waves that are breaking along the shore and are forming a curling crest over an air pocket are called: question 24 options: gravity waves. plunging breakers. spilling breakers. surf. swells.
Answers
Waves that are breaking along the shore and are forming a curling crest over an air pocket are called, plunging breakers. Option b is correct.
Waves that are breaking along the shore and forming a curling crest over an air pocket are called plunging breakers. These waves are formed when the wave height becomes too steep for the wave to continue as a swell, causing the wave to break and form a curling crest. This type of wave is commonly seen at beaches with steep shorelines and can be dangerous for swimmers and surfers as the force of the breaking wave can cause strong currents and underwater turbulence. Option b is correct.
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Fatima is watching her pet cat, Winter, napping in the sun. Fatima is curious about the heart rate of Winter when she is napping, so she develops this scientific question: Does a cat’s heart rate change while it is napping
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We have that for the question, Does a cat’s heart rate change while it is napping?
Cats heart rate do not increase while napping.
The range of heart beat of a cat is 140 and 220 bpm
From the Question we are asked
Does a cat’s heart rate change while it is napping.
The answer is NO
Cats heart rate do not increase while napping. Cat have a normal heart beat maximum of 220 beats per minute consistently.The range of heart beat of a cat is 140 and 220 bpm
Therefore
There is something with a cat with heart rate above this number.
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What does the amplitude of sound refer to?
the sound’s volume
the sound’s pitch
the sound’s duration
the sound’s frequency
Answers
Answer:
2) the sounds pitch
The strength or level of sound pressure
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K=(1/2)my^2 v?
A.) K=mv
B.) m= Kv^2
C.) v=sqrt(2k/m)
D.) none of above
Answers
Answer:
The answer is C. The explanation is below.
Kayaks have been used for thousands of years to hunt and fish in Arctic regions. The total volume of a particular kayak is 285 litres (which is 0.285 m3). It has a mass of 75 kg. The man using it has a volume of 0.066 m3. When sitting in the kayak, half of man’s volume is inside the kayak. The density of the human body is about 1000 kg/m3.Calculate the density of the empty kayak.
Answers
Given,
The volucme of Kayak, V₁=0.285 m³
The mass of the Kayak when the man is sitting in it, m₁=75 kg
The volume of the man, V₂=0.066 m³
The density of the man, d=1000 kg/m³
The mass of the man inside the Kayak is given by,
\(m_2=V_2\times d\)On substituting the known values,
\(\begin{gathered} m_2=0.066\times1000 \\ =66\text{ kg} \end{gathered}\)The mass of the empty Kayak is,
\(\begin{gathered} M=m_1-m_2 \\ =75-66 \\ =9\text{ kg} \end{gathered}\)Given that only half of the volume of the man is inside the Kayak when he is sitting in it. Half of the man's volume which is outside the Kayak will be considered in the total volume of the Kayak when he is sitting in it. Thus we have to subtract half of his volume, which is outside the Kayak, while we calculate the density of the Kayak.
Thus the density of the empty Kayak is
\(\rho=\frac{M}{V_1-\frac{V_2}{2}}\)On substituting the known values,
\(\begin{gathered} \rho=\frac{9}{0.285-\frac{0.066}{2}} \\ =35.71kg/m^3 \end{gathered}\)Thus the density of the Kayak is 35.71 kg/m³
At extreme position, velocity is zero but acceleration is maximum in SHM.how can you theoretically explain it?
Answers
At extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because of maximum displacement of pendulum.
Why acceleration is maximum when velocity is zero in SHM?At extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because at extreme points the motion of the pendulum is at zero which means that velocity is zero but the pendulum attains maximum displacement. Acceleration is maximum when it gets the extreme position because the displacement is maximum at extreme position. If the velocity of the simple harmonic motion is maximum, the acceleration must be equal to zero and we know that the acceleration is equal to zero only when the particle or object is at initial position.
So we can conclude that at extreme position, velocity is zero but acceleration is maximum in Simple Harmonic motion because of maximum displacement of pendulum.
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a baseball is moving at a speed of 2.2\,\dfrac{\text{m}}{\text{s}}2.2 s m 2, point, 2, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction when it strikes the catcher's glove. the padding of the glove is compressed by 2.4\,\text{mm}2.4mm2, point, 4, start text, m, m, end text before the ball comes to a stop. we want to find the average acceleration of the baseball while it is compressing the glove. which kinematic formula would be most useful to solve for the target unknown? assume the initial direction of travel is the positive direction.
