a sound wave takes 6 seconds to complete one cycle. what is the frequency of this wave

The star whose absolute magnitude is 1.0 is 0.0128 pc away from the earth.

Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores.

Given is a certain star has an absolute magnitude of 1.0 and an apparent magnitude of 5.4.

We can write the relation absolute magnitude [M] and apparent magnitude [m] as follows -

M = m + 5(log₁₀p + 1)

Assume that the star is [x] light years away from earth. Then, we can write the above equation as -

M = m + 5[log₁₀ (x/3.2616)+ 1]

1 = 5.4 + 5[log₁₀x - log₁₀ 3.2616 + 1]

1 - 5.4 = 5[log₁₀x - 0.5134 + 1]

- 4.4 = 5[log₁₀x + 0.4866]

- 4.4 = 5log₁₀x + 2.433

- 4.4 - 2.433 = 5log₁₀x

- 1.37 = log₁₀x

x = 0.042 light years

Now, in 1 pc there are 3.2616 light years.

In 1 light year there will be (1/3.2616) pc

So, in 0.042 light years there will be (1/3.2616 x 0.042) = 0.0128 pc

Therefore, the star whose absolute magnitude is 1.0 is 0.0128 pc away from the earth.

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Answer:

gpe gained = 60J

Explanation:

gravitational potential energy  =  mass * gravity * height

gpe =  2 kg * 10 N * 3 m

gpe = 60J

Answer:

722.89

Explanation:

mass=24000kg

volume=33•2

density=?

now,

density=mass/volume

=24000/33•2

=722•89

density=722•89 kg/m^3

Answer:

By having specialized instruments onboard NASA spacecrat, they do this to detect how they behave

Explanation:

I really hope this is right have a stellar day.

The kinetic energy of an electron transformed into potential energy when it interacts with other electrons without changing its speed.

The average kinetic energy (KE) is defined as the one-half of the mass of each gas molecule times multiplied by the square of RMS velocity.

\(\rm {KE = \frac{1}{2} mv^2}\)

where,

KE is the kinetic energy

m is the mass of each molecule

(V)rms is the RMS velocity

According to the law of conservation of energy, kinetic energy gets converted into potential energy. In that case, speed does not play a major role.

When an electron collides with the other electron Its energy gets transferred to the other electrons. The moving electrons get stuck and come to rest.

Hence the kinetic energy of an electron transformed into potential energy when it interacts with other electrons without changing its speed.

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To calculate the net force on particle q2, we need to calculate the individual forces exerted by q1 and q3 on q2, considering their charges and separation distances.

Using Coulomb's Law, the force between two charged particles can be calculated as:

\(F = (k * |q1 * q2|) / r^2\)

where F is the force, k is Coulomb's constant (8.99 x 10^9 N m²/C²), q1 and q2 are the charges of the particles, and r is the separation distance between them.

For q1 and q2:

F1 = (8.99 x 10^9 N m²/C²) * (|-66.3 x 10^-6 C * 108 x 10^-6 C|) / (0.550 m)²

For q2 and q3:

F2 = (8.99 x 10^9 N m²/C²) * (|108 x 10^-6 C * -43.2 x 10^-6 C|) / (0.550 m)²

The net force on q2 is the vector sum of F1 and F2:

Net Force = F1 + F2

By calculating these values and performing the addition, we can determine the net force acting on particle q2.

Therefore, To calculate the net force on particle q2, we need to calculate the individual forces exerted by q1 and q3 on q2, considering their charges and separation distances.

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Answer:

your answer is true

Explanation:

good luck :)

The time interval between the man clapping and hearing his echo is approximately 1.75 seconds.

An echo is a repetition or reflection of a sound or signal. It can be caused by sound waves bouncing off a surface, signal interference, or the repetition of a message in communication.

The speed of sound in air at room temperature is approximately 343 meters per second. When a person claps, the sound waves propagate outward in all directions and reach the school building, where they bounce off and return to the person as an echo. The time it takes for the sound to travel the distance to the building and back to the person is the time interval between the clap and the echo.

