Increasing the amplitude of a sound wave produces a sound with
A: lower speed
B: higher pitch
C: shorter wavelength
D: greater loudness
Answers
Answer:D
Greater loudness because up and up
Related Questions
What are the three forms of water discussed in the passage?
Answers
Answer:
The three forms of water are gas, liquid, and ice, I'm not sure if these were mentioned in the passage since you did not attach a picture.
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An astronaut landed on the moon. He decided to test Newton's Laws of Motion by playing golf on the moon.
The golf ball was hit. The ball traveled much farther on the moon than a golf ball that is hit with the same force on the Earth. Which statement BEST explains this phenomenon?
Select TWO correct answers.
The unbalanced force of friction from Earth's atmosphere slows the ball down, causing the ball not to travel as far.
The moon's gravitational pull is greater than the pull of the Earth, causing the ball to travel farther.
The ball's inertia is greater on the moon because of the space, causing it to travel farther.
The mass of the ball is the same on the Earth and the moon, so the ball will travel farther on the moon.
The moon's gravitational pull is not as strong as the Earth's gravitation pull, causing the ball to travel a greater distance.
Answers
Here are the two claims: Because of the moon's weaker gravity, the ball has a higher inertia and moves farther. As the moon has no atmosphere, there is no air resistance to cause the ball to slow down.
What happens if a golf ball is struck on the moon?The ball would fly six times further and land about 2 km (or 1.25 miles) further on the moon, where the gravity acceleration is six times smaller. A professional golfer could hit a drive on the moon this far if they had the right equipment.
On the moon, did astronauts play golf?On the moon, Alan Shepard of Apollo 14 played golf. He held a contingency sample extension handle with a no. 6 iron head in his hand as his "club." For personal things, each astronaut was given a set amount of weight. Shepard took the club head and three golf balls with his.
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Hierarchy of the universe this is due today pls help me
Answers
Answer:
what is the question.
Explanation:
What happens to light when it travels from air into water?
Answers
3. Emanuel Zacchini, the famous human cannonball of the Ringling
Bros. and Barnum & Bailey Circus, was fired out of a cannon with
a speed of 18.0 m/s at an angle of 30.0° to the horizontal. If he
landed in a net 56.6 m away at the same height from which he
was fired, how long was Zacchini in the air?
Answers
(a) The height from which he was fired is 4.13 m.
(b) The time spent in air by Zacchini is 3.63 seconds.
What is the time of motion of Zacchini?
The time of motion of Zacchini is the time spent in air by Zacchini or the total time taken for Zacchini to fall from the given height to the ground level and it can be calculated by applying the following kinematic equation.
X = Vₓt
where;
X is the horizontal displacement of ZacchiniVₓ is the horizontal velocity of Zacchinit is the time of motion of ZacchiniX = Vcosθ(t)
The given parameters;
the horizontal displacement of Zacchini, X = 56.6 mthe velocity of Zacchini, V = 18 m/sthe angle of projection, θ = 30⁰t = X / Vcosθ
t = (56.6) / (18 x cos30)
t = 3.63 seconds
The height at which the cannon was fired is calculated as;
H = u²sin²θ/2g
H = (18² x (sin 30)² ) / (2 x 9.8)
H = 4.13 m
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Mitosis can sometimes result in mutations, which can be repaired?
True or False
Answers
Answer:
True
Explanation:
Mitosis is the process of cell division that produces two identical daughter cells. Occasionally mutations can occur during DNA replication or the other stages of mitosis. However, cells have mechanisms for DNA repair that can correct these mutations, ensuring the integrity of the genetic material.
How might variation in the color of beetles help them survive ?
Answers
Answer:
they can blend in with their suroundings
Explanation:
draw a figure of a simple pendulum explain its amplitude and effective length ?
Answers
Answer:
Explanation:
A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.
In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.
Amplitude:
The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."
Effective Length:
The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."
It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.
Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.
Which of the infrared regions is considered to be the fingerprint region? Select one: O A. 2200 nm · 1000 nm O B. 4000 nm 1400 nm O C. 1400 nm --400 nm O D. 1400 cm-1 - 400 cm-1 O E. 4000 cm n-1 - 1400 cm-1
Answers
The infrared spectrum is divided into three regions: the near-infrared, mid-infrared, and far-infrared regions. Among these, the mid-infrared region is the most widely used for molecular identification. Within the mid-infrared region, the fingerprint region is considered to be the range between 4000 cm-1 to 1400 cm-1.
This range is known as the fingerprint region because it contains a unique set of absorption bands that are specific to the functional groups present in a molecule. These absorption bands are like fingerprints, which can be used to identify and differentiate between different molecules.