Answers
The average acceleration of the baseball while it is compressing the glove is 1008 10⁻³ m / s². The kinematic formula used is v² = v₀² - 2 a x.
What is acceleration?Acceleration is the rate of change in a moving object's speed and direction over time. When a point or object accelerates or decelerates, it is moving straight forward. Motion on a circle increases despite the same speed because the direction is always changing.
Because the acceleration occurs in the opposite direction as the speed and the end speed is zero, the sign is negative.
0 = v₀² - 2 an x
a = v₀² / 2x
Consider converting the magnitudes to the SI system.
x = 2.4 mm (1 meter / 103 mm) = 2.4 103 m
Let's compute.
a = 2.2²/2 2.4 10⁻³
a = 1008 10⁻³ m / s²
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Consider the video you just watched. The two pucks of equal mass did not move linearly (they came to a stop) after the collision due to the conservation of linear momentum. However, since the two pucks mutual center of mass does not coincide with either of the pucks velocity vectors, they have angular momentum. This becomes evident after the collision when due to conservation of angular momentum the two pucks spin around their mutual center of mass.
Suppose we replace both hover pucks with pucks that are the same size as the originals but twice as massive. Otherwise, we keep the experiment the same. Compared to the pucks in the video, this pair of pucks will rotate
Answers
The pair of pucks that are twice as massive will rotate at a slower angular speed after the collision due to conservation of angular momentum.
When two pucks of equal mass collide, the total linear momentum is conserved. However, if we replace the pucks with ones that have twice the mass, the total mass and the moment of inertia of the system increase.
Since the total angular momentum is also conserved, this means that the angular speed after the collision will be slower for the pair of pucks with twice the mass.
The conservation of angular momentum ensures that the two pucks will still spin around their mutual center of mass, but they will do so at a reduced rate compared to the original pucks in the video.
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There is one foot in 12 inches.
How many feet are in 22.2 inches?
Round your answer to the nearest 10th's place.
Answers
Answer: 1.85 feet
Explanation:
How do I find the summation fo Fx and summation of Fy without knowing variables?
As well as ax and ay?
Example:
Answers
By resolving forces into their components and adding them together, you can determine the resultant force in the x and y directions without knowing the actual variables involved.
To find the summation of Fx and summation of Fy without knowing the specific variables, you need to have information about the forces acting on an object in the x and y directions. If you have the magnitudes and directions of individual forces, you can use vector addition to determine the resultant force in each direction.
Here's a general approach to finding the summation of Fx and Fy:
Identify the forces: Start by identifying all the forces acting on the object and their directions. Each force can be represented as a vector with a magnitude and direction.
Resolve forces: If the forces are not already given in the x and y directions, you need to resolve them into their x and y components. Use trigonometry (sine and cosine) to determine the components of each force along the x-axis (Fx) and the y-axis (Fy).
Sum the components: Add up all the individual components of forces acting in the x-direction to find the summation of Fx. Similarly, add up all the individual components of forces acting in the y-direction to find the summation of Fy.
Summation of Fx = F1x + F2x + F3x + ...
Summation of Fy = F1y + F2y + F3y + ...
Combine components: If there are forces acting at an angle to the x and y axes, you can use the Pythagorean theorem and trigonometry to find the resultant force in each direction.
Summation of Fx = √(F1x^2 + F2x^2 + F3x^2 + ...) (taking into account both magnitudes and directions)
Summation of Fy = √(F1y^2 + F2y^2 + F3y^2 + ...) (taking into account both magnitudes and directions)
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A runner does 300J of work in 10 seconds. What is his power output?
Answers
Answer:
30
Explanation:
Power=work/time
power=300/10
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why why scientists uses atomic watches?
Answers
Answer:
Atomic clocks are the most accurate time and frequency standards known, and are used as primary standards for international time distribution services, to control the wave frequency of television broadcasts, and in global navigation satellite systems such as GPS.
wavelength.
24. The diagram shows a simplified energy level diagram for
an atom. The arrows represent three electron transitions
between energy levels. For each transition:
a) Calculate the energy of the emitted or absorbed
photon.
b) Calculate the frequency and wavelength of the
emitted or absorbed photon.
c) State whether the transition contributes to an
emission or an absorption spectrum.
04
-22
39
7.8
Answers
Transition 1 contributes to an absorption spectrum, while transitions 2 and 3 contribute to an emission spectrum.
