If the frequency of a wave is doubled, what happens to that waves energy

Answer:

huh

Explanation:

Answer:

Muscle Tissue

Explanation:

Sorry if I'm wrong

Answer:

1.

Firstly removing off one strip and it leaves electrons behind, so the strip becomes positively charged.

2. The roll however is not negatively charged because it is "earthed " by the hand holding it, thus excess negatives repel each other away through the hand.

3.Tearing off the next strip and once more it leaves electrons behind, the new strip is also positively charged and will repel the first strip.

4. Then, tear two strips apart and one will leave electrons behind on the other. Meaning that one strip is positive and the other is negative and they will attract each other.

Please find attached photograph for your answer. Please do comment whether it is useful or not.

Answer:

a)  g’= 3.44 10⁻⁵ m / s²

b)  g ‘’ = 5.934 10⁻³ m / s²

Explanation:

For this exercise let's use the law of universal gravitation

         F = \(G \frac{m M}{r^2}\)

where m is the mass of the body under study, M the mass of the body that creates the force and r the distance between the bodies

         F = \(m \ ( G \frac{M}{r^2} )\)

the attractive force is called weight W = m g,

Thus

         g = \(G \frac{M}{r^2}\)

is called the acceleration of gravity

a) the acceleration created by the moon

       g' = G \frac{M}{r^2}

the mass of the moon is M = 7.36 10²² kg

the distance from the moon to the Earth's surface is

       r = D -R_e

       r = 3.84 10⁸ -6.37 10⁶

       r = 3.7763 10⁸ m

we calculate

     g’= \(6.67 \ 10^{-11} \ \frac{7.36 \ 10^{22}}{ (3.7763 \ 10^8)^2}\)

     g ’= 3.44 10⁻⁵ m / s²

b) the acceleration created by the sun

mass of the sun M = 1,9991 10³⁰ ka

the distance from the sun wears down the Earth's surface

        r = D -R_e

        r = 1.496 10¹¹ -6.37 10⁶

        r = 1.4959 10¹¹ m

let's calculate

       g ’’ = \(6.67 \ 10^{-11} \frac{1.991 \ 10^{30}}{ (1.4959 \ 10^{11})^2 }\)

       g ‘’ = 5.934 10⁻³ m / s²

The work-energy theorem states that the change in the kinetic energy of an object will be equal to the net work done on the object.

Mathematically, it can be expressed as;

ΔKE = W

Where; ΔKE represents the change in kinetic energy of the object,

W represents the net work done on the object.

This theorem states that when work is done on an object, it results in a change in its kinetic energy. If work is done on an object, its kinetic energy increases, and if work is done by an object, its kinetic energy decreases.

This theorem is a fundamental principle in physics that relates the concepts of work and energy, and it is often used to analyze the motion and behavior of objects in various physical systems.

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The force acting on the particle at t = 1 s is 24.4 N.

Mass of the particle, m = 2 units

Distance of the curve, r(t) = (4t²- t³)i - 5tj + (t⁴- 2)k

The velocity of the particle,

v = d[r(t)]/dt = (8t - 3t²)i - 5j + 4t³k

The acceleration of the particle,

a = d²[r(t)]/dt² = (8 - 6t)i + 12t²k

Let the time for which the force is acting be 1 second.

Therefore, acceleration at t = 1 is,

a₁ = 2i + 12k

Hence, the magnitude of acceleration,

|a₁| = √(2²+ 12²)

|a₁| = √148

|a₁| = 12.2 unit/s²

Therefore, the force acting on the particle at t = 1 s is,

F₁ = m x |a₁|

F₁ = 2 x 12.2

F₁ = 24.4 N

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Answer:

im useless

Explanation:

W=M*G

1kg=1000g

X=450kg

1000g/1000g

X=450/1000=0.45g*10N/g =4.5N or W=M*G

450kg*10N/Kg =4500N

W=M*G

1kg=1000kg

x=450kg

1000g/1000g=55/1000=0.055g*10N/g

=0.55N

= 2(4+6)

= 2×10

= 20

HOPE IT HELPS !!!!!!!!

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Answer:

2.1x10^6m/s

Explanation:

One electron has a charge of –1.602e-19 C

mass of electron is 9.1e-31 kg

mass of proton is 1.6726e−27 kg

mass ratio is 1.6726e−27 / 9.1e-31 = 1838

The force is constant, F

distance is constant, d

a = F/m

a increases by a factor 1838, as m decreases by that factor

a = a₀1838

v₀² = 2a₀d

v² = 2a₀d1838

v²/v₀² = 2a₀d1838 / 2a₀d = 1838

v² = 1838v₀² = 1838(45000)²

v = 45000√1838 = 2.1e6 m/s

Answer:

 v = 220 m / s

Explanation:

This is a kinematics exercise, the expression for velocity is

          v = 25 t² - 80 t - 200

asks the velocity for time t = 6 s.

let's calculate

        v = 25 6² - 80 6 - 200

        v = 220 m / s

The velocity for the first six seconds when acceleration is zero is -44 m/s.

