In complete sentences please

Answer:

When a capacitor is fully charged, no current flows in the circuit. This is because the potential difference across the capacitor is equal to the voltage source. (i.e), the charging current drops to zero, such that capacitor voltage = source voltage.

Explanation:

Hope this helps

This question deals with the physics of resonance and sound. The possible frequency of the pano key is 258hz.

The beat of a frequency is the difference (an absolute value) in the frequencies produced by the two waves.

Beat per second equals |f1 - f2| Where

ft = Frequency of the Tunning fork and

fp= Frequency of the Piano Key

Hence

3 =  261 - fp

Solving for fp,

fp = 261-3

= 258hz

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The best physical property to focus on for the first step in separating the mixture would be magnetism, therefore the correct answer would be option C.

An area where the magnetic force is being applied might be described as a magnetic field. This area could be found around a magnet, magnetic substance, or electric charge.

The magnet's N-pole and S-pole have the strongest magnetic fields for a basic bar magnet. A magnet's north pole serves as the source of the magnetic field, which ends at the south pole.

As given in the problem Katie's teacher has given her a sample that contains a mixture of salt, sand, and iron fillings. She is instructed to separate the mixture into three individual components.

The first step in separating the mixture would be to separate iron fillings with the help of the property of magnetism as iron fillings are the magnetic material. therefore the correct answer would be option C.

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To find the magnitude of x in the given system of equations, (1- j9)x + (2 + j10)y = 4 + j3 and (2 - j2)x + (7 - j6)y = -5 + j17,

Step 1: Represent the given equations in matrix form.
A = [ [1 - 9j, 2 + 10j], [2 - 2j, 7 - 6j] ]
B = [ [4 + 3j], [-5 + 17j] ]

Step 2: Solve for the inverse of matrix A, denoted as A_ inv.
A_ inv = 1/det(A) * ad jugate(A), where det(A) is the determinant of matrix A and ad jugate(A) is the ad jugate of matrix A.

Step 3: Compute the determinant of matrix A.
det(A) = (1 - 9j)(7 - 6j) - (2 + 10j)(2 - 2j) = 23 - 56j

Step 4: Compute the ad jugate of matrix A.
ad jugate(A) = [ [7 - 6j, -2 - 10j], [-2 + 2j, 1 - 9j] ]

Step 5: Compute the inverse of matrix A.
A_ inv = 1/(23 - 56j) * [ [7 - 6j, -2 - 10j], [-2 + 2j, 1 - 9j] ]

Step 6: Solve for the matrix X by multiplying A_ inv with B.
X = A_ inv * B = [ [x], [y] ]

Step 7: Find the magnitude of x.
magnitude(x) = |x|

After performing the calculations, the magnitude of x is found to be approximately 0.4224.

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Answer:

The ratio of the potential difference across a metallic conductor to the current in the conductor is known as.

B. Resistance.

Explanation:

According to ohms law   " the current  passing through a conductor is directly proportional to the potential difference between the ends provided the temperature of the wire remains constant".

What is resistance ?

Resistance is a measure of the opposition to current flow in an electrical circuit

what is a resistor ?

a resistor is a n electric conductor which forms resistance to free flow of electric current, the resistance is measured in Ω

The ratio of the potential difference across the conductor to the current is called resistance

It is defined as the ratio of the potential difference across the conductor to the current. The resistance is measured in Ω.

\(R = \dfrac VI\)

Where,

\(R\) - resistance

\(V\)- voltage (Potential difference)

\(I\) - current

Therefore, the ratio of the potential difference across the conductor to the current is called resistance.

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Given data

*The carbon-14 has a half-life is t = 5730 years

*The amount of quantity contained is n = 70 mg

*The given time is T = 17190 years

The expression for the radioactivity decay equation is given as

Substitute the values in the above expression as

c) so they could benefit from using the most accurate measurement system

Explanation:

yuh

We have that what  missing from this graph is

Axis labels.

Correct option is B

Generally

It is important to note that a graph is incomplete with out labeling its  axis to show clarification

The Graph above  has

a title as"Number of sunspots each year"

and obvious trend lines

Therefore

Axis labels.