How are the energy of the emitted or absorbed photon and frequency related?The energy of the emitted or absorbed photon is directly proportional to the frequency of the photon, as given by the equation E = hf.
What distinguishes an absorption spectrum from an emission spectrum?An emission spectrum is produced when an atom emits light, while an absorption spectrum is produced when an atom absorbs light. In an emission spectrum, the wavelengths of light emitted by the atom are characteristic of the atom's energy levels, and appear as bright lines on a dark background.
In an absorption spectrum, the wavelengths of light absorbed by the atom are missing from a continuous spectrum, appearing as dark lines on a bright background.
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when there is a current, electrons move near the speed of light through a conductor.
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When a current flows through a conductor, electrons move at a very high speed. In fact, they can move near the speed of light. This is because the flow of electrons in a current is driven by an electric field. The strength of this field determines the rate at which the electrons move.
One important thing to note is that the speed at which electrons move in a current is not constant. It varies depending on the characteristics of the conductor, the strength of the electric field, and other factors. However, in most cases, electrons in a current will move at speeds that are quite high.
In summary, when there is a current, electrons move through a conductor at high speeds, often near the speed of light. This is due to the electric field that drives the flow of electrons. While the speed of electrons in a current can vary, it is generally quite fast and can have important implications for the behavior of electrical systems.
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Question 3 Advanced Signal Integrity (20pts) - Sketch and describe the "lonely pulse" waveform - Describe a solution to this particular problem and sketch the resulting waveform - Sketch a simple way it can be implemented for a differential signaling system like the one discussed in class
Answers
Waveform shaping is a solution that involves adding a pre-distortion filter to the transmitter circuit. The resulting waveform is narrower and more accurate. For differential signaling systems, pre-emphasis and de-emphasis filters can be used.
The "lonely pulse" waveform is a signal integrity issue caused by reflections and interference in digital communication systems. The waveform appears as a single pulse that is wider and distorted compared to the original pulse.
To solve this problem, waveform shaping can be used, which involves adding a pre-distortion filter to the transmitter circuit. This filter modifies the pulse shape to compensate for the distortion during transmission, resulting in a more accurate pulse shape at the receiver. The resulting waveform is narrower, more accurate, and has reduced overshoot and undershoot.
For a differential signaling system, the technique can be implemented using pre-emphasis and de-emphasis filters at the transmitter and receiver, respectively. The implementation is simple and requires only passive components, such as resistors and capacitors. This technique compensates for frequency-dependent attenuation and distortion and results in a more accurate pulse shape at the receiver.
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Suppose you have hydrogen nuclei (gyromagnetic ratio 42.58) in an NMR spectrometer in which a magnetic field of 1.0 Tesla is applied. At what frequency the sample will start emitting?
6.77 MHz
0.02 MHz
42.58 MHz
0.14 MHz
Answers
The sample will start emitting at a frequency of 42.58 MHz. The frequency at which the sample of hydrogen nuclei will start emitting in an NMR spectrometer can be determined using the gyromagnetic ratio and the applied magnetic field.
The gyromagnetic ratio is a constant that relates the angular momentum of a particle to its magnetic moment. For hydrogen nuclei, the gyromagnetic ratio is 42.58 MHz/T.
In this case, the magnetic field applied is 1.0 Tesla. To calculate the frequency, we can multiply the gyromagnetic ratio by the magnetic field strength:
Frequency = gyromagnetic ratio * magnetic field strength
Frequency = 42.58 MHz/T * 1.0 T
Therefore, the sample will start emitting at a frequency of 42.58 MHz.
It's important to note that NMR frequencies are typically in the radio frequency (RF) range, which is why the result is given in MHz (megahertz).
The other answer choices provided (6.77 MHz, 0.02 MHz, and 0.14 MHz) do not match the correct frequency for hydrogen nuclei in the given magnetic field.
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An argon gas processor has a first cost of $20,000 with a $5,000 salvage value after 5 years. What is the Book Value at year 3;BV3=? Select one: a. BV3= $13,000 b. BV3= $10,000 c. BV3= $12,000 d. BV3= $11,000 An argon gas processor has a first cost of $20,000 with a $5,000 salvage value after 5 years. What is the Depreciation at year 3, D3=? Select one: a. D3= $4,000 b. D3= $3,000 c. D3= $2,000 d. D3= $5,000
Answers
To calculate the book value at year 3 (BV3), we need to determine the accumulated depreciation at year 3. The depreciation is calculated by subtracting the salvage value from the initial cost and dividing it by the number of years.
