what is the dynamic range of a 16bit sound, i.e. the power ratio in db of the loudest and most quiet signal? (1p)

We first determine the total force ni he horizontal axis, that is:

Now, we determine the acceleration:

So, the acceleration is approximately 2.935 m/s^2.

The coefficient of kinetic friction turns out to be 0.534 whereas the coefficient of static friction is 0.595.

(a) mass = m = 6 kg

   g = 9.81 m/s^2

   F =  k m g

k = F / m g  = 35 / ( 6  * 9.81 ) = 0.595

The box can't move on its own because of static friction; this friction must be overcome by an opposing force that is strong enough for the box to move. When surfaces are moving, a force called kinetic friction, also known as dynamic friction, opposes the relative movement of the surfaces.

A force that holds an item at rest is called static friction. The friction that people experience when attempting to move a stationary object on a surface without actually causing any relative motion between the body and the surface is defined as:

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Answer:

true

hope this helps !

Answer:

B

Explanation:

When the ball is dropped, Earth's mass generates a gravitational force, making it fall downward towards the ground.

Answer:

True

Explanation:

Answer:

A change of odor

Hope this helps! :)

Answer:

0.84 m

Explanation:

Given in the y direction:

Δy = 0.60 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

0.60 m = (0 m/s) t + ½ (9.8 m/s²) t²

t = 0.35 s

Given in the x direction:

v₀ = 2.4 m/s

a = 0 m/s²

t = 0.35 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (2.4 m/s) (0.35 s) + ½ (0 m/s²) (0.35 s)²

Δx = 0.84 m

Answer:

matter

Explanation:

Answer:

Answer 3: When a balloon goes up higher in the air, its size will increase. Since there's less air in the upper atmosphere, there's less stuff pushing back on the balloon, and hence the pressure is lower, which allows the balloon to expand

Answer: C

Explanation:

As the balloon rises, the gas inside the balloon expands because the atmospheric pressure surrounding the balloon drops. The atmosphere is 100 to 200 times less dense at the float altitudes than on the ground. and as the air is heated inside the balloon it causes it to rise upwards (because it is lighter than the cooler air on the outside). When the pilot needs to bring the balloon down again, he simply reduces the temperature of the air inside the balloon causing it to slowly descend.

The lowest rock layer is a layer that must be rich in organic matter that was subjected to heat and pressure over time during the formation of oil and gas.

The lowest rock layer can be explained as;

The lowest rock layer refers to the lowermost part of the Earth's mantle, which is a thin rock layer (approximately 250 km).

In the Earth, the layers of rocks are progressively deposited, thereby pressing them to the bottom to generate sedimentary rocks.

The lowest rock layers on the bottom must be rich in organic matter to form fossil fuels.

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Answer:

Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.

Explanation:

hope it was helpful

The work required to move the magnets is approximately -39.586 Joules (rounded to three decimal places).

To solve this problem, we can use the concept of work done, which is given by the formula:

Work = Force * Distance

First, let's find the value of the constant k using the initial conditions provided. We know that when the magnets are 0.04 meters apart, the force between them is 4 newtons. Using the given formula:

4 = \(k^2 / 0.04^2\)

Rearranging the equation:

\(k^2 = 4 * 0.04^2\)

\(k^2\) = 0.64

Taking the square root of both sides:

k = √0.64

k = 0.8

Now we can find the work required to move the magnets from a distance of 0.02 meters apart to a distance of 0.11 meters apart. Let's denote the initial distance as d1 = 0.02 m and the final distance as d2 = 0.11 m.

First, we'll calculate the initial force:

Force1 = \(k^2 / d1^2\)

Force1 = \(0.8^2 / 0.02^2\)

Force1 = 40 newtons

Then, we'll calculate the final force:

Force2 =\(k^2 / d2^2\)

Force2 = \(0.8^2 / 0.11^2\)

Force2 ≈ 0.4136 newtons (rounded to four decimal places)

Now we can find the work done by subtracting the initial force from the final force:

Work = (Force2 - Force1) * (d2 - d1)

Work = (0.4136 - 40) * (0.11 - 0.02)

Work ≈ -39.586 newton-meter (rounded to three decimal places)

Since 1 Joule = 1 Newton * 1 meter, we can convert the units:

Work ≈ -39.586 Joules (rounded to three decimal places)

Note that the negative sign indicates that work is done against the force of the magnets (since the magnets are moving farther apart), resulting in a decrease in potential energy.

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Answer: C!! <3

Explanation: (a p e x)

In wireless transmission, the digital signals become weaker as they move away from the source. Hence, option (C) is correct.

Although most people take wireless data transfer for granted, when one stops to think about how it truly works, it does appear miraculous. Of course, there is a scientific explanation that a non-WLAN expert can comprehend.

