what is the kinetic energy of a 60.0 g tennis ball traveling at 177.0 kilometers per hour? report your answer in joules (j).

The signal, but they are not as precise as FFT in terms of frequency resolution and accuracy.

The analysis of Doppler spectra is most accurately done using Fast Fourier Transforms (FFT). FFT is a mathematical algorithm that is used to convert a time-domain signal into its frequency-domain representation. In the case of Doppler spectra, FFT is used to analyze the frequency distribution of the scattered signals. By applying FFT to the received signal, the frequency components of the signal can be analyzed and used to determine the velocity and direction of the moving object.

Zero-crossing detectors, autocorrelation, and time interval histograms can also be used to analyze Doppler spectra, but they are not as accurate as FFT. Zero-crossing detectors detect the time at which a signal crosses a certain threshold, but they can be affected by noise and other sources of interference. Autocorrelation and time interval histograms can provide some information about the frequency distribution of the signal, but they are not as precise as FFT in terms of frequency resolution and accuracy.

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Answer: a periodic wiggle in time is called a vibration, while a wiggle in space and time is a wave. ... The source of all waves, whether mechanical or electromagnetic, is something that is vibrating.

Explanation:

Answer:

Option C is correct. The ball keeps moving forward and falls downward at the same time.

Explanation:

When the ball reaches the edge of the cliff, its forward motion will indeed continue due to its inertia. Inertia is the property of an object to maintain its state of motion. However, gravity will also be acting on the ball, causing it to accelerate downward.

As a result, the ball will move forward and descend downward at the same time. The trajectory of the ball will be a curved path that combines the horizontal motion (forward movement) and the vertical motion (downward fall) simultaneously. This curved path is known as a parabolic trajectory.

The exact shape of the trajectory will depend on factors such as the initial velocity, angle of the cliff, and air resistance. If there is no air resistance and the cliff is not too steep, the ball's trajectory may resemble a smooth parabolic curve. However, if there is air resistance or the cliff is steep, the trajectory might deviate from a perfect parabola.

Eventually, due to the downward acceleration caused by gravity, the ball's vertical motion will dominate, and it will fall straight down. But immediately after reaching the edge of the cliff, the ball will experience a combination of forward motion and downward descent.

According to the information we can infer that the complete sentence would be: The locking lever should be placed in the "unlocked" position.

To complete the sentence we have to read the available information and look for the term that completes it based in the context. In this case we can infer that the term is "unlocked" because to unlock the fifth wheel, the locking lever needs to be positioned in the "unlocked" position.

The fifth wheel is a coupling mechanism used in heavy-duty trucks and trailers to connect the trailer to the tractor unit. It allows for articulation and provides a pivot point for turning movements.

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The charge of the test charge is 5e-10 C.

To find the charge of the test charge, we can use the formula for the force exerted on a test charge by an electric field:

F = q * E

Where:

F is the force exerted on the test charge

q is the charge of the test charge

E is the strength of the electric field

We are given:

F = 4.095e-5 N (force)

E = 8.18e4 N/C (electric field strength)

Substituting the values into the formula, we can solve for q:

4.095e-5 N = q * 8.18e4 N/C

Divide both sides of the equation by 8.18e4 N/C:

q = (4.095e-5 N) / (8.18e4 N/C)

Simplifying the expression:

q = 5e-10 C

Therefore, the charge of the test charge is 5e-10 C.

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The normal force that the counter exert on the box of cereal in upward direction is 3.8 N.

A contact force is a normal force. A normal force cannot be applied between two surfaces that are not in contact. For instance, if a table and a box's surfaces are not in contact, they cannot exert typical pressures on one another.

In contrast, when two surfaces (such as a box and a table) come into contact, they exert a normal force on one another that is perpendicular to the contacting surfaces. The strength of this normal force will be as great as is required to stop the surfaces from piercing one another.

Given:

Weight of the box is 3.8 N.

So,  the normal force that the counter exert on the box of cereal is 3.8 N and it acts upwards.

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Answer:

2nd one,

Its keep going, never return back

Answer:

The straight line.

Explanation:

I did this in an exam.

Two units of magnetic field named after famous Western scientists are Weber and Gauss.