Correct option is B

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Answer:

It's axis labels

Explanation:

I took the test :D

The rms current in the transmission lines is I = 487.18 A.

The root-imply-rectangular (rms) voltage of a sinusoidal supply of electromotive force  is used to represent the source. it is the rectangular root of the time average of the voltage squared.

Alternating-present day circuits. the root-imply-square (rms) voltage of a sinusoidal source of electromotive force is used to symbolize the supply. it's far the square root of the time average of the voltage squared.

Electric power is  by using present day or the waft of electric fee and voltage or the capacity of rate to deliver electricity. A given cost of power can be produced by using any combination of contemporary and voltage values

power = 38 M watt

rms voltage = 78 K v

power = IV

I = power/V

I = (38 * 1000000)/78*1000

I = 487.18 A.

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These logarithmic plots provide a better visualization of the exponential decay and growth of the voltage, making it easier to compare the rates of change during charging and discharging.

To plot the logarithm of the resistor voltage during charging and discharging versus time, we need to use the formula for the voltage across a resistor in an RC circuit, which is given by V = V₀e^(-t/RC), where V₀ is the initial voltage, t is the time, R is the resistance, and C is the capacitance.

Taking the logarithm of both sides, we get:

ln(V) = ln(V₀) - t/RC

This equation represents a straight line with slope -1/RC and y-intercept ln(V₀).

For charging, the resistor voltage starts at 0 and increases exponentially towards the maximum value of V₀. The logarithm of the resistor voltage also increases with time, but at a decreasing rate. The slope of the logarithmic plot during charging is negative, and its magnitude decreases as the voltage approaches its maximum value.

For discharging, the resistor voltage starts at V₀ and decreases exponentially towards 0. The logarithm of the resistor voltage also decreases with time, but at an increasing rate. The slope of the logarithmic plot during discharging is positive, and its magnitude increases as the voltage approaches 0.

These graphs give us additional information about the behaviour of the resistor voltage during charging and discharging. The logarithmic plots provide a better visualization of the exponential decay and growth of the voltage, and allow us to more easily compare the rates of change during charging and discharging. The slope of the logarithmic plot also gives us a numerical value for the rate of change, which can be used to calculate the time constant RC of the circuit.

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The measure of the angle EFD = 34°. That is option A.

The radii of the given circle are CE and CD.

The measure of the given angle of the arc is = 68°

But the central angle of an intercepted arc measure the double of the inscribed angle by the same arc.

Therefore, the measure of angle of an intercepted arc is 68/2 = 34°

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Answer:

34

Explanation:

edge 2023

To provide an output of 40 W, approximately 134 solar cell modules would be necessary.

To determine the size of the solar cell array necessary to provide an output of 40 W, we need to calculate the total power generated by a single solar cell module and then divide 40 W by that power.

In this case:

Voltage (V) = 3 V

Current (I) = 0.1 A

Dimensions: Length (L) = 5.0 cm and Width (W) = 8.0 cm

First, let's calculate the power generated by a single solar cell module using the formula:

Power (P) = Voltage (V) * Current (I)

P = 3 V * 0.1 A

P = 0.3 W

So, a single solar cell module generates 0.3 W of power.

Now, we can determine the number of modules required to provide 40 W of power by dividing the desired output power by the power of a single module:

Number of modules = Desired power / Power per module

Number of modules = 40 W / 0.3 W

Number of modules ≈ 133.33

Since we cannot have a fraction of a module, we would need to round up to the nearest whole number.

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We have that the amount of the charge q is

\(q=1.8*10^{-7}\)

From the Question we are told that

Force \(F=7.89 x*10^{-7}\)

Velocity \(V=2090m/s\)

Angle \(\theta=29.4\)

Magnetic field \(B=4.23 * 10^{-3} T\)

Generally, the equation for Force F is mathematically given by

\(F=qVBsin\theta\\\\q=\frac{F}{VBsin\theta}\)

\(q=\frac{7.89 x*10^{-7}}{4.23 * 10^{-3} T*sin29.4*2090m/s}\)

\(q=1.8*10^{-7}\)

In conclusion

The amount of the charge q is

\(q=1.8*10^{-7}\)

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From the question, the given charge moving within the magnetic field would have a value of 1.82 x \(10^{-7}\) C.