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

time = distance / speed

where distance is the total distance traveled by the sound (twice the distance from the person to the school building), and speed is the speed of sound in air.

distance = 2 x 300m = 600m

speed = 343 m/s

time = 600m / 343 m/s = 1.75 seconds (rounded to two decimal places)

Therefore, the time interval between the man clapping and hearing his echo is approximately 1.75 seconds.

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A. The electric field is null at the point C; located in the middle of the

segment AB.

Electric field is the region of space where the influence of electric force is felt.

E = kq/r²

where;

E(+6μC) = (9 x 10⁹ x 6 x 10⁻⁶) / (0.5²)

E(+6μC) = +216,000

E(-6μC) = (9 x 10⁹ x 6 x 10⁻⁶) / (0.5²)

E(-6μC) = -216,000

E(net) = E(+6μC) + E(-6μC)

E(net) = 216,000 - 216,000 = 0

Thus, the electric field is null at the point C; located in the middle of the

segment AB.

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The kinetic energy of the book after it is slids a distance of 2 meters will be 10 Joules.

The work-energy theorem states that "the work done on an object is the change in its kinetic energy".

Hence;

Kinetic energy = work done

Note that: work-done is expressed as:

Work done = f × d

Where f is force applied and d is distance traveled.

Given that:

Force applied f = 5 newton

Distance d = 2 meters

Work done = ?

Plug these values into the above formula and solve for the workdone.

Work done = f × d

Work done = 5N × 2m

Work done = 10Nm

Work done = 10 Joules

Therefore, the kinetic energy is 10 Joules.

Option B) 10 J is the correct answer.

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Answer:

here is answer!

Explanation:

Question 1:

Light bends when it transitions from air to glass due to differences in refractive indices. It follows an incident path in air, refracts at the air-glass boundary, and continues through the glass as a transmitted ray. Total internal reflection may occur if the angle of incidence is large enough.

Question 2:

Brightness in the wave model of light is determined by the amplitude and intensity of the light waves. Higher amplitudes and intensities correspond to brighter light. When multiple light waves overlap, their amplitudes add up, resulting in increased brightness

Answer:

the overall resistance increases

Explanation:

so, if a resistance is added in series to a circuit, the circuit resistance is greater

Answer:

a) v = 1524.7 m/s

b) T = 8.47*10^-4 s

   λ = 1.29 m

Explanation:

a) First, in order to calculate the speed of the sound wave, you take into account that the velocity is constant, then, you use the following formula:

\(v=\frac{d}{t}\)

d: distance traveled by the sound wave, which is twice the distance to the ocean bottom = 2*324 m = 648 m

t: time that sound wave takes to return to the sub = 0.425

\(v=\frac{648m}{0.425s}=1524.7\frac{m}{s}\)

hence, the speed of the sound wave is 1524.7 m/s

b) Next, with the value of the velocity of the wave you can calculate the wavelength of the wave, by using the following formula:

\(v=\lambda f\\\\\lambda=\frac{v}{f}\)

f: frequency = 1.18*10^3 Hz

\(\lambda=\frac{1524.7m/s}{1.18*10^3s^{-1}}=1.29m\)

And the period is:

\(T=\frac{1}{f}=\frac{1}{1.18*10^3s^{-1}}=8.47*10^{-4}s\)

hence, the wavelength and period of the sound wave is, respectively, 1.29m and 8.47*10^-4 s

The weight at the foot of each glass will be the same because it is decided by the stature of the fluid column over it and the increasing speed due to gravity. Be that as it may, the weight applied by the fluid on the dividers of the holder will be diverse due to contrasts in thickness.

Since natural product juice incorporates a higher thickness than water, the mass of the same volume of natural product juice will be more noteworthy than that of water.

This implies that the constraint applied by the natural product juice on the dividers of the glass will be more prominent than the constraint applied by the water on the dividers of its glass, as the drive is straightforwardly corresponding to mass.

Subsequently, the weight of the glass of natural product juice will be higher than the weight of the glass of water.