Initial cost: $20,000
Salvage value: $5,000
Number of years: 5
Depreciation per year = (Initial cost - Salvage value) / Number of years
Depreciation per year = ($20,000 - $5,000) / 5 = $3,000
Accumulated depreciation at year 3 = Depreciation per year * Number of years
Accumulated depreciation at year 3 = $3,000 * 3 = $9,000
Book value at year 3 = Initial cost - Accumulated depreciation at year 3
Book value at year 3 = $20,000 - $9,000 = $11,000
Therefore, the Book Value at year 3 (BV3) is $11,000 (option d).
To calculate the depreciation at year 3 (D3), we can simply use the depreciation per year, which is $3,000. Therefore, the Depreciation at year 3 (D3) is $3,000 (option b).
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A toy cart with a weight of 10N moves with a constant velocity of 2 m/s to the right on a horizontal table. According to Newton's Laws of Motion, which of the following statements is correct?
a
The table exerts a force of 10N upward on the toy cart.
b
The toy cart exerts a force of 10N upward on the toy table.
c
The toy cart exerts a force of 2N downward on the table.
d
The toy cart exerts a force of 2N to the right on the table.
Answers
Answer:
Its A ik cuz i just studied it when i was answering this question...
Explanation:
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A red bouncy ball is dropped from 10 meters high. As it fails a wind is blowing horizontal at the speed of 15 m/s. How far horizontally will the ball hit from the point at which it was dropped? Please round to 1 decimal place. You will enter in units of meters but NUMBER ONLY.
Answers
1Q|C Light passes from air into flint glass at a nonzero angle of incidence. (a) Is it possible for the component of its velocity perpendicular to the interface to remain constant? Explain your answer.
Answers
When light passes from air into flint glass, the component of its velocity perpendicular to the interface will not remain constant due to the change in the speed of light between the two mediums.
When light passes from air into flint glass at a nonzero angle of incidence, the component of its velocity perpendicular to the interface will not remain constant. This is because light travels at different speeds in different mediums, and the speed of light in air is different from the speed of light in glass.
When light enters a medium with a different refractive index, it changes direction. This phenomenon is known as refraction. The angle of refraction depends on the angle of incidence and the refractive indices of the two mediums involved.
According to Snell's law, the sine of the angle of incidence divided by the sine of the angle of refraction is equal to the ratio of the speeds of light in the two mediums. Therefore, when light enters the glass, its velocity changes, and as a result, the component of its velocity perpendicular to the interface also changes.
In summary, when light passes from air into flint glass, the component of its velocity perpendicular to the interface will not remain constant due to the change in the speed of light between the two mediums.
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Tell us what you know about the nursing profession. How are you an underrepresented minority in nursing or an economically disadvantaged student?
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The nursing profession offers specialized care from infancy to death. Social, psychological, and economic issues are some of the challenges faced by minority nurses.
The nursing profession is how significant?It is the nurse's responsibility to maintain continuity of care and develop a close closeness with the patient in order to foster trust and foster a climate that is safe for recovery. Numerous worldwide nursing codes of practice presently endorse patient advocacy.
Why is nursing necessary and what is it?Health promotion is promoted by nurses, who also teach patients and the general public how to avoid disease and damage, care for patients and help with treatment, take part in rehabilitation, and offer support. No other medical specialist has a job with such a wide-ranging and complex scope.
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A car drives 30 m north in 1.5 seconds and drives 60 east in 2 seconds. What is the average velocity
Answers
Answer:
19.2 m/s
Explanation:
From the question,
Velocity = displacement/time = d/t
V = d/t.................................. Equation 1
Average velocity = Total displacement/ total time
Total dispalcement = √(30²+60²) = √4500 = 67.08 m
Total time = 1.5+2 = 3.5 s.
Substitute these value into equation 1
V = 67.08/3.5
V = 19.2 m/s.
Hence the average velocity is 19.2 m/s
The parameter given for the car during transit is 30 m north in 1.5 seconds and drives 60 east in 2 seconds, we want to find the average velocity.
average velocity is 19.2 m/s
Solution
The expression for Average velocity is
Average velocity = Total Displacement/ Total time Taken...............Eqn 1
Total Displacement = √(30²+60²) = √4500 = 67.08 m
Total time = 1.5+2 = 3.5 s.