A charge is either a positively or negatively charged particle. When a charge is moving through a magnetic field, it would experience a force which depends on the amount of the charge, its speed, the magnetic field strength and angle. The force on a charge in a magnetic field can be determined by:

F = qvBSin θ

where: q is the charge, v is its velocity/ speed in the field and θ is the angle of deflection of the charge.

Given that: F = 7.89 x \(10^{-7}\) N, v = 2090 m/s, B = 4.23 x \(10^{-3}\) T and θ = 29.4°.

Thus, the amount of the charge can be determined by;

q = \(\frac{F}{vBsin O}\)

  = \(\frac{7.89*10^{-7} }{2090*4.23*10^{-3}* Sin 29.4 }\)

  = \(\frac{7.89*10^{-7} }{4.340}\)

q = 1.818 x \(10^{-7}\)

q = 1.82 x \(10^{-7}\) C

Therefore, the amount of the charge that moved within the magnetic field is 1.82 x \(10^{-7}\) C.

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The perpendicular component of a displacement factor with a magnitude of 20 m is 20 m as well. When an object moves from its initial position to a final position, the displacement is the straight-line distance between the two positions and the direction of the displacement is from the initial position to the final position.

A perpendicular component is created when the displacement vector is resolved into two components. When a displacement vector is divided into two perpendicular components, the magnitude of each component is found using the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

This theorem is represented mathematically as: a² + b² = c².Where c is the length of the hypotenuse, and a and b are the lengths of the other two sides of the triangle. In this case, the hypotenuse represents the displacement vector, and the two other sides represent the components of the displacement vector that are perpendicular to each other. Therefore, the perpendicular component of a displacement factor with a magnitude of 20 m is 20 m as well.

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The thickness of the book is 10.40 mm thick.

The reason we learn math is to apply this to real life. We learn addition, subtraction, multiplication, division, and all other mathematical operation with the aim that we can use that in real-life problems. Given problem is one of the examples where we will use math in a real-life situation.

200 pages means that there are 100 papers.

1 paper = 0.1mm

So, 100 papers = 0.1* 100 = 10mm

There are two covers of 0.2mm each, therefore

Total thickness = 10 + 2*0.2

= 10 + 0.4

= 10.4 mm

Hence, thickness of the book is 10.40 mm thick.

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The thickness of the book is 10.40 mm thick.

Learning math is done so that you can use it in real-world situations. It is our intention to be able to use addition, subtraction, multiplication, division, and all other mathematical operations to solve problems that come up in daily life. The given problem is one of the situations where math will be used in a practical setting.

200 pages means that there are 100 papers.

1 paper = 0.1mm

So, 100 papers = 0.1* 100 = 10mm

There are two covers of 0.2mm each, therefore

Total thickness = 10 + 2*0.2

= 10 + 0.4

= 10.4 mm

Hence, thickness of the book is 10.40 mm thick.

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a) Mutual inductance = 0.108 H; Coupling coefficient = 0.482. b) - 4.95 V.


a) Mutual inductance, M between coil A and coil B can be given as:

M = k√(L_AL_B) here, k is the coupling coefficient, L_A and L_B are the inductances of the coil A and coil B respectively. Since 54% of flux produced by coil A links coil B,

So, K = 0.54

L_A = N_A Φ/I_AL_A

= 8120 × 0.02/6

= 27.07 mH

L_B = N_B Φ/I_BL_B

= 11842 × 0.078/6

= 154.63 mH

M = k√(LALB) = 0.482 × √(27.07 × 0.15463) = 0.108 H

b) The emf induced in coil B can be given as:-

ε = M (dI_B/dt)/L_B

ε = 0.108 × (-6/0.015) / 0.15463 = -4.95 V

Thus, the emf induced in coil B when the current is reversed in 0.015 seconds is -4.95 V.

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Answer:

High pressure

The amount of space a gas's molecules take up compared to the total space in the container—the molecules' relative volume—gets bigger.

