an increment in the length.

Tensile stress makes material elongate along the axis of the applied load.

In this case, the rod elongates along its axis yet the volume remains constant.

When you want to find the maximum speed with which a 1200- kg car can round a turn of radius 85.0 m on a flat road if the coefficient of static friction between tires and road is 0.60, you can use the following formula: v = sqrt(μrg).

Where:v represents the maximum speed with which the car can round a turn r is the radius of the turn g is the acceleration due to gravity, andμ is the coefficient of frictionIn this case, the mass of the car is 1200 kg and the radius of the turn is 85.0 m, while the coefficient of friction is 0.60.

To find the acceleration due to gravity, we can use the value 9.81 m/s². Therefore:v = sqrt(0.60 * 9.81 m/s² * 85.0 m) = 23.7 m/sTherefore, the maximum speed with which the 1200-kg car can round a turn of radius 85.0 m on a flat road if the coefficient of static friction between tires and road is 0.60 is approximately 23.7 m/s.

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Answer: A. 2.7 x 10^2 joules

Explanation: I’m sorry for the guy above me!