From the Equation 1
Average Velocity = 67.08/3.5
V = 19.2 m/s.
Therefore, the average velocity is 19.2 m/s
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A solenoid 1.82 m long and 3.36 cm in diameter carries a current of 15.0 A. The magnetic field inside the solenoid is 20.7 mT. Find the length of the wire forming the solenoid.
Answers
The length of the wire forming the solenoid is approximately 33.43 meters..
To find the length of the wire forming the solenoid, we need to determine the number of turns in the solenoid and then multiply that by the circumference of each turn.
First, we can find the number of turns per meter (n) using the formula for the magnetic field inside the solenoid: B = μ₀ * n * I, where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ Tm/A), n is the number of turns per meter, and I is the current.
Rearranging the formula to solve for n, we have:
n = B / (μ₀ * I)
Plugging in the values given:
n = 20.7 × 10⁻³ T / (4π × 10⁻⁷ Tm/A * 15.0 A)
n ≈ 174.06 turns/m
Since the solenoid is 1.82 m long, the total number of turns (N) is:
N = n * length = 174.06 turns/m * 1.82 m ≈ 316.79 turns (approximately)
Now, we can find the circumference of each turn using the diameter (d) of the solenoid:
Circumference (C) = π * d = π * 3.36 cm
Converting diameter to meters:
C = π * 0.0336 m ≈ 0.1056 m
Finally, to find the length of the wire (L), we multiply the total number of turns by the circumference of each turn:
L = N * C = 316.79 turns * 0.1056 m/turn ≈ 33.43 m
So, the length of the wire is approximately 33.43 meters.
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Find the markdown price. Shelly Ward purchased a mountain bike for 35 percent off the regular price of $899. how much is the markdown?
Answers
The markdown price for a mountain bike is $584.35
What is markdown price?Markdown price is the discount offered by the shopkeepers to the customers to increase the sales rate.
M.P = S.P (1-r/100)
The following expression can be used every time we have to find the markdown price.
Substitute Selling price S.P =$899 and the percent r =35/100 =0.35, we get
M.P = $899(1-0.35)
M.P =$584.35
Thus, the markdown price is $584.35
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the ability to adjust to an artificially displaced or even inverted visual field is called
Answers
Answer:
méthode if séparation muddy water
Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.
How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.
Answer please
Answers
Answer:
The correct answer is B
Lichens produce chemicals which dissolve and weather the rocks.
based on this model, how much of the energy will the tertiary consumers receive if the primary consumers have 3600 joules of energy?
Answers
The tertiary consumers obtain 36 joules of energy if the primary customers use 3600 joules.
What are the 9 types of energy?Energy, radiant energy, energy source, nuclear energy, electric power, motion energy, energy, elastic energy, and gravitational energy are among the several types of energy.
Why is energy important?Modern medical technology, transportation, communications, computers, and numerous other items are all driven by energy. Particularly urgent is the need for affordable, reliable energy in rising economies. It might even save a person's life.
Briefing:Consequently, if the main consumers use 3600 joule of energy,
the tertiary customers get
=3600×10%×10% joules
= 36 joules.
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what is si unit?mention any give phisical quantities with their si unit.
Answers
The SI base units are the standard units of measurement defined by the International System held in France is called Si unit.
The color of light emitted during a flame test depends on
A) the location of electrons only
B) the size of the atom only
C) the size of the atom and the location of protons
D) the location of electrons and size of the atom
the answer is D
Answers
How can you decrease the amount of energy an object has?
Answers
Answer: Hello There!...............
You decrease the kinetic energy by either stopping the object and let it rest (which would give it potential energy) or changeing the slope.
Explanation:
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Depending on the sort of energy involved, you can use a variety of techniques to reduce the quantity of energy an object contains. To slow motion in mechanical systems, you can add friction or resistance, which turns kinetic energy into heat.
When dealing with thermal energy, you can place the object in a cooler environment, which will enable it to transmit heat and cool down. It is possible to lessen an object's potential energy by changing its height or location within a gravitational field. Reactions that release energy can dissipate chemical energy. These strategies essentially entail aiding energy transfer or conversion to a less energetic state, hence lowering the object's overall energy content.
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A possible answer to a scientific problem is called a
Answers
Answer:
A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable.
Explanation:
Answer:
hypothesis is likely tobe the answer, im indian