the sonar computers receive a reflection from the destroyer at a frequency of 19 kilo-hertz. what useful information about the motion of the destroyer does this mean the computer can report?[explain]c.which wave phenomenon does the computer use to make this analysis?

The magnification of the image of Julitha Barber produced by the converging mirror is 0.0979

To find the magnification of the image, we need to use the formula:

magnification = -v/u,

where v is the distance of the image from the mirror, and u is the distance of the object from the mirror. Since the object is Julitha Barber standing at a distance of 553 m, we can take u as -553 m (negative because the object is on the same side as the mirror).
Now, we need to find the distance of the image from the mirror (v). For this, we can use the mirror formula: 1/v + 1/u = 1/f, where f is the focal length of the mirror, and is equal to half the radius of curvature (f = R/2). So, in this case, f = 1.20 × 102 m/2 = 60 m. Substituting the values in the formula, we get:
1/v + 1/-553 = 1/60
Solving for v, we get v = -54.12 m. (Note that the negative sign indicates that the image is virtual and upright.)
Now, we can use the magnification formula to find the magnification of the image:
magnification = -v/u = -(-55.6)/553 = 0.0979  (rounded to one decimal place)
Therefore, the magnification of the image of Julitha Barber produced by the converging mirror is 0.0.0979. This means that the image is 10 times smaller than the actual object and is virtual and upright.

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Hello!!

For this, use the formula:

\(\boxed{I=V/R}\)

\(\textbf{Being:}\)

\(\sqrt{}\) \(I = Current = ?\)

\(\sqrt{}\) \(V = Voltage = 160 \ V\)

\(\sqrt{}\) \(R = Resistance = 10\ \varOmega\)

\(\textbf{If we replace and resolve it}\)

\(I = 160\ V / 10\ \varOmega\)

\(I = 16\ A\)

\(\text{The current of that circuit is \textbf{16 Amperes}}\)

Inert gases require high temperatures and pressures to react with other elements.

A gas is considered to be inert if, under a specific set of circumstances, no chemical reactions occur. The noble gases, formerly known as the inert gases, frequently do not react with a wide variety of substances as argon and neon (at normal conditions).

Because they contain a fully filled valence shell and an electronic configuration of ns²np⁶, inert gases do not react with other chemicals.

As a result, they are referred to as noble gases and are in the periodic table's group 18.

But under  high temperatures and pressures Inert gases react with other elements.

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The suggestion for communicating with a seriously ill two year old child is A. Provide maximum physical relief and comfort.

When a child is sriosly ill, it is very neccessary for the parent as ll as th caregiver to make the move to seek for the best way to relief the child.

However suggestion for communicating with a seriously ill two year old child can be seen in he act of giving out maximum physical relief  which coud be from the caregiver as ell as the parent so that th child will be be freed from the sickness.

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To determine the greatest distance you can be from the base camp at the end of the third displacement, regardless of direction, we need more specific information about the magnitudes and directions of the displacements.

Displacement is a vector quantity that has both magnitude and direction. The distance covered during multiple displacements depends on the individual magnitudes and directions of each displacement. Without specific values, it is not possible to determine the exact greatest distance from the base camp.

If you provide the magnitudes and directions of the three displacements, I can help you calculate the total distance and determine the maximum possible distance from the base camp at the end of the third displacement.

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The energy produced from 50 g of hydrogen can be calculated using the Avogadro constant and the energy released per mole of hydrogen during a reaction.

The Avogadro constant is a physical constant that relates the number of particles in a given amount of substance, and it is equal to 6.022 x \(10^{23\)particles per mole. The reaction in question is not given, so let's assume it is the combustion of hydrogen to form water, which is a highly exothermic reaction.

The balanced equation for this reaction is: \(2H_2 + O_2\) → \(2H_2O\) + energy

From the equation, we can see that 2 moles of hydrogen gas H₂ react with 1 mole of oxygen gas O₂ to produce 2 moles of water (H₂O) and release energy.

To determine the energy released per mole of hydrogen during the reaction, we need to know the enthalpy of combustion (ΔH_(c)) of hydrogen. The ΔHc is the amount of heat released when 1 mole of a substance is burned completely in oxygen.

The ΔH(c) for hydrogen is -286 kJ/mol. Using this information, we can calculate the energy released per mole of hydrogen as follows: Energy released per mole of hydrogen = ΔH_(c)/2

Energy released per mole of hydrogen = -286 kJ/mol ÷ 2 Energy released per mole of hydrogen = -143 kJ/mol

Therefore, the energy released per reaction of hydrogen is -143 kJ. To find the total energy released from 4.972442722 x \(10^{23\)reactions of hydrogen, we need to multiply the energy released per reaction by the number of reactions:

Energy released = (-143 kJ/reaction) × (4.972442722 x \(10^{23\) reactions) Energy released = -7.121 × \(10^{28\) kJ However, this value is negative, which indicates that the reaction is exothermic and releases energy. To get the absolute value of the energy released,

we can take the magnitude of the negative value: Energy released = | -7.121 x\(10^{28\)kJ |

Energy released = 7.121 x \(10^{28\) kJ .