In electromagnetism, the magnetic field is a vector field that represents the magnetic effects of electric charges in motion. The magnetic field is defined as a field in which an electric charge will experience a magnetic force. It is produced by electric charges and currents. A magnetic field is created by a magnet or a moving electric charge or other magnetic fields.

The strength of a magnetic field is determined by the number of magnetic field lines or magnetic fluxes that pass through a surface placed perpendicular to the direction of magnetic field lines. It is calculated in the unit of Tesla (T). In addition to Tesla, there are two other units of magnetic field named after famous Western scientists: Gauss and Weber. A magnetic field with a strength of one gauss is equivalent to one ten-thousandth (0.0001) of a Tesla.

Gauss is a unit of magnetic flux density and is named after the famous German mathematician Carl Friedrich Gauss. Weber is named after Wilhelm Eduard Weber, and it is a unit of magnetic flux. The Weber is equivalent to the magnetic flux that crosses one square meter of surface area at right angles to a magnetic field of one tesla.

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Answer:

Gravity increase:

mass increases

distance decrease

gravity decrease:

mass decrease

distance increase

hope this helps

have a good day :)

Explanation:

Answer:the real answer is c. Variable

Explanation:

I tried D and it was wrong:(

Answer:

c

Explanation:

got it right

Answer:

B. lower, greater

...............

Answer:

2 Hz.

Explanation:

Frequency is simply defined as the number of appearances of a periodic event occurring per time. It is usually measured in cycles/second.

Now, in this question, we are told that there are 2 cycles for each second.

Thus, we can say that the frequency is 2 cycles/1 s = 2 Hz.

Answer:

Explanation:

Here we are given sound moving in air at 43.2 m/s and that has a frequency of 2.11 hz and we need o calculate the Wavelength.

Using formula:

\( \\ \: \: \longrightarrow \: \: \:{ \underline{ \boxed{ \sf Frequency = \dfrac{Wave \: speed}{Wave \: length}}}} \\ \)

Where,

On Substituting the values, we get:

\(\\ \sf \: \: \: \longrightarrow \: \: \: 2.11 = \dfrac{43.2}{Wave \: Length} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:Wave\: Length = \frac{43.2}{2.11} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:{ \pink{ \underline{Wave \:Length = 20.47 m}} }\\ \\ \)

Hence,

\(\large\boxed{\bold{Formula: λ= \frac{v}{f}}}\)

In this question all the values are given so we'll simply have to substitute the values and solve.

Let's solve!

We'll have to divide the velocity or speed by the frequency.

Substitute the values according to the formula.

\( λ= \frac{43.2}{2.11}\)

Calculator answer:

\(\bold{λ= 20.47393365 \: m}\)

Now, we can round off to the nearest hundredth.

The value in the thousandths place is smaller than 5 so we won't have to round up.

Final answer:

\(\large\boxed{\bold{λ= 20.47 \:m}}\)

Therefore, the wavelength is 20.47 meter.

Answer: Option A

Answer:

6, 3, 2, 5, 4, 1

Explanation:

Let's describe them from smallest to largest. In fact the size order is not exact as there are exceptions.

An asteroid is a rocky body which lies in the asteroid belt between Mars and Jupiter. They are typically quite small object. The largest asteroid Ceres has been reclassified as a dwarf planet.

A moon is typically a rocky body which is in orbit around a planet. Some moons such as our Moon are quite large and are typically bigger than asteroid. Some moons can actually be smaller than some asteroids.

A planet is a nearly spherical body which is in orbit around the Sun. Planets are larger than moons.

A star is what planets orbit around. It is the source of light and heat. Our Sun is a star which is many times bigger than all of the planets.

A solar system is a star and all of its planets, asteroids, comets and other bodies. It is significantly bigger than a star.

A galaxy, such as our Milky Way Galaxy, is a collection of solar systems orbiting around a central core. Most galaxies have a supermassive black hole at their centres.

Galaxies also form clusters which are large scale structures.

The universe is everything. It contains billions of galaxies.

They do not transmit sufficient energy to kill cancer cells.  Longer wavelengths than visible light define infrared waves (IR), a kind of electromagnetic radiation.