In rundown, in spite of the fact that the weight at the foot of each glass will be the same, the weight applied by the fluid on the dividers of the holder will be diverse due to the contrasts in thickness, with the natural product juice applying a more noteworthy weight. 

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Answer:

The value is  \(f_1 = 828 \ Hz\)

Explanation:

From the question we are told that

    The speed is \(v = 25 \ m/s\)

     The speed of the ambulance is \(u = 35 \ m/ s\)

     The frequency of the siren is  \(f = 850 \ Hz\)

Generally from Doppler effect equation we have that

        \(f_1 = \frac{v_s - v }{ v_s + u } * f\)

Here \(v_s\) is the velocity of sound with the value  \(v_s = 343 \ m/s\)

  =>   \(f_1 = \frac{343 - 25 }{ 343 + 35 } * 850\)

  =>   \(f_1 = 828 \ Hz\)

An electromagnet consists of a conductive wire wrapped around a magnetic core, creating a magnetic field when an electrical current is passed through it.

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Answer:

inventions

Explanation:

some philosophers do not believe that free will is required for moral responsibility. According to John Martin Fischer, human agents do not have free will, but they are still morally responsible for their choices and actions. ... We thus see that free will is central to many philosophical issues.

Answer:

Impulse is the amount of force put on an object in a certain amount of time. Therefore when kicking a ball and "kicking through it" it extends the period of time this force is applied in turn increasing its impulse. Impulse is equal to change in momentum. momentum is equal to mass times velocity and since mass of the ball doesn't change therefore the velocity is increased and performance increased.

After 42 minutes, there are 203 x \(10^{20\) atoms remaining of the radioactive substance.

To determine the number of atoms remaining after a certain amount of time has passed, we can use the formula for radioactive decay:

N(t) = N0 * \((1/2)^{(t / T)\),

where:

N(t) = number of atoms remaining at time t,

N0 = initial number of atoms (812 x  \(10^{20\) atoms),

T = half-life of the substance (21 minutes), and

t = time that has passed.

Let's calculate the number of atoms remaining after a given time.

Suppose the time passed is t = 42 minutes (twice the half-life).

N(t) = 812 x  \(10^{20\) * \((1/2)^{(42 / 21)\)

N(t) = 812 x  \(10^{20\) * \((1/2)^2\)

N(t) = 812 x  \(10^{20\) * 1/4

N(t) = 203 x  \(10^{20\) atoms.

So, after 42 minutes, there are approximately 203 x \(10^{20\) atoms remaining of the radioactive substance.

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Answer:

a) the final velocity is 35.75 ft/s

b) The final elevation is 45 ft

Explanation:

Given the data in the question;

Weight of object; W = 100 lbf

Change in kinetic energy; ΔE = 500 ft-lb

so

\(\frac{1}{2}\)m\(v_i^2\) - \(\frac{1}{2}\)m\(v_f^2\) = ΔE

\(\frac{1}{2}\)m\(v_i^2\) - \(\frac{1}{2}\)m\(v_f^2\) = 500

multiply both sides by 2

m\(v_i^2\) - m\(v_f^2\) = 1000

m( \(v_i^2\) - \(v_f^2\) ) = 1000

\(v_i^2\) - \(v_f^2\) = 1000/m

\(v_i^2\) - \(v_f^2\) = (1000)(g) / W

we know that, acceleration due to gravity g = 9.8 m/s² = 32.18 ft/s²

so we substitute

\(v_i^2\) - \(v_f^2\) = (1000)(32.18) / 100

\(v_i^2\) - \(v_f^2\) = (1000)(32.18) / 100

\(v_i^2\) - \(v_f^2\) = 32180 / 100

\(v_i^2\) - \(v_f^2\) = 321.8

since The initial velocity \(v_i\) is given to be 40 ft/s;