Therefore, the energy produced from 50 g of hydrogen is 7.121 x \(10^{28\)kJ.

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The Height of the roof is 225 feet .

Calculation :

y = h - gt2/2 = 0;

h = gt2/2;

v(t) = dy/dt = - gt;

t = - v(t)/g;

h = g/2·v2(t)/g2

= v2(t)/(2g)

= 120²ft2/s²/(2·32ft/s²) =

225 ft

In mathematics, height is defined as the vertical distance from top to bottom of an object. Also called "height". The term geometry height refers to the measurement of an object along the coordinate geometry's y-axis.

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Answer:

4b: comets

5a: supercluster

5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.

Answer:

balanced forces external forces

Explanation:

A body that is under a network of balanced external forces will experience no resultant force at all, since all the forces cancel themselves out. A body that is moving with this type of force will  experience no acceleration, since there is no force acting on them. This lack of acceleration means that the body maintains a constant velocity if it is already in motion, or zero when the body is at rest.

Answer:3.5 seconds

Explanation:

Answer:

force meter

Explanation:

Answer:

Wrong, the correct answer is "newton"

Explanation:

1 Newton = 1 kilogram-meter per second2

Answer:

K = (11*m*(ω*r)^2)/2

Explanation:

Not surprisingly, the formulas K = (1/2)*I*ω^2 and K = (1/2)*m*v^2 give the same result. They should, of course, since the rotational kinetic energy of a system of particles is simply the sum of the kinetic energies of the individual particles making up the system.

Answer:

Nitrogen has Electronic configuration 1s2 2s2 2p3. Fluorine has Electronic configuration 1s2 2s2 2p5 i.e. nitrogen has half filled p subshell that makes it more stable than fluorine and fluorine requires only 1 electron to complete it's octet to get stable..Therefore Fluorine is more reactive than Nitrogen.

Hope it helps you

Answer:

(3rd Question about the Black Widow Pulsar)

J1311 is a fast spinning neutron star, which means it emits strong beams of radiation from it's poles.

As the beam of the pulsar sweeps across the surface of the companion star, it heats it up and blows its material outward into space, thus decreasing its mass.

Oops.

That's my bad then.

We need more 50 g of KNO3

Solubility is the ability of a substance to dissolve in a solvent (usually a liquid) to form a homogeneous solution. It is a property of a substance and can be defined as the maximum amount of a substance that can dissolve in a given amount of solvent at a specified temperature and pressure.

The solubility of the KNO3 at this temperature is 80 g/100 g water. If we have already 3og of the solute then we need an extra 50 g to make a saturated solution.

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Answer:

6.25 sec

Explanation:

Given: initial velocity = 15 m/s final velocity = 25 m/s, and distance = 125 m

average velocity = (25 + 15)/2

Distance(D) = Rate(R) x Time(T)

125 = ((25 + 15)/2) x T

125 = 20T

T = 6.25 sec

Hence the required time to achieve final speed is 6.25 sec

Answer:

See below

Explanation:

Here is another way

d = vo t + 1/2 a t^2        a = change vel /change t =  10/t

125 = 15 t + 1/2 (10/t) t^2

125 = 20 t

t = 125/20 = 6.25 s

Answer:

-8m/s2

Explanation:

it decelerate. initial velocity u=50m/s and final velocity v= 10m/s and the time t= 5s

using this equation v= u+at

a= v-u/t= 10-50/5=-40/5= -8m/s2

Answer:

\( \boxed{\sf Acceleration \ (a) = -8 \ m/s^2} \)

Given:

Initial velocity (u) = 50 m/s

Final velocity (v) = 10 m/s

Time taken (t) = 5 seconds

To Find:

Acceleration (a) of the car

Explanation:

From equation of motion we have:

\( \boxed{ \bold{v = u + at}}\)

By substituting value of v, u & t in the equation we get:

\( \sf \implies 10 = 50 + 5a \\ \\ \sf \implies 5a + 50 = 10 \\ \\ \sf \implies 5a = 10 - 50 \\ \\ \sf \implies 5a = - 40 \\ \\ \sf \implies a = - \frac{40}{5} \\ \\ \sf \implies a = - 8 \: m {s}^{ - 2} \)

\( \therefore\)

Acceleration (a) of the car = -8 m/s²

Answer:

i think it is True

Answer:

180 m

Explanation:

i found the formula

Answer:

Your mass is the same no matter where you go in the universe; your weight, on the other hand, changes from place to place. Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force

In summary, mass is a measure of how much matter an object contains, and weight is a measure of the force of gravity acting on the object. ... The amount of gravity is directly proportional to the amount of mass of the objects and inversely proportional to the square of the distance between the objects.

