A sound pulse emitted underwater reflects off a school of fish and is detected at the same place  0.21 s  later (see the figure below). How far away are the fish? (Assume the water temperature is 20°C.)   m?

Q: A new record for running the stairs of the Empire State Building was set on February 3, 2003. The 86…

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Q: A car mass of 1200 kg accelerates up a road with a slope of 1 in 10, increasing its speed from 6 m/s…

A: Here, θ = tan-1(1/10) = 5.71o m = 1200 kg Frictional force , f = 1500 N d = 110 m Using third…

Q: 1. A tow rope, parallel to the water, pulls a water skier directly behind the boat with constant…

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Q: What is the final velocity of a car originally traveling at 50.0 km/h that decelerates at a rate of…

A: Givenu=50 km/hr     or    13.89 m/sa=-0.400 m/s2t=50 si will use v=u+at

Q: What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 60…

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Q: A radio broadcast antenna is located at the top of a steep tall mountain. The antenna is…

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Q: Page 128 Practice Problem 5.6: At what angle does the hill slope if the acceleration is g/2? Answer:…

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Q: A 800 kg cart is rolling to the right at 1.10 m/s. A kg man is standing on the right end of the 70.0…

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Q: A rocket-powered hockey puck has a thrust of 4.30 N and a total mass of 1.00 kg. It is released from…

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Q: To get out of the harbor, a container ship sails at a bearing of 240° for 6 km before changing…

A: In this problem we will treat the two displacements as vectors.  resolve them into their respective…

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Q: A 4.00-kg mass and a 9.00-kg mass are being held at rest against a compressed spring on a…

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Q: The bob of a simple pendulum has a maximum speed of v_max = 2 m/s. What would be the bob's speed…

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Q: Find the pressure difference required between the ends of a 2.00 m long, 1.00 mm diameter horizontal…

A: Given data: Length of the tube, L=2m Diameter of the tube, D=1 mm. So, the radius of the tube,…

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A: The given data we have: Mass of the sleds: 18.7kg Mass of the cat: 2.39kg Speed at which the jumps…

Q: 4) You are on a deep sea dive. Your diver's barometer shows you at a water pressure of 285 psig at…

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Q: Nitrogen gas under an initial pressure of 5.0×106 Pa at 15 °C is contained in a cylinder of volume…

A: Given : Initial pressure = P1 = 5×106 pa Volume of cylinder = V1 = 0.04 m3  Initial temperature = T1…

Q: You push with 96 N on an 20 kg box and there is a 41 N force of friction.  What is the acceleration,…

A: Given data:  Applied force (F) = 96 N Mass (m) = 20 kg Friction force (f) = 41 N Required: The…

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Q: What direction does the Normal force act? Perpendicular to the surface pointing toward the surface…

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Q: 6) A large centrifuge, like the one shown below is used to expose aspiring astronauts to…

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Q: Is the undoped semiconductor's Hall constant positive, negative, or zero? Justify.

A: When a material carrying an electric current is placed in a magnetic field that is perpendicular to…

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Q: 1. A 51-kg packing crate is pulled with constant speed across a rough floor with a rope at an angle…

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Q: A grandfather clock is powered by the descent of a 4.35 kg weight.(a) If the weight descends through…

A: power = mgh / t = 4.35 * 9.8 * 0.76 / ( 3.25 *24*60*60 )

Q: What is the RMS speed of Helium atoms when the temperature of the Helium gas is 312.0 K? (Possibly…

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Q: Consider the objects labeled A, B, C, and D shown in the figure. C *1—Ï B D Each object is composed…

A: Given:  Mass of each stick, m = 8.11 kg Length of each stick, L = 0.241 m   To Find:  The moment of…

Q: (Scale: 1 cm = 50 4. An ambitious hiker walks 25 km North and 30 km East in a day. Find the hiker's…

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Q: 1. Initially sliding with a speed of 2.2 m/s, a 1.8-kg block collides with a spring and compresses…

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Q: The table shows two isotopes of potassium and two isotopes of calcium. 39K 42K Stable B-decay…

A: GivenMass of electron (me) = 0.000549 uMass of proton (me) = 0.000549 uMass of neutron (me) =…

Q: A simple series circuit consists of a 160 2 resistor, a 28.0 V battery, a switch, and a 3.20 pF…

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Q: 11.23 Blood pressure is generally quoted in mmHg and is a gauge pressure. In this question we will…

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Q: The two blocks shown in Figure 8–31 are moving with an initial speed v.If the system is…

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Q: An 8.0-cm radius disk with a moment of inertia of 0.12 kg-m² is free to rotate on a horizontal axis.…

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Q: Two objects of the same mass move along the same line in opposite directions. The first mass is…

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Q: 4. (a 5) Power stations are normally far away from the customers. A transformer is often used to…

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Q: The wave function of a sinusoidal wave generated in a string is given by: y(x,t) = 0.2 sin (2nx +…

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Q: A ball is thrown horizontally at a velocity of 4.0 m/s. a) What is its final velocity after 0.75…

A: Given, A ball is thrown horizontally. The initial velocity (in the horizontal direction) of the ball…

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Q: uppose two identical objects are sitting 1 meter apart. The gravitational force between them is 9N.…

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Q: As the summer intern for a company that manufactures nozzles for garden hoses, you are working on an…

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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.