Explanation:

Answer:

I would say the net force acting on the car is in the opposite direction of the car's motion  is correct

Explanation:

Constant speed => Zero acceleration

Since Fnet = ma, when a = 0, Fnet = 0.

The best answer here is:

"The net force acing on the car from all directions is zero."

The period of the blinker of the other car is also 0.80 seconds.

A period is the time it takes for a repeating pattern to complete one cycle. In this case, the student observed that the blinker of their car was in sync with the blinker of the car in front of them. This means that both blinkers have the same period, which was given as 0.80 seconds. Later, the student observed that the blinker of the other car was getting ahead, but 17 seconds later they were exactly in sync again. This suggests that the other blinker had the same period as the student's blinker, which was 0.80 seconds.

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Answer:

Taking forces along the plane

F cos θ - M g sin θ -100 = M a       net of forces along the plane

F = (M a + M g * .5 + 100) / .866     solving for F

F = (80 * 1.5 + 80 * 9.8 * .5 + 100) / .866 = 707 N

F = 707 N acting along the plane

Fn = F sin θ + M g cos θ       forces acting perpendicular to plane

Fn = 707 * 1/2 + 80 * 9.8 * .866 = 1030 Newtons   forces normal to plane

(this would give a coefficient of friction of 100 / 1030 = .097 = Fn)

The current flowing through the television is given asI = P/V= 100/120= 0.83 .

It takes 1.927 × 10^-12 seconds for 10 million electrons to pass through the TV.

(a) Calculation of current flowing through the television. The current flowing through the television is calculated by using Ohm's Law, where the voltage across the television is 120 V and the power consumed is 100 W. The current flowing through the television is given asI = P/V= 100/120= 0.83 A.

(b) Calculation of time taken for 10 million electrons to pass through the TV. To calculate the time taken for 10 million electrons to pass through the TV, we need to calculate the number of electrons flowing per unit time. We know that the electric charge on an electron is -1.6 × 10^-19 C.

Therefore, the number of electrons flowing in 1 second = Current (I) / Charge of an electron. Number of electrons flowing in 1 second = 0.83 / 1.6 × 10^-19 = 5.1875 × 10^18So, time taken for 10 million electrons to pass through the TV is given by: Number of seconds = (10 × 10^6) / (5.1875 × 10^18)= 1.927 × 10^-12 seconds.

Therefore, it takes 1.927 × 10^-12 seconds for 10 million electrons to pass through the TV.

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The net electric field at point (0, 0) is the vector sum of the electric fields due to particles b and c. Since the electric field due to particle a is infinite, we cannot include it in the net electric field calculation.
Net electric field = Eb + Ec

To find the net electric field at point (0, 0), we need to calculate the individual electric fields due to each charged particle and then add them together.

Step 1: Calculate the electric field due to particle a:
The formula to calculate the electric field at a point due to a charged particle is given by:
E = (k * q) / r^2
where E is the electric field, k is the electrostatic constant (9 * 10^9 N*m^2/C^2), q is the charge of the particle, and r is the distance between the particle and the point.

Given that the charge of particle a is 3.10 * 10^(-4) C and the distance between particle a and point (0, 0) is 0, we can calculate the electric field due to particle a.

Ea = (9 * 10^9 * 3.10 * 10^(-4)) / (0^2)
Since the distance is zero, the electric field due to particle a will be infinite.

Step 2: Calculate the electric field due to particle b:
The distance between particle b and point (0, 0) is 4.50 m. Using the formula mentioned above, we can calculate the electric field due to particle b.

Eb = (9 * 10^9 * -6.20 * 10^(-4)) / (4.50^2)

Step 3: Calculate the electric field due to particle c:
The distance between particle c and point (0, 0) is 3.06 m. Using the formula mentioned above, we can calculate the electric field due to particle c.

Ec = (9 * 10^9 * 1.50 * 10^(-4)) / (3.06^2)

Step 4: Calculate the net electric field:
The net electric field at point (0, 0) is the vector sum of the electric fields due to particles b and c. Since the electric field due to particle a is infinite, we cannot include it in the net electric field calculation.

Net electric field = Eb + Ec

Now you can substitute the values of Eb and Ec into the equation and calculate the net electric field at point (0, 0) using the given charges and distances.