In essence, the manipulation of radio waves allows for wireless data transmission. These waves are produced by creating electrical pulses in a natural way. Then, in order to transmit sound or data, these radio waves might have their amplitude or frequency altered. This procedure can be enhanced to increase the amount of data that can be communicated and the speed at which it can be transmitted.

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The momentum of the 5kg object before the collision is; 50kgm/s.

The momentum of a body is mathematically evaluated as the product of its mass and velocity of motion.

According to the question;

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Answer:

27v

Explanation:

10 ohm resistor is the first in series. so it will have the entire current.

voltage across 10ohm resistor = 10*2.7= 27v

Answer:

NO

A medium is required for voice transmission (normally air).

No such medium is present in outer space.

Answer:

The momentum of the second ball will equal to the original momentum of the first moving ball.

Explanation:

Let m be the mass of both billiard balls. Initially, the first ball is moving at speed u and the second ball is at rest. After the collision the second ball moves with a velocity v

Using the law of conservation of momentum, we can write

The momentum before collision = The momentum after collision

mu + m(0) = m(0) + mv

mu = mv

Initial momentum of first ball = final momentum of second ball

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Answer:

Anything that has motion cannot be stopped

Explanation:

Answer:

equal and opposite reaction

Explanation:

The study titled "Infant Heart-Rate Measurement and Oxygen Desaturation Detection with a Digital Video Camera Using Imaging Photoplethysmography" focuses on using imaging photoplethysmography with a digital video camera to measure heart rate and detect oxygen desaturation in infants.

The study aims to explore a non-invasive method for monitoring the heart rate and oxygen saturation levels of infants using a digital video camera and imaging photoplethysmography. Photoplethysmography is a technique that measures changes in blood volume by detecting variations in light absorption or reflection.

By utilizing a digital video camera, the researchers capture video recordings of the infant's skin and analyze the subtle changes in color caused by blood flow. These changes provide valuable information about the infant's heart rate and oxygen desaturation levels.

The use of imaging photoplethysmography with a digital video camera has several potential benefits, including its non-invasive nature, convenience, and potential for remote monitoring. This approach eliminates the need for attaching sensors or electrodes to the infant's body, which can be uncomfortable and restrictive.

The study holds promise for applications in neonatal care, where continuous monitoring of vital signs is crucial for early detection of health issues. It may contribute to improving the quality of care and reducing the risk of complications in infants.

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Answer:

1.12

Explanation:

it is correct on Acellus

The total force on charge q(3) is 1125 x \(10^{-3}\) Newton

We have three charges in a straight line.

We have to find the force on charge q3 due to charge q1 and q2.

The force between two point charges is directly proportional to the product of the magnitude of two point charges and inversely proportional to the square of the distance between them. Mathematically-

\(F = \frac{1}{4\pi\epsilon_{o}}{\frac{qQ}{r^{2} } } }\)

We have -

\(q_{1} =q_{2} =q_{3} = -5 \times 10^{-6} C\)

The distance between -

\(q_{1}\;and\;q_{2} = q_{2} \;and\;q{3}\) = 0.5 m

Now, Force on charge q(3) due to charge q(1) -

F(1 → 3) = \(\frac{1}{4\pi\epsilon_{o}}{\frac{5\times 10^{-6} \times 5\times 10^{-6} }{1^{2} } } } = 9\times 10^{9} \times 25 \times 10^{-12} = 225\times 10^{-3}\) N (repelling force)

Force on charge q(3) due to charge q(2) can be calculate similarly as -

F(2 → 3) = 900 x \(10^{-3}\) N(repelling force)

Now, both the forces are in same direction, so we can add them algebraically -

\(F_{net}\) = F(1 → 3) + F(2 → 3) = 1125 x \(10^{-3}\) N

Hence, the total force on charge q(3) is 1125 x \(10^{-3}\) Newton

Hence, the wavelength of light in nano meters is 0.0177 x   nm.

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28.284 m/s fast it was  going when it was 10m high from the ground.

Calculation :

Given:

The maximum height reached by the ball s=30 m

The object will come into rest at the maximum height.

The gravity always acts downward so the acceleration of the ball ⇒a=g=−10 m/s²

From the third equation of motion:

v²=u²+2as

Thus the initial velocity of the ball is:

u=\(\sqrt{v^{2}-2as}\)

=\(\sqrt{0-2(-10m/s^{2} )(30 m)}\)

u=24.495 m/s

From the first equation of motion:

v=u+at

The time is taken by the ball to reach the maximum height is:

t=(v−u)/a

=[0−(24.495 m/s)]/(−10 m/s²)

t=2.4495 s

Now From the third equation of motion:

v²=u²+2as

Thus the velocity of the ball at 10 m is:

v=\(\sqrt{u^{2} +2as}\)

=\(\sqrt{(24.495 m/s)^{2} -2(-10 m/s^{2} )(10 m)}\)

v≈28.284 m/s

Velocity is a vector representation of the displacement experienced by an object or particle over time. The standard unit for velocity magnitude (also called velocity) is meters per second (m/s).

