The speed of sound waves through two different media, steel and air, was recorded. According to the graph, sound waves travel. A) through steel, but not through air
B) faster through steel than through air
C) faster through air than through steel
D) through steel and air at similar speeds
Answers
Answer: The correct answer is Option B.
Explanation:
Sound waves are a type of longitudinal waves. These waves are the waves in which particles of the medium travel in the direction of the wave. These waves require a medium to travel.
Sound waves travel faster in solids than in the gaseous medium because the particles in solid state lie close to each other and the vibrations of the sound waves travel faster when the particles lie closer to each other.
Hence, the correct answer is Option B.
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How many times more intense is an earthquake that measures 7.5 on the Richter scale than one that measures 6.7? (Recall that the Richter scale defines magnitude of an earthquake with the equation M=log i/s , where i is the intensity of the earthquake being measured, and S is the intensity of a standard earthquake
Three friends tie three ropes in a knot and pull on the ropes in different directions. Adrienne (rope 1) exerts a 20-N force in the positive x-direction, and Jim (rope 2) exerts a 40-N force at an angle 53∘ above the negative x-axis. Luis (rope 3) exerts a force that balances the first two so that the knot does not move.a. Use equilibrium conditions to find F LonKx and F LonKy. b. Use equilibrium conditions to determine the magnitude of F⃗ LonK. c. Use equilibrium conditions to determine the angle θ that describes the direction of F⃗ LonK. Use positive values if the force is directed above the positive x-axis and negative values if it is directed below the positive x-axis.d. Construct a force diagram for the knot.
The frequency of a purple photon is 7.14×10^14 Hz. Which equation should be used to solve for the wavelength of the photon?
Sarah throws a ball directly upward at the edge of a cliff with a starting velocity of 3.0 m/sIt lands on the ground with a final speed of 6.0 m/sHow long is the ball in the air?Round the answer to two significant digits
condensation
convection
collaboration
Answers
Answer is C. Convection
Answers
Answer:
ammeter goes in series and a voltmeter goes in parallel
Explanation:
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The material that would absorb the most sound is Heavy curtains (Option A)
What material absorbs the most sound?
The effectiveness of a material in absorbing sound is typically measured by its coefficient of absorption.
The coefficient of absorption ranges from;
- 0 (perfectly reflective, no sound absorption) to
- 1 (perfectly absorptive, all sound is absorbed)
Based on the coefficient of absorption for each material listed, the best choice for sound absorption would be Heavy curtains.
Heavy curtains are often designed with sound-absorbing properties, and they can have a coefficient of absorption higher than other materials like wood, concrete, or carpet.
The ranking of the absorption of the materials are;
Heavy curtains (0.5) > Carpet (0.2) > Wood (0.05) > Concrete (0.02)
Learn more about sound absorption here: brainly.com/question/16297116
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Coefficients of Absorption for Common Materials
(from Penn Foster) ⭐⭐⭐⭐⭐
Material Coefficient of Absorption
Perforated acoustic ceiling material 60%
Heavy curtains (A) 50%
Carpeting (D) 20%
Wood (B) 5%
Plaster 3%
Clay tile 3%
Concrete (C) 2%
The answer is A. Heavy curtains ✅
(1) 1.5 × 10^−15 Hz (3) 1.4 × 10^2 Hz
(2) 4.5 × 10^−7 Hz (4) 6.7 × 10^14 Hz
Answers
Wavelength formula is C=λf or λ=C/f or f = C/λ, so Frequency = Velocity divided by wavelength, where C is the velocity, which is the speed of light: 3.00×108 m/sec
λ is the wavelength in meters
f is the frequency in Hertz (cycles per second)
f=3.00×108msec/4.5x10−7m=6.7x1014Hz
Answers
TRUE
Answer:
False
Explanation:
Answers
The pellets in a shotshell start to spread or scatter as soon as they are fired. This dispersion will increase as the pellets travel farther. Shotgun barrels feature a choke to regulate this pellet pattern. The shotgun barrel's choke is the constriction at the muzzle end.
How long is a shot string?
At 20 yards, it can be roughly 5 feet long, and at 30 yards, it can be 8 feet long. The variance is brought on by the pellets' distortion as they move along the barrel.
The full choke features the tightest shot pattern and is the tightest choke. The pellets are kept together for a longer distance thanks to this choke. It is typically used for shots that are further than 40 yards.
To learn more about barrels refer to:
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