You sit in the center of a room that includes an amazing surround-sound system, consisting of 10 speakers (all of which are equidistant from your ears). You play a tone from all 10 speakers at once, but they have randomly-distributed relative phases, so you hear the same volume as if you turned up the power coming through a single speaker by a factor of 10. From this arrangement you hear the tone at an intensity level of 35 dB. Next you reconfigure the speakers so that they play the tones in phase. If the volume of each speaker is the same as before, what is the decibel level of this new sound?

Q: A 1260-kg car starts from rest at the bottom of a driveway and has a speed of 3.00 m/s at a point…

A: given -          mass of car = 1260 kg          initial velocity of car = 0 m/s          velocity of…

Q: A circular swimming pool has a diameter of 9ft and the sides are 4ft high, and the depth of the…

A:

Q: It is friction that provides the force for a car to accelerate, so for high-performance cars the…

A: initial velocity (u)  = 0 ms= 0 mph final velocity (v) = 50 mph

Q: 4. Two side-by-side (virtually no separation) speakers are wired such that they emit a…

A:

Q: 2. A 45.0 kg boy is initially seated on the top of a hemispherical ice mound of radius 20.0 m. He…

A: Given that, A boy starts sliding from the top of the hemisphere. the mass of the boy is m=45kg and…

Q: (2x²yzi+xyzj - 4xyzk), where x, y, and z are in Force with equality meters. Work on a particle of…

A: Velocity: The primary indicator of an object's position and speed is its velocity. It is the…

Q: Consider the circuit shown in the figure below. (Assume R₁ = 14.0 2 and R₂ = 3.00 12.) b 25.0 V + R₁…

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Q: Find the degree of the resultant force (F.) and the missing force using the law of sin. 2) 70N 3) 5)…

A: Given,

Q: A sailboat moving in the direction shown is tacking to windward against a north wind. The log…

A: Speed of the boat, vb=5.1 knots The angle made by the apparent wind velocity with respect to the…

Q: A car is accelerated from velocity v₁ to v2 in the time period of t. The mass of the car is m. The…

A: Given data: Inclined angle = α The distance traveled along the hill = L Vertical distance travelled…

Q: What potential difference must be applied across a 2.5-k2 resistor in order to produce a current of…

A:

Q: 5. A block of weight w = 100 N is suspended from a rope tied to two other ropes at point O. One rope…

A:

Q: se that 0.95 g of steam (aka gaseous water), initially at 100 °C, condenses on a 75.0 g block of…

A: we have to determine the equilibrium temperature for the system where 0.95 gra steam is condensing…

Q: (b) Static friction Early next semester, you decide to go for a sled ride with your Physics lab…

A: Note:- “Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: A 86 g red superball traveling 17 m/s EAST has an elastic collision with a 47 g blue superball…

A:

Q: Find the current in a circuit that has a 12 V battery and a 130 2 resistor.

A: Given data:  Battery voltage (V) = 12 V Resistance (R) = 130 Ω Required: The current (I)

Q: String is wrapped around the outer rim of a solid uniform cylinder that is free to rotate about a…

A:

Q: runk? Explain your reasoning. 2. A 4.0 kg block of wood sits on a table (Figure 5). A string is tied…

A: Part (2): Given: The hanging mass of the object is 1.8 kg. The mass on the table is 4 kg.

Q: Aliyah is solving a physics problem involving an elevator. She draws the (unlabeled) force diagram…

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Q: The position of a particle as a function of time is given by: F(t) = (8t + 6t³)i + (10-2t²)ĵ where r…

A:

Q: A 0.170 kg hockey puck is initially moving at 21.2 m/s [W] along the ice. The coefficient of kinetic…

A: Mass of hockey puck(m) =0.17 Kg Normal force acting on puck due to ice(N) =mg=0.17*9.8=1.666 Initial…

Q: A concave lens has a focal length of -3 cm. A candle with a height of 10 cm is 28 cm away from the…

A: Given: focal length f = -3 cm            object distance u = -28 cm            height of the object…

Q: Assuming that the radius of the circular path of the electron is 4.9cm when voltage is 100v and coil…

A: Given: The voltage applied in the coil is V = 100 V The mass of the electron is m = 9.1 x 10-31 kg…