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The mass of the beach ball is 0.33 kg

From the question,

We are to determine the mass of the beach ball.

Using the formula

ρ = mv

Where ρ is the momentum

m is the mass

and v is the velocity

From the given information,

ρ = 3 kg m/sec

v = 9 m/sec

Putting the parameters into the formula, we get

3 = m × 9

∴ m = 3 ÷ 9

m = 0.33 kg

Hence, the mass of the beach ball is 0.33 kg

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Answer: A

Explanation:

To find the specific heat at constant volume of a gas, you need to measure the change in internal energy of the gas when it is heated at constant volume.

The specific heat at constant volume can then be calculated using the equation:

C_v = ΔU / mΔT

where ,

ΔU is the change in internal energy,

m is the mass of the gas, and

ΔT is the change in temperature.

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Answer:

A

Explanation:

It depends on the scale of the volcanic eruption. A smaller eruption may only affect the nearby area, but a large one can affect the whole world. For example, the Krakatoa eruption of 1883 created an ash cloud which lowered global temperatures and affected the climate for a year afterwards.

An explosive eruption by a single volcano can affect only the lifeforms living on the volcano. The correct option is B.

A volcano is an opening in the Earth's surface through which molten rock, ash, and gas can escape. Volcanoes are formed by the movement of tectonic plates, which create weak spots or vents in the Earth's crust where magma can rise to the surface.

Volcanoes can form in different ways, but most are formed at plate boundaries, where one tectonic plate is moving under another (subduction zone), or where two plates are moving away from each other (divergent boundary). When magma rises to the surface, it can form a volcanic cone or mountain over time.

There are three main types of volcanoes, based on their shape and the type of eruptions they produce:

(i)Shield volcanoes - broad, gentle slopes formed by lava flows that spread out over a wide area.

(ii)Stratovolcanoes (also called composite volcanoes) - tall, steep-sided cones formed by alternating layers of lava, ash, and other volcanic debris.

(iii)Calderas - large, basin-shaped depressions that form when a volcano collapses or erupts so forcefully that it empties its magma chamber.

Volcanoes can be active, dormant, or extinct. Active volcanoes are those that have erupted recently or are expected to erupt soon, while dormant volcanoes have not erupted in a long time but could still erupt in the future. Extinct volcanoes are those that have not erupted in thousands of years and are unlikely to erupt again.

Here in the question,

An explosive eruption by a single volcano can have a significant impact on the surrounding environment and local communities, but its effects are generally limited to the immediate vicinity of the volcano. The eruption may release ash, gases, and lava flows that can cause damage to nearby ecosystems and affect the health of humans and animals living in the area. However, the effects are unlikely to extend beyond the local region, let alone affect lifeforms throughout the world.

Therefore,  B. only the lifeforms living on the volcano, is the correct option.

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Answer:

A. 30 cp. B. 60 cp. C. 200 cp. *D. 400 cp. 0

Answer:

It is 200 cp.

Explanation:

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The wavelength of the sound wave, given that wave has a frequency of 35 Hz and travelling at 1500 m/s is 42.86 m

First, we shall list out the given parameters from the question. This is given below:

The wavelength of the sound wave can be obtained as illustrated below:

Velocity (v) = wavelength (λ) × frequency (f)

1500 = wavelength × 35

Divide both sides by 35

Wavelength = 1500 / 35

Wavelength = 42.86 m

Thus, from the above calculation, we can conclude that the wavelength of the sound wave is 42.86 m

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The Law of Inertia is a part of Newton's First Law. According to this, an item at rest or in motion will remain such until it is affected by an unbalanced force (s). Law of Inertia governs roller coasters.

Product of force mass equals acceleration, according to Newton's Second Law (f x m = a). As a result, the roller coaster alters its velocity, accelerates, or travels up the hill whenever the chain pulley system is pulling it. The acceleration increases as the chain pulley pulls more forcefully.

A rollercoaster ride is a device that propels a train of vehicles over a twisting track using gravity and inertia. When the coaster rolls up, down, and around its track, the body experiences distinct sensations as a result of gravity, inertia, g-forces, and centripetal acceleration.

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