The velocity of an object is the rate of change displacement with time.

The velocity of the object for the first six seconds when the acceleration is zero is calculated as follows;

\(a = \frac{dv}{dt} \\\\a = 50t - 80\\\\0 = 50t - 80\\\\50t = 80\\\\t = 1.6 \ s\)

Velocity when time = 1.6 s

\(v(1.6) = 25(1.6)^2 - 80(1.6) - 200\\\\v(1.6) = -264 \ m/s\)

The velocity for the first six seconds when acceleration is zero.

\(v = v_{a =0} + v_6\\\\v = - 264 \ + 25(6)^2 - 80(6) - 200\\\\v = -44 \ m/s\)

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Answer:

The  value is  \(d = 0.000293 \ m\)

Explanation:

From the question we are told that

   The wavelength is  \(\lambda = 633 \ nm = 633 *10^{-9} \ m\)

    The  distance of the screen is  \(D = 2.5 \ m\)

    The  order of the bright fringes is  \(n = 10\) (10  fringe + central maximum = eleven bright fringes )

      The distance between the fringe is  \(y = 54 \ mm = 0.054 \ m\)

Generally the condition for constructive interference is  

        \(d sin \theta = n * \lambda\)

=>     \(d = \frac{n * \lambda}{sin \theta}\)

Now  from the SOHCAHTOA rule the angle  \(sin \theta\) is mathematically represented as

      \(sin (\theta) = \frac{y}{D}\)

So  

          \(d = \frac{n * \lambda}{\frac{y}{D} }\)

=>       \(d = \frac{10 * 633 *10^{-9}}{\frac{0.054}{ 2.5} }\)

=>      \(d = 0.000293 \ m\)

The statement best describes the primary difference between scientific investigation and technological design is Scientific investigation involves experiments, and technological design involves products. Option D

It can be said that both scientific investigation and technolgical design require problem-solving, creativity, and rigorous methods.

However, both of them have different objectives. While Scientific investigation seeks to expand knowledge and understanding of the natural world. Research involvs hypothesis testing and different experiments;

on the other hand, Technological design, wants to create or improve products, processes, or systems to meet specific needs or solve particular problems.

It can then be defined as the application of scientific knowledge for practical purposes.

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Torque is a measure of the turning force applied to an object about a rotational axis. It is calculated as the product of the force applied to the object and the distance from the axis of rotation at which the force is applied.

Use the equation slope = mod to calculate the unknown mass (mo) for parcels A and C, setting d = 1.0 m, and parcels G and H, setting d = 1.5 m.

Record all data, tables, and four graphs for analysis.

The experiment demonstrates the application of torque in determining unknown masses and provides valuable insights into the concept of torque in physics.

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The index of refraction for the material is 1.612.

The index of refraction (n) of a material can be calculated using the formula:

n = c / v

where c is the speed of light in vacuum and v is the speed of light in the material.

Given that the speed of light in the material is 1.862x\(10^8\) m/s, we can substitute the values into the formula:

n = (3.00x\(10^8 m/s) / (1.862x10^8 m/s\))

Simplifying the expression:

n = 1.612

Therefore, the index of refraction for the material is approximately 1.612.

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A 117-lb student races up stairs with a vertical height of 5.7 m in 5.5 s to get to a class on the second floor. The power required to doing work against the gravity is 538.28 watts.

Power is the amount of energy transferred per unit time. The SI unit of power is the watt, which is equal to one joule per second. Power is sometimes also called as activity. Power is a scalar quantity.

Power = Work done/ Time taken = ΔE/ Δt

Power = ΔPE/ Δt = Δmgh/ Δt

where, ΔPE is the change in potential energy,

Δh is the change in height,

Δt is the change in time,

ΔE is the change in energy,

Δh = 5.7 m,

Δt = 5.5 s,

m = 117 lb = 53.0703 kg

P = Δmgh/ Δt

P = (53 × 9.8 × 5.7)/ 5.5

P = (2960.58)/ 5.5

P = 538.28 watts.