The fingerprint region is particularly useful in identifying complex molecules, such as proteins, carbohydrates, and nucleic acids. Therefore, the fingerprint region is an essential tool in the field of infrared spectroscopy, which is widely used in chemical and biomedical research.
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Which statement describes an example of constructive interference?
A. Two TV signals reach an antenna and cancel each other out.
B. A cell-phone signal is lost when you pass through a certain area.
C. oil spilled in a water puddle shows different colors of light.
D. Light forms bars on a surface after passing through two slits.
Answers
Light that has passed through two slits and formed bars on a surface is an example of constructive interference.
Which of the following describes constructive interference?Constructive interference is the phenomenon where the total amplitude of two waves is equal to the sum of their separate amplitudes when two waves are in phase and their maxima add.
What is two-wave constructive interference?A single amplitude equal to the sum of the individual wave amplitudes is produced by the mutual reinforcement of two or more waves of similar frequency and phase during constructive interference. Phase differences between waves must be zero for constructive interference to occur.
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A robin is flying around and its velocity vvv as a function of time ttt is given in the graph below where rightwards is the positive velocity direction. What is the robin's displacement \Delta xΔxdelta, x from t=0\,\text st=0st, equals, 0, start text, s, end text to 1.5\,\text s1.5s1, point, 5, start text, s, end text?
Answers
Answer:
-0.75
Explanation:
Khan Academy gives answer here.
A 40kg girl and a 50kg boy are facing each other on a friction-free rollerskates. The girl pushes the boy, who moves away at a speed of 3 m/s. What is the girl's
speed?
Your answer
Answers
Answer:
Explanation:
The Law of Momentum Conservation, just like the Law of Thermodynamics about energy, says that momentum is neither created nor destroyed but is conserved, meaning it has to go somewhere. If the girl pushes the boy and they are both on friction free skates, then the girl will also react to the push. Momentum Conservation says
\((m_gv_g+m_bv_b)_b=(m_gv_g+m_bv_b)_a\) In words this says that the mass times the velocity of the girl plus the mass times the velocity of the boy before the push has to equal the mass times velocity of the girl plus the mass times velocity of the boy after the push. Mathematically,
\((40.0*0+50.0*0)_b=(40.0v+50.0*-3)_a\)
The left side of this is equal to 0. On the right, I made the velocity of the boy negative. We could have made it positive and it wouldn't have mattered. The sign will only be important to the result because if the sign of the girl's velocity is the same as the boy's, she is moving in the same direction as he is; if it's different, she is moving in the opposite direction.
0 = 40.0v - 150.0 and
-40.0v = -150.0 so
v = 3.75 This means that when she pushes the boy one way, mometum is conserved and she moves in the opposite direction and at a greater velocity (because her mass is less). Physics is a wonderful thing, isn't it!?
What does gravity, electricity, and magnesium have in common?
Answers
Answer:
magnesium (Mg), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table, and the lightest structural metal. Its compounds are widely used in construction and medicine, and magnesium is one of the elements essential to all cellular life.
Explanation:
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PLEASE HELP!!!
Write the sentences in your copybook and draw a line through one of the words in
bold to complete each of these sentences about alkali metals correctly.
Alkali metals generally become more / less dense going down the group.
The melting and boiling points of alkali metals increase / decrease down the group.
The softness of alkali metals increases / decreases going down the group.
The speed with which alkali metals react with oxygen increases / decreases going
down the group.
Answers
Answer:
Densities increase down the group
MP and BP decrease down the group
Softness increased going down the group
Speed of reacting increases going down the group
the electric field inside the conductor of the coaxial sheath is zero. question 5 options: true false
Answers
The given statement "the electric field inside the conductor of the coaxial sheath is zero" is true.
Hence, the correct option is true.
What is the electric field inside the conductor of the coaxial sheath? In a coaxial cable, the electric field inside the conductor of the coaxial sheath is zero. The coaxial cable has a core conductor, a dielectric insulator, and a surrounding shield conductor. Coaxial cables are used in a variety of applications, including computer networking, video surveillance systems, and other applications.
Coaxial cables have the capacity to carry high-frequency electrical signals with low loss. In a coaxial cable, the electric field inside the conductor of the coaxial sheath is zero. Because of the shielding effect of the outer conductor or shield, the electric field is effectively confined to the space between the center conductor and the shield conductor.
This makes the coaxial cable an ideal transmission medium for high-frequency signals, as the signal is protected from interference and noise caused by external electrical sources.
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PLS HELP SUPER easyyy!!!!!!!
Answers
Answer:
A foundation.