Explanation:

If Kevin with mass 45kg pushes Kisha with a force of 54N, the magnitude of Kevin's acceleration is 1.2 m/s²

Kisha's mass = 60 kg

Kevin's mass = 45 kg

Kevin pushes off Kisha with a force of 54 N

Since it was Kevin that pushed Kisha, and the required force is 54N, we can look for Kevin's acceleration using the equation below

F  =  ma

The considered mass is Kevin's mass

54   =  45a

a   =   54/45

a   =    1.2 m/s²

The magnitude of Kevin's acceleration is 1.2 m/s²

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Answer: Smoke is Abiotic because it is not a living thing.

Explanation: Hopefully this helps u.  Have a great rest of your day. I hope this is the right answer

(i) Maximum tensile stress: (P * L * (d/2)) / ((π * d^4) / 64)

   Maximum compressive stress: - (P * L * (d/2)) / ((π * d^4) / 64)

(ii) Direct longitudinal stress due to compressive end-load: σ = P / (π * (d/2)^2)

(i) To derive the equation for the maximum longitudinal direct stresses due to the transverse concentrated load, we can use the bending equation for a cantilever beam:

σ = (M * y) / I

where σ is the stress, M is the bending moment, y is the distance from the neutral axis to the point of interest, and I is the moment of inertia of the cross section.

For a circular cross section, the moment of inertia is given by:

I = (π * d^4) / 64

where d is the diameter of the circular cross section.

The bending moment due to the transverse concentrated load is:

M = P * L

where P is the transverse concentrated load and L is the length of the cantilever beam.

Substituting these values into the stress equation, we get:

σ = (P * L * y) / ((π * d^4) / 64)

To calculate the maximum tensile and compressive values of the stress, we need to consider the extreme values of y. For a circular cross section, the maximum value of y is equal to half the diameter (d/2). Thus, we have:

Maximum tensile stress (σ_tensile) = (P * L * (d/2)) / ((π * d^4) / 64)

Maximum compressive stress (σ_compressive) = - (P * L * (d/2)) / ((π * d^4) / 64)

(ii) The direct longitudinal stress due to the compressive end-load can be calculated using the formula:

σ = P / (π * (d/2)^2)

Substituting the given values, we can calculate the numerical value of the direct longitudinal stress.

(iii) To plot the distribution of stress through the depth of the beam, we need to determine the stress at different depths. We can calculate the stress at various distances from the neutral axis using the stress formula:

σ = (M * y) / I

where M is the bending moment, y is the distance from the neutral axis, and I is the moment of inertia of the cross section.

(iv) By analyzing the plotted diagram of stress distribution, we can determine the location of the neutral axis with reference to the lower and upper surfaces of the beam cross section. The neutral axis is the line through the cross section where the stress is zero. It typically passes through the centroid of the cross section. By examining the stress distribution diagram, we can determine the position of the neutral axis relative to the cross section.

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Answer:

F(m)= mg(m)

m=F(m)/g(m)=72/1.6=45kg

F(e)= mg(e)= 45 x 10 m/s= 450N

The magnitude of the electric field at the third vertex of the triangle is determined as zero.

The electric field at the third vertex of the equilateral triangle due to the other charges placed on the first and second vertices is calculated as follows;

E = E(13) + E(23)

E = (kq₁)/r² + (kq₂)/r²

where;

E =  (kq₁)/r² - (kq₂)/r²

E = 0

Thus, the magnitude of the electric field at the third vertex of the triangle is determined as zero.

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It is observed that sedimentary rock was generated by compacting sedimentary layers; a meteorite struck Earth after the sedimentary layers developed. Option D is correct.

Space is captured by satellite camera systems in a variety of electromagnetic frequencies.

A satellite imager, in fact, is a detector equipped with a sensor that actively scans the changing surface of the Earth, registering the signal generated or reflected by the item or the surrounding region.

This image of northern Algeria was captured by a satellite camera in orbit, and it shows an impact crater, sedimentary rock strata, and a stream channel pouring out of the crater.

Algeria is located at the northernmost tip of the African continent. Algeria's terrain is dominated by the Sahara Desert and two mountain ranges.

It is observed that sedimentary rock was generated by compacting sedimentary layers; a meteorite struck Earth after the sedimentary layers developed; and water erosion formed a stream channel from the meteorite's impact zone.

Hence,option D is correct.

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The sine components of the velocity of the boat will balance out the velocity of the river making an angle of 37° with the vertical.

Every vector can be broken into some components, these components on vector addition would again give the resultant vector.

The components of the vector act independently.

Given:

Velocity of the boat in still water = 20km/h

Velocity of the river stream= 12km/h

We want the boat to go directly opposite to the starting point without any drift. For this one component of the boat's speed should be acting parallel to the speed of the stream and cancelling its effect in the motion of the boat.

Therefore preventing the drift of the boat now with the other perpendicular speed vector component the boat will cross the river.

Assumption:

The boat goes at an angle p with the vertical or perpendicular to the river stream.

v is the resultant speed of the boat

u is the velocity of the stream

According to the question:

v × sin(p) = u

Sin(p) = 0.6

p = 37°

Therefore, The sine components of the velocity of the boat will balance out the velocity of the river making an angle of 37° with the vertical.

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