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The number of people you will stack to reach the top of the CN Tower (553 m) is 316 people

We'll begin by converting 175 cm to m. This can be obtained as illustrated below:

100 cm = 1 m

Therefore,

175 cm = (175 cm × 1 m) / 100 cm

175 cm = 1.75 m

Thus, 175 cm is equivalent to 1.75 m

The number of people needed to be stacked to get to the top of the CN tower can be o btained asfollow:

Number of people needed = Height of tower / height of a person

Number of people needed = 553 / 1.75

Number of people needed = 316 people

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Answer:

C 1 degree

Explanation:

Answer: 7.7Hz

Explanation:

The frequency of a sound wave produced by a wind instrument depends on the speed of sound in the medium, which in turn depends on the temperature of the medium. The speed of sound in air at room temperature (23°C) is approximately 343 meters per second. At body temperature (37.0°C), the speed of sound in air is approximately 349 meters per second.

To calculate the expected maximum change in frequency of a wind instrument when warmed up from room temperature to body temperature, we can use the following formula:

Δf/f = Δv/v,

where Δf is the change in frequency, f is the initial frequency (in Hz), Δv is the change in speed of sound, and v is the initial speed of sound (in meters per second).

Substituting the values, we get:

Δf/440 = (349 - 343)/343

Δf/440 = 6/343

Δf = (6/343) × 440

Δf ≈ 7.7 Hz

W = 25 J

Explanation:

Work done on an object is defined as

\(W = Fd = (10\:\text{N})(2.5\:\text{m}) = 25\:\text{J}\)

Answer:

1. G.P.E = 24 J

2. center of mass

Explanation:

Given the following data;

Mass = 2kg

Height, h = 1.2m

Acceleration due to gravity = 9.8 N/kg or m/s².

To find the gravitational potential energy;

Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.

Mathematically, gravitational potential energy is given by the formula;

\( G.P.E = mgh\)

Where;

Substituting into the formula, we have;

\( G.P.E = 2*1.2*9.8 \)

G.P.E = 23.52 to 2 S.F = 24 Joules.

Translation kinetic energy is defined as the energy of a system due to the motion of the system’s center of mass. The center of mass is typically where the mass of the object or particle is concentrated.

Answer:

Explanation:

Out of the given options, A would not describe a physical property of a substance. How a substance reacts with another substance is a chemical property, whereas physical properties are intrinsic characteristics that can be observed or measured without changing the substance's identity. B, C, and D are examples of physical properties - shininess, color, and mass respectively.

In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.

This relationship is described by the equation for the generated emf in a DC generator:

Emf = Φ * N * A * Z / 60

Where:

Emf is the generated electromotive force (in volts),

Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),

N is the number of turns in the armature winding,

A is the effective area of the armature coil (in square meters),

Z is the total number of armature conductors, and

60 is a constant representing the conversion from seconds to minutes.

From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.

The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.

The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.

Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.

By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.

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Answer:

It should be 125 CM

Explanation:

Volume is Length•Width•Height

A cube is equal on all lengths so, 5•5•5

Answer:

125cm cubed

Explanation:

just search volume calculator lol

12. The time taken for the journey is 400 s

13. The time taken for the train is 200 s

14. The time taken is 7 h

15. The time taken for the beetle is 12 s

16. The time taken for the journey is 0.0068 h

The time taken in each case as given by the question can be obtain as follow:

12. The time taken for the journey

Time taken = Distance / Speed

Time taken = 26000 / 65

Time taken = 400 s

13. The time taken for the train

Time taken = Distance / Speed

Time taken = 3200 / 16

Time taken = 200 s

14. The time taken to travel

Time taken = Distance / Speed

Time taken = 672 / 96

Time taken = 7 h

15. The time taken for the beetle

Time taken = Distance / Speed

Time taken = 1.08 / 0.09

Time taken = 12 s

16. The time taken for the journey

Time taken = Distance / Speed

Time taken = 35 / 5147

Time taken = 0.0068 h

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ANSWER:

a) 4 m/s^2

b) 520 N

STEP-BY-STEP EXPLANATION:

The centripetal acceleration can be calculated as follows:

And we calculate the centripetal force like this:

The torque that is produced at the center of the drum is 50 Nm.

The term torque has to do with a force that leads to a turning effect. I can use the example of a tap to show you what is meant by a torque. The force that is exerted on a tap causes the tap to turn and this is what we mean by saying that a torque would produce a turning effect.

We have the following;

Force = 250 N

Distance = 20 cm or 0.2 m

Torque = 250 N  *  0.2 m

= 50 Nm

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PLS MRK ME BRAINLIEST

Answer:

True

Explanation:

optical fibre consists of core and cladding. The signal is converted to light using transducers. The light travels across the cable undergoing multiple internal reflections. At the other end the light is converted back to Signal using transducers.

Answer: True

Explanation: Optical fiber uses the optical principle of "total internal reflection" to capture the light transmitted in an optical fiber and confine the light to the core of the fiber.

If I get this wrong im sorry

The average speed is defined as:

Then for the first 30 km it took:

hours.

The second distance of 50 km took:

Therefore the average speed is:

72 km/h.