Q: 5) Let y = -3 sin(4x - π)-1. a) What is the amplitude? b) What is the period? c) Has it been…

A: Write the given equation. y=−3sin(4x−π)−1y=−3sin[4(x−π4)]−1 Write the standard equation of motion.…

Q: A block weights 150g and it’s attached to a 0.6m long string. The block starts from rest and begins…

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Q: Problem 7 Yo-yo Consider a yo-yo of mass m and radius R, and treat it as a solid disk. The string is…

A: a) Since string is not slipping on the yo-yo, the net acceleration at point P will be zero. So,…

Q: Calculate the force and moment reactions at the bolted base O of the overhead traffice-signal…

A:

Q: A car is accelerated from velocity v₁ to v2 in the time period of t. The mass of the car is m. The…

A: Write the given data.

Q: An electron in a hydrogen atom has orbital angular momentum quantum number = 6. What is the smallest…

A: The spin quantum number of an electron is 0.5. Calculate the smallest total angular momentum quantum…

Q: Three blocks are connected by light ropes as shown. There is no friction in the problem (from the…

A: Draw the free-body diagram of the 4 kg block. Apply Newton’s second law in the vertical direction…

Q: when is a person ready to lead?

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Q: Three forces act on a moving object. One force has a magnitude of 75.0 N and is directed due north.…

A:

Q: Some children standing on top of a cliff 500 m high dropped a large stone from rest. a. How long was…

A:

Q: In the rectilinear motion experiment, as you increase the height of the plane, what happens to the…

A: The Rectilinear motion is the motion, that particle restricted to moves in linear or straight line.…

Q: A 0.13 kg block on a horizontal frictionless surface is attached to a spring whose force constant is…

A: Given: Mass of the block (m) = 0.13 kg force constant (K)= 300 N/m displacement from equilibrium…

Q: A sinusoidal wave travels along a string with a linear mass density of μ = 0.65 kg/m. The magnitude…

A: Given data, Linear mass density (μ)=0.65 kg/m Maximum vertical acceleration (aymax) = 0.090 cm/s2…

Q: You are asked to design a runway for a plane that takes off at 100 m/s and can accelerate a maximum…

A: Given data:  Initial velocity (u) = 0 m/s Final velocity (v) = 100 m/s Acceleration (a) = 2.00 m/s2…

Q: 4. An electric motor is used to pull a 125 kg box across a floor using a long cable. The Fi tension…

A:

Q: The instantaneous velocity of an object can be determined by dividing the net force on the object by…

A:

Q: You are participating in a three-way pulling game. Red lines show competitors force vectors. 560 N…

A: Given F1 = 560 N,  53° above the horizontal from +x axis F2 = 400 N, 45° below the horizontal from…

Q: concave lens has a focal length of -7 cm. A candle with a height of 5 cm is 25 cm away from the…

A:

Q: 2) If at this instance he has a speed of 6.5 m/s, which is increasing at 0.4 m/s², determine the…

A: The centripetal acceleration is given by: v2r (6.5)210 = 42.2510 = 4.225       However since the…

Q: A 0.800-mm-diameter silver wire carries a 30.0 mA current. ▼ Part A What is the electric field in…

A: diameter of silver wire = 0.8 mm current = 30 mA

Q: A spring has a natural length of 20cm. A 40N force is required to stretch (and hold the spring) to a…

A: Given data: Natural length of the spring, x0=20 cm=20×10-2 m New length of the spring, x1=30…

Q: Since raindrops grow as they fall, their surface area fore the resistance to their falling…

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Q: Suppose you have a 115-kg wooden crate resting on a wood floor. (?k = 0.3 and ?s = 0.5) (a) What…

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Q: The internuclear distance (bond length) of carbon monoxide molecule is 1.13 Å. Calculate the energy…

A: Given: The bond length of carbon monoxide is r = 1.13 × 10-10 m The atomic mass of the carbon atom…

Q: A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the…

A: weight of the ball (w) = - 5.7 N bouyant force (FB) = 9.5 N Let the external force = F

Q: Which picture (A, B, or C) would best show the student listening to a high-pitched sound? Explain…

A: pitch of a wave depends on frequency. high pitched wave has high frequency . that is number waves is…

Q: Consider an object of mass m in a circular orbit of radius r and angular velocity w about a larger…

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Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.