Velocity is the percentage of time an object moves along a path, and Velocity is the speed and direction of an object's movement. That is, velocity is a scalar value and velocity is a vector.

Velocity (v) is a vector quantity that measures displacement (or change in position Δs) with respect to change in time (Δt) and is given by the equation v = Δs/Δt.

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Answer:

VELOCITY

Explanation:

Since the gravitational potential energy of an object is directly proportional to its VELOCTY above the zero position, a doubling of the velocity will result in a doubling of the gravitational potential energy.

The ratio of the canister's velocity, as measured on Earth, to the speed of light is approximately 0.99.

To determine the ratio of the canister's velocity, as measured on Earth, to the speed of light (c), we need to apply the relativistic velocity addition formula. Let's denote the velocity of the canister as observed from Earth as v. According to the given information, the velocity of the spaceship relative to Earth is 0.95c, and the velocity of the canister relative to the spaceship is 0.65c.

Using the relativistic velocity addition formula, we have:

\(v = (v1 + v2) / (1 + (v1 * v2) / c^2)\)

Substituting the given values, we get:

\(v = (0.95c + 0.65c) / (1 + (0.95c * 0.65c) / c^2)\)

Simplifying further, we have:

v = 1.6c / (1 + 0.6175)

v = 1.6c / 1.6175

v ≈ 0.99c

Therefore, the ratio of the canister's velocity, as measured on Earth, to the speed of light is approximately 0.99.

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For an image formed 16 cm behind a convex lens whose focal length is 8 cm, the position of the object is mathematically given as

o=16cm

Question Parameter(s):

An image is formed 16 cm behind a convex lens

focal length is 8 cm

Generally, the equation for the   is mathematically given as

1/f=1/o+1/i

Therefore

1/8=1/o+1/16

o=16cm

In conclusion, the position is

o=16cm

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Answer:

Apply the equation of motion

v

=

u

+

a

t

The initial velocity is

u

=

5.12

m

s

−

1

The acceleration is

a

=

0.933

m

s

−

2

The time is

t

=

5.7

s

The final velocity is

v

=

u

+

a

t

=

5.12

+

(

0.933

)

×

(

5.7

)

=

10.438

m

s

−

1

During time interval t2, the voltage is decreasing from the maximum value to 0, as the magnetic flux linkage with the coil is reduced.

When an isolated magnetic North pole is discovered and dropped through the set-up (magnet through a coil experiment), there is a change in magnetic flux linkage within the coil. Therefore, the induced electromotive force (EMF) will cause a voltage pattern to form.The Faraday's Law of Electromagnetic Induction states that when there is a change in magnetic flux linkage within a coil, an EMF is induced in the coil.

In this scenario, the magnetic flux linkage increases as the magnetic North pole enters the coil and decreases when it exits the coil, which will result in a change in the direction of the induced EMF within the coil.The voltage pattern obtained from the experiment depends on the rate at which the magnetic North pole is dropped through the set-up and the number of turns of the coil.

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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:

it increases

Explanation:

The final speed of the cart increases in relation to the pattern in the position data.

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Brands measure ad effectiveness to determine the return on investment (ROI) for their advertising campaigns and to evaluate their success in achieving their marketing objectives.

Advertising is a form of communication that promotes or sells a product, service, or idea to a target audience. The purpose of advertising is to inform, persuade, and remind potential customers about a product or service in order to influence their purchasing decisions. Advertising can be conducted through various media channels such as television, radio, print, outdoor, online, and mobile. Advertising is often used by businesses, non-profit organizations, and government entities to reach a large audience and create awareness about their products, services, or campaigns. Effective advertising requires careful planning and execution, including the development of a target audience, the selection of appropriate media channels, and the creation of a message that appeals to the audience. Advertising can also be controversial and raise ethical questions, especially when it involves deceptive or misleading claims, privacy concerns, or political or social issues.

Measuring ad effectiveness helps brands understand which ads are resonating with their target audience, which channels and tactics are driving the most engagement and conversions, and how to optimize their marketing spend for maximum impact. It also provides insights into what is working well and what needs to be improved, enabling brands to make data-driven decisions and continuously improve their advertising strategies. Ultimately, measuring ad effectiveness helps brands maximize the impact of their advertising budget and achieve their business goals.

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