(40)² - \(v_f^2\) = 321.8

1600 - \(v_f^2\) = 321.8

\(v_f^2\) = 1600 - 321.8

\(v_f^2\) = 1278.2

\(v_f\) = √1278.2

\(v_f\) = 35.75 ft/s

Therefore, the final velocity is 35.75 ft/s

b)

we know that;

change in potential energy is;

ΔP.E = mg( h\(_f\) - h\(_i\) )

given that; increase in potential energy; ΔP.E = 1500 ft-lbf

and mg = Weight = 100 lbf

we substitute

1500  = 100( h\(_f\) - h\(_i\) )

h\(_f\) - h\(_i\) = 1500 / 100

h\(_f\) - h\(_i\) = 15 ft

given that, elevation of the object; h\(_i\) = 30 ft

h\(_f\) - 30 ft = 15 ft

h\(_f\) = 15 ft + 30 ft

h\(_f\) = 45 ft

Therefore, The final elevation is 45 ft

Answer:

Above is correct

Explanation:

\(\underline{\boxed{\large{\bf{Option \; A!! }}}} \)

Here,

We have to find the equivalent resistance of the circuit.

Here, \(\rm { R_1} \) and \(\rm { R_2} \) are connected in series, so their combined resistance will be given by,

\(\longrightarrow \rm { R_{(1,2)} = R_1 + R_2} \\ \)

\(\longrightarrow \rm { R_{(1,2)} = (2 + 2) \; Omega} \\ \)

\(\longrightarrow \rm { R_{(1,2)} = 4 \; Omega} \\ \)

Now, the combined resistance of \(\rm { R_1} \) and \(\rm { R_2} \) is connected in parallel combination with \(\rm { R_3} \), so their combined resistance will be given by,

\(\longrightarrow \rm {\dfrac{1}{ R_{(1,2,3)}} = \dfrac{1}{R_{(1,2)}} + \dfrac{1}{R_3} } \\ \)

\(\longrightarrow \rm {\dfrac{1}{ R_{(1,2,3)}} = \Bigg ( \dfrac{1}{4} + \dfrac{1}{2} \Bigg ) \;\Omega} \\ \)

\(\longrightarrow \rm {\dfrac{1}{ R_{(1,2,3)}} = \Bigg ( \dfrac{1 + 2}{4} \Bigg ) \;\Omega} \\ \)

\(\longrightarrow \rm {\dfrac{1}{ R_{(1,2,3)}} = \Bigg ( \dfrac{3}{4} \Bigg ) \;\Omega} \\ \)

Reciprocating both sides,

\(\longrightarrow \rm {R_{(1,2,3)}= \dfrac{4}{3} \;\Omega} \\ \)

Now, the combined resistance of \(\rm { R_1} \), \(\rm { R_2} \) and \(\rm { R_3} \) is connected in series combination with \(\rm { R_4} \). So, equivalent resistance will be given by,

\(\longrightarrow \rm {R_{(1,2,3,4)}= R_{(1,2,3)} + R_4} \\ \)

\(\longrightarrow \rm {R_{(1,2,3,4)}= \Bigg ( \dfrac{4}{3} + 2 \Bigg ) \; \Omega} \\ \)

\(\longrightarrow \rm {R_{(1,2,3,4)}= \Bigg ( \dfrac{4 + 6}{3} \Bigg ) \; \Omega} \\ \)

\(\longrightarrow \rm {R_{(1,2,3,4)}= \Bigg ( \dfrac{10}{3} \Bigg ) \; \Omega} \\ \)

\(\longrightarrow \bf {R_{(1,2,3,4)}= 3.33 \; \Omega} \\ \)

Henceforth, Option A is correct.

\(\underline{\boxed{\large{\bf{Option \; B!! }}}} \)

Here, we have to find the amount of flow of current in the circuit. By using ohm's law,

\( \longrightarrow \) V = IR

\( \longrightarrow \) 3 = I × 3.33

\( \longrightarrow \) 3 ÷ 3.33 = I

\( \longrightarrow \) 0.90 Ampere = I

Henceforth, Option B is correct.