Explanation:
Balance can be considered a foundation for other physical skills because it is essential for performing many movements and activities effectively and efficiently. Having good balance helps individuals maintain stability and control over their body, which is important for actions like walking, running, jumping, and even standing still. Without good balance, individuals may struggle with coordination, experience falls or injuries, or have difficulty performing tasks that require precise movements. Therefore, developing and maintaining good balance can serve as a foundation for other physical skills and overall physical health.
a driver is going at 120km h and sees a barrier 60.0 m ahead it takes 5secounds to apply the brakes and decelerates at 12m does the driver hot the barrier
Answers
Answer:
yes, if you're going at 120 km and you saw the wall that late then it wouldn't me possible to decrease 12 meters in 5 seconds and not hit the wall that's only 60 meters away
Explanation:
two sturdy poles are positioned 7.5 m apart. a 0.35 kg cord is stretched between the poles. when one pole is struck by a hammer, a transverse wave travels down the cord and reaches the other pole in 0.78 s. what is the tension in the cord?
Answers
The tension in the cord is 4.318 N.
What is a tension?
In physics, tension is defined as the pulling force that is transmitted axially by a string, rope, chain, or similar object, or by each end of a rod, truss member, or other comparable three-dimensional object. Tension can also be defined as the action-reaction pair of forces acting at each end of the aforementioned elements. The polar opposite of compression might be tension. The International System of Units (SI) uses newtons to measure tension as a transmitted force, an action-reaction pair of forces, or a restoring force (or pounds-force in Imperial units).
V= distance/ time
7.5/0.78= 9.62 m/s
T= v^2 m/ l
= (9.62)2 0.35/ 7.5
= 32.39054/ 7.5
= 4.318N
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A 7 kg ball is push with a force of 28 What is the acceleration?
Answers
Answer:
a = 4 m/s²
Explanation:
Given: 28 N, 7 kg
To find: Acceleration (a)
Solution: To find (a), divide force by weight
A = F ÷ m
= 28 ÷ 7
= 4 m/s²
Newtons are derived units, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.
the human eye has an angular resolution of roughly 1 arcminute. which of the following objects are we not able to resolve, and uses the unit of arcminute correctly?
Answers
The human eye can detect objects that are 30 centimeters apart at a distance of 1 kilometer owing to its approximately 1 arcminute angular resolution.
The human eye has a maximum angular resolution of 28 arc seconds, or 0.47 arc minutes. As a result, at a distance of 1 kilometer, we are unable to resolve things smaller than 30 cm. The closer the object is placed; more distinguishable it appears to the eyes.
Angle resolution is one of the limits to which your eyes can see. Light rays that are reflected off or produced by things are visible to your eye. These light rays enter your pupil and are focused on your retina by your eye's lens. Depending on the angle at which the corresponding light beams from two items interact, your pupil size—which is comparable to the aperture of a camera—determines how well you can distinguish between two objects.
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Complete question:
the human eye has an angular resolution of roughly 1 arcminute. which of the following objects are we not able to resolve, and uses the unit of arcminute correctly?
Objects closer than 1 km
Objects away from the vision
Objects at a distance of 2 km
Objects just near to eyes
(HELP PLEASE)What are some reasons people produce synthetic materials?
Answers
Answer:
Explanation:
Synthetic fabrics, such as nylon and polyester, are produced entirely from chemicals. Natural fabrics, such as cotton, silk, and wool are made of fibres from plants and animals. Synthetic fabrics are useful because they have very different or enhanced (improved) properties in comparison to natural materials.
Consider a beam with length L which is embedded at its left end (x = 0) and free at its right end (x = L). If the load distribution on this beam is given by w(x) = W0 sin phi x/2L, find the deflection of the beam y(x). Express your results in a normalized form as yEl/ wLvs.x/L.
Answers
The normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].
The deflection of the beam can be determined using the following formula:
y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x], where
- EI is the flexural rigidity of the beam.
The normalized deflection is given as yEl/ wLvs.x/L. Therefore, substituting the given values of the load distribution and using the above formula,
the deflection of the beam is:y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x]
Normalized deflection, yEl/ wLvs.x/L = (W0 L2 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] / W0 L2/Lvs.x/LyEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x]
Therefore, the deflection of the beam is given as y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] and the normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].
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one afternoon, huyen and phong go outside after it stops raining. the sun comes out, and when they look up, they can see a rainbow. huyen knows that the different colors of light in the rainbow come from waves that have different wavelengths. if each color has a different wavelength, why are huyen and phong able to see all of the different colors at the same time?