The electromagnetic radiation known as infrared, also referred to as infrared light, has wavelengths that are longer than those of visible light and shorter than those of radio waves. Wavelength range and sources: between 780 nm and 1 mm. Infrared radiation (IR), commonly referred to as heat radiation, is that region of the electromagnetic spectrum with wavelengths above red visible light, between 780 nm and 1 mm. IR can be divided into three groups: IR-A (780 nm-1.4 m), IR-B (1.4-3 m), and IR-C, commonly known as far-IR (3 m-1 mm).

IR wavelengths range from 700 nanometers (frequency 430 THz), which corresponds to the visible spectrum's notional red edge, to 1 millimeter (300 GHz). Long-term IR exposure, according to medical studies, can harm the lens, cornea, and retina, causing cataracts, corneal ulcers, and retinal burns, respectively. Workers can use gear with IR filters or reflective coating to help prevent long-term IR exposure. Electrical warmers, food-cooking appliances, remote controls, optical fibres, security systems, and thermal imaging cameras that can see individuals in the dark all employ infrared (IR) light. whereas, gamma rays, which have the highest energy (and thus the most penetrating), for instance, have higher frequencies than infrared waves.Gamma rays are the electromagnetic waves with the highest energy, highest frequency (300 EHz), and shortest wavelengths (1 pm) (1,24 MeV) and are used in treating cancer.

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Answer:

4m/s²

Explanation:

Initial velocity (u) = 0 m/s

Final velocity (v) = 8 m/s

Time taken (t) = 2 sec

Acceleration (a) = ?

We know

\(a = \frac{v - u}{t} \\ = \frac{8 - 0}{2} \\ = \frac{8}{2} \\ = 4 \: m |s ^{2} \)

Hope it will help :)

Answer:

Gravity

Explanation:

That's easy because gravity is the only thing that can pull us down that hard at that fast without anything helping it.

Answer:

Explanation:

the Abu Dhabi Petroleum Company

The first commercially viable oil discovery was made at Bab in 1960. In 1962, the company was renamed the Abu Dhabi Petroleum Company. Exports began to flow from the Jebel Dhanna terminal on December 14, 1963.

Answer:

hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Answer:

A major difference between tangential acceleration and centripetal acceleration is their direction. Centripetal means “center seeking”. ... Tangential acceleration results from the change in magnitude of the tangential velocity of an object. An object can move in a circle and not have any tangential acceleration.

The direction of acceleration is a key distinction between tangential acceleration and centripetal acceleration. Centripetal is defined as "center-seeking." The amount of an object's tangential velocity changes, which causes tangential acceleration. Without experiencing any tangential acceleration, an item can move in a circle.

Acceleration is the rate at which the speed and orientation of a moving object change over time. When a spot or object moves faster or slower along a straight line, it is said to be accelerated. Even though the speed is constant, motion on a circle accelerates so because the direction is always shifting. Both by and to acceleration for all other types of motion.

It is a vector quantity because it has both magnitude and direction.

Any object's rotation experiences tangential acceleration, which is the speed at which the tangential velocity fluctuates. When an object is moving, it behaves in a tangential direction. An object moving in a circle will also experience the very same tangential velocity action.

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Answer:

The earth is hotter

Explanation:

the average temperature on earth is 57 degrees Fahrenheit the average on the moon is -298 degrees Fahrenheit

Answer:

Yes ,the balloon gets stick to Wood,wall etc

Explanation:

Because of static friction between two surfaces

Answer:

10m/s

Explanation:

Change in velocity is given by:

final velocity - initial velocity

Here final velocity is 10 m/s and the initial velocity is 0m/s. This is because initially the bird was a rest.

ΔV = \(V_{f} - V_{i}\)

ΔV = 10 - 0

ΔV = 10m/s

Answer:

See below

Explanation:

Find the slope of the graph (gradient)

  pick a convenient point with easy to read coordinates...say  (30 s  , 150 m)

       150 m / 30s = 5 m/s

The only non-contact force listed is gravity

The difference in voltage between the two parallel plates is 1.0 Volt.

Voltage, also known as electric potential difference, is a measure of the electric potential energy per unit charge between two points in an electric field.