\( \tt \purple{Hope \; it \; helps \; you, Army! \heartsuit } \\ \)

Answer:

27 degrees Fahrenheit is -2.78°c

Answer:

\(F_l=1140N\)

Explanation:

From the question we are told that:

Length\(l=3.00m\)

Support distance \(d=1.00m\)

Weight of diver \(W_d=500N\)

Weight of board \(W_b=280N\)

Generally the equation for Total Torque is mathematically given by

 \(F_T=W_d-W_b\)

 \(F_T=F_d-f_b\)

 \(F_T=-280-500\)

 \(F_T=-780\)

 \(F_T=780\)

Since we consider the horizontal axis

 \(\sum Y=0\)

 \(Fs-(\frac{1}{2}l*w_b)-(l-w_d)\)

 \(Fs-1.5*280-3*300=0\)

 \(F_s=1920N\)

Therefore  the force at the support point  1.00m from the force at the left-hand

 \(F_l=F_s-F_l\)

 \(F_l=1920-780\)

 \(F_l=1140N\)

R2 and R3 in parallel are equivalent to a single resistor of 18.69 ohms.

In series with R1, that makes 58.69 ohms for all three uvum as a group.

The fact that entropy is always increasing is demonstrated by several everyday examples, such as ice melting, clocks running down, dead organisms decaying, and mountains crumbling.

The second law of thermodynamics, which states that the entropy of an isolated system will always increase over time. Entropy is a measure of disorder or randomness in a system, and the second law states that in any natural process, the entropy of a system will always increase or stay the same. This means that energy will always flow from a higher state of organization to a lower state of organization, and that systems will naturally tend towards a state of maximum disorder.

ThIs is demonstrated by many everyday examples, such as the fact that ice melting will not reassemble itself, clocks running down will not get back itself to the previous time, or dead organisms decaying  will not assemble itself back in the complete form.

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The frequency of f3 is approximately 716 Hz.

The frequency of a repeated event is its number of instances per unit of time. Hertz (Hz), which stands for the number of cycles per second, is a popular unit of measurement.

a. Given two frequencies, f1 and f2, the frequency ratio is as follows:

frequency ratio= \(\frac{f2}{f1}\)

Inputting the values provided yields:

frequency ratio = \(\frac{576}{320Hz}\) =1.8.

As a result, the difference in frequency between f1 = 320 Hz and f2 = 576 Hz is 1.8.

b. Since there are 12 half-steps in an octave and a fourth is a distance of 5 half-steps, going down a fourth requires dividing the frequency by \(2^{(4/12)}\). Hence, once a fourth is subtracted, the frequency ratio between f and f1 is:

frequency ratio= \(\frac{f}{ (f1 /f2 ) }\)=  \(\frac{f}{ (f1 / 1.3348) }\)

By dividing the numerator and denominator by 1.3348, we may make this more straightforward:

frequency ratio= (f × 1.33348)/f1

As a result, (f × 1.3348) / f1 is the frequency ratio between f and f1 after descending a fourth.

c. (c) To find the frequency of f3, we need to know the interval between f1 and f3. Let's assume that f3 is a fifth above f2. The frequency ratio for a fifth is given by: \(2^{(7/12)}\) = 1.49831

Therefore, the frequency of f3 is:

f3 = f1 × (\(2^{(7/12)}\)) × (\(2^{(7/12)}\)) = 320 Hz × 1.49831 ×1.49831 = 716 Hz

Therefore, the frequency of f3 is approximately 716 Hz.

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Answer:

spirit of the team / game

Answer:

Its graph 1

Explanation:

She started at the origin and kept riding her bike until she stopped which causes the line to go staright because she's not moving.

The resulting amplitude of the two waves is 1.25 m

When two waves of different amplitudes interfere, the resulting wave pattern is determined by the relative phase and amplitude of the two waves. If the two waves are in phase, meaning that their peaks and troughs line up, they will reinforce each other and produce a wave with a larger amplitude. This is known as constructive interference.

In this case the amplitude of the resulting wave would be a combination of two amplitudes of the waves and that would be 1.25 m

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