Answers
Answer: The light waves result in colors that blend together
The blood exits the heart with high pressure and velocity. Briefly explain what happens to blood velocity and pressure as it progresses through the circulatory system.
Answers
Answer:
During systole, there is ventricular contraction which is when blood is expulsed with high pressure in the aorta. This means that the velocity of the blood flow is also high. During diastole, there is refilling of the blood following systole. Therefore, the pressure is maintained by recoil and is overall lower.
As blood exits the heart, it is ejected with high pressure and velocity due to the strong contraction of the heart muscles. However, as it progresses through the circulatory system, the blood velocity and pressure decrease gradually.
This is because the circulatory system comprises a network of blood vessels, including arteries, capillaries, and veins, each with different diameters and functions. As blood moves from the arteries to the capillaries, the diameter of the blood vessels decreases, leading to an increase in resistance to blood flow. This results in a decrease in blood velocity.
Moreover, the capillaries have very narrow diameters, and blood cells must pass through them one at a time. This causes a further decrease in blood velocity, allowing sufficient time for the exchange of gases, nutrients, and waste products between the blood and the surrounding tissues.
As the blood exits the capillaries and enters the veins, the diameter of the blood vessels increases, and the resistance to blood flow decreases. This leads to a gradual increase in blood velocity. However, the pressure in the veins remains low, and the blood flow is facilitated by the contraction of surrounding muscles and the one-way valves in the veins.
The circulatory system is designed to regulate blood velocity and pressure to ensure the efficient transport of oxygen and nutrients to the body's tissues while maintaining a constant blood supply to the vital organs.
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Calculate the weight of an object sitting on the Earth’s surface if the mass of the object is 50 kg? Assuming the force of gravity g = 9. 81 m/s²)
Answers
The weight of an object with a mass of 50 kg on Earth's surface is 490.5 N (Newtons).
To calculate the weight of an object on Earth's surface, we need to consider the mass of the object and the force of gravity (g). In this case, the mass is given as 50 kg, and the force of gravity is assumed to be 9.81 m/s².
Step-by-step explanation:
1. Start with the mass of the object (m) which is given as 50 kg.
2. Next, take the force of gravity (g) as 9.81 m/s² (as provided).
3. Now, we need to use the weight formula, which is:
Weight (W) = mass (m) × force of gravity (g)
4. Substitute the values of mass and force of gravity in the formula:
W = 50 kg × 9.81 m/s²
5. Perform the multiplication:
W = 490.5 N
So, the weight of the object sitting on Earth's surface with a mass of 50 kg is 490.5 Newtons.
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If you toss a ball straight upward at 40 m/s with no air resistance, what will be its speed 7 seconds later?
Answers
The speed of the ball seven seconds later is 28.6 m/s.
What is the speed of the ball?We have the following information;
initial velocity of the ball = 40 m/s
time taken = 7 seconds
Acceleration of the ball = 9.8 m/s^2
Now;
v = u - gt (the ball is moving upwards)
v = 40 - (9.8 * 7)
v = 28.6 m/s
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How do scientists decide which isotope to use, when dating a rock?
Answers
Answer:
Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that. ... Scientists can determine how long ago an organism died by measuring how much carbon-14 is left relative to the carbon-12.
Explanation:
Answer:
Through testing them on elements of different atomic number
Explanation:
why can iron filings be used to visualize a magnetic field?
Answers
Answer:
they will align themselves with a magnetic field
Explanation:
The resistance to the motion of an object is
Answers
Answer:
Inertia
Explanation:
Part of Newton's Laws of Motion
(240) What size overcurrent protection device is required for a 45 ampere continuous load? The circuit is in a raceway with 14 current carrying conductors.
Answers
For a 45A continuous load in a circuit with 14 current-carrying conductors, a 60A overcurrent protection device is required (NEC guidelines).
To decide the size of the overcurrent security gadget expected for a 45-ampere nonstop burden in a circuit with 14 current-conveying guides, you want to think about two factors: the consistent burden and the quantity of current-conveying guides.
According to NEC rules, for a nonstop burden, the overcurrent security gadget ought to be evaluated no less than 125% of the heap, which for this situation would be:
125% x 45 amps = 56.25 amps
Furthermore, for a circuit with multiple current-conveying guides, the ampacity of the guides should be changed by a derating factor. According to NEC Table 310.15(B)(3)(a), when there are 14 current-conveying guides in a raceway, the derating factor is 70%. Subsequently, the changed ampacity of the guides would be:
45 amps x 0.7 = 31.5 amps
Since the changed ampacity of the guides is not exactly the base required size of the overcurrent assurance gadget (56.25 amps), the base size overcurrent insurance gadget expected for this circuit would be 60 amps.
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