The difference in voltage between the two parallel plates can be determined using the formula:

ΔV = Ed

where ΔV is the voltage difference, E is the electric field strength, and d is the distance between the plates.

Substituting the given values into the formula, we have:

ΔV = (50.0 N/C) * (2.0 cm)

Before calculating the voltage difference, it's important to ensure that the units are consistent. Since the distance between the plates is given in centimeters (cm), we need to convert it to meters (m) for the equation. 1 cm is equal to 0.01 m, so the distance becomes:

d = 2.0 cm * (0.01 m/cm) = 0.02 m

Substituting this value back into the formula, we have:

ΔV = (50.0 N/C) * (0.02 m)

Calculating this expression, we find:

ΔV = 1.0 V

Therefore, the difference in voltage between the two parallel plates is 1.0 Volt.

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Answer: gravity

normal force

friction

Explanation:

A force is refered to as the interaction which when unopposed, will lead to a change in an objects motion. The velocity of an object will be changed when force is applied.

Since Alisa s riding down a hill and she and the skateboard are considered to be a single object, then the forces that are acting on her include gravity, normal force and friction.

Answer:

Wrap a sensing bulb in insulation to protect it from external factors, ensuring accurate temperature measurement. This creates a barrier between the bulb and the surrounding environment, preventing heat transfer and influencing the temperature only by the object or substance in contact.

A sensing bulb must not be affected by the air or liquid being cooled. It should be wrapped in insulation so that only the temperature affects the bulb.

The purpose of insulation is to protect the sensing bulb from any external factors that could interfere with its ability to accurately measure temperature. By wrapping the sensing bulb in insulation, it creates a barrier between the bulb and the surrounding air or liquid. This insulation prevents heat transfer from the surrounding environment to the bulb, ensuring that the temperature being measured is only influenced by the object or substance that the bulb is in contact with.

For example, let's say we have a temperature sensor in a refrigerator. The sensing bulb, which is responsible for measuring the temperature inside the fridge, is wrapped in insulation. This insulation prevents any fluctuations in the air temperature of the fridge from affecting the sensing bulb directly. Instead, the temperature recorded by the sensing bulb will primarily be influenced by the temperature of the items inside the fridge.

In summary, by wrapping the sensing bulb in insulation, we can ensure that only the temperature of the object or substance in contact with the bulb affects its readings. This allows for accurate temperature measurement without interference from the surrounding air or liquid.

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Everyday life is dominated by man-made electromagnetic radiation: microwave ovens cook food, radar waves guide aeroplanes, television sets receive electromagnetic waves provided by broadcasting stations, and infrared rays from heaters offer warmth.

Electromagnetic fields are produced by a variety of household gadgets, including low-energy light bulbs, television and computer displays, electric heaters, and even electric blankets. All of these popular objects produce electric or electromagnetic fields and/or need them to function.

Exposure to powerful enough low frequency fields can cause dizziness, light flashes, and tingling or pain due to nerve activation. Exposure to strong enough radiofrequency fields can cause heating of bodily tissue.

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Spherical aberration in the primary mirror of a reflecting telescope is generally avoided by making the mirror surface a parabolic shape.

Spherical aberration in the primary mirror of a reflecting telescope is a significant issue that can affect image quality. This problem arises when light rays entering the telescope at different distances from the central axis converge at different points, leading to a blurred image. To avoid spherical aberration, telescope designers typically use a parabolic-shaped mirror instead of a spherical one.

A parabolic mirror ensures that all incoming light rays, regardless of their distance from the central axis, converge at a single focal point. This results in a sharp and clear image, free from the distortion caused by spherical aberration. In contrast, using a spherical mirror would cause the light rays to converge at multiple points, leading to a blurry image.

It is important to note that other factors, such as the refraction of light by turbulent currents of air with differing densities, can also cause image distortion. These atmospheric effects, however, are not directly related to the telescope's mirror shape.

In some advanced telescope systems, rapidly changing the tilt and shape of an intermediate mirror can help compensate for atmospheric disturbances. This adaptive optics technique allows for improved image quality by correcting for the atmospheric distortions in real-time. Nevertheless, the primary mirror's parabolic shape remains crucial for avoiding spherical aberration and maintaining optimal image clarity in a reflecting telescope.

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