As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 50.0 Hz. After the car goes by, you hear a frequency of 40.0 Hz. What is the speed of the car? The speed of sound in the air is 343 m/s. O29.1 m/s O 25.0 m/s 47.1 m/s 38.1 m/s O 16.0 m/s

Q: A skater is trying to perform a jump. her vertical take-off speed is 1.7 m/s. How high is her jump?…

A: given -              vertical take off speed ( u ) = 1.7 m/s = initial speed…

Q: Jackie has a car that accelerates at 8.5 m/s2. If the car has a mass of 2300 kg, how much force does…

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Q: ia moves a 400-gram box by applying a force of 2.5 N. What is the coefficient of friction?

A: The force which just moves the box is equal to the frictional force. The fore makes the box move…

Q: To lift a patient, four nurses grip the sheet on which the patient is lying and lift upward. If each…

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Q: Mary applies a force of 70 N to push a box with an acceleration of 0.60 m/s2. When she increases the…

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Q: A 300kg weight is held aloft by a rope that passes over a pulley and is then tied down. A 100 kg…

A:

Q: While an elevator of mass 812 kg moves downward, the tension in the supporting cable is a constant…

A:

Q: Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts…

A: Given m=4.36kg, M=5.77kg. Let a be the acceleration of the system. From the FBD of mass m, T - mg=-…

Q: A person traveling in a 2,000 kg car at a constant speed of 40.0 m/s applies the brakes, causing a…

A: Given:Mass of the car = 2,000 kgInitial speed of the car = 40 m/sFinal speed of the car = 0Force…

Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

A: Given,  A wooden block sliding over a table with frictional force f. And another block having same…

Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

A:

Q: A 65.0-kg file cabinet is sliding down a rough ramp for a distance of 5.00 m from rest as shown. The…

A: The mass of the cabinet is The displacement of the cabinet along the ramp is The frictional force on…

Q: A force of 40 N stretches a spring 150 cm. What is the spring constant?

A: The force applied to the spring stretches it by distance x than the amount of force is given by,…

Q: A 2kg block starts from rest at the top of a 30 degree incline and slides a distance of 2m down the…

A:

Q: A force of 61 N causes a rock to accelerate at a rate of 4 m/s2. What is the mass?

A: Write the given values of the problem- Force(F) F=16 N Acceleration(a) a=4ms2

Q: A block with a mass of 4.0 kg is being pulled across a tabletop by a force of 15 N. The table exerts…

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Q: A runner starts at 0m/s and after 5 seconds is running at 10m/s. What is the net force that the…

A: Newton's second Law of motion: It states that acceleration on an object is the result of net force…

Q: Determine the acceleration of the cable drawn into the motor to make the load B attain a speed of 8…

A: Given, Speed at load, vB=8m/s Time, t=3s Length of string 1, SB+2SB-SC=l13SB-2SC=l1 Time derivative…

Q: An object with a mass of 4kg lies on a rough plane inclined at 20 degrees to horizontal. A force of…

A: mass =4 kg  angle = 20oF = 35 N a = 2.5 m/s2

Q: Solve this question in detail. Solution must be in Handwritten format only. Include free body…

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Q: A 10-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley…

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Q: Part C What is the magnitude of the acceleration? Express your answer in meters per second squared.…

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Q: 3. A skier of mass m starts from rest at the top of a frictionless, snow covered hill angled at 0…

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Q: A runaway train car that has a mass of 1.68e+4 kg travels at a speed of 7.60 m/s down a track.…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

A:

Q: The cart in the figure is attached to special spring that can stretch and compress equally well. The…

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Q: A dockworker applies a constant horizontal force of 75.0 N to a block of ice on a smooth horizontal…

A: The applied constant force, Fapp=75 N The initial velocity of the block of ice, u=0 m/s The distance…

Q: Answer both please

A:

Q: A 10 kg object starts from rest and achieves a speed of 20 m/s in 10 s. How much force (in N) acted…

A: Mass of the object m=10 kg The initial speed of the object u =0 m/s The final speed of the object v=…

Q: A block is placed on a frictionless 30 degree incline.the mass of the block is m=30kg. b.find the…

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Q: You push a grocery cart with a force of 30 N and it accelerates at 2 m/sec2. What is the carts mass

A: Force , F = 30 N Acceleration , a = 2 m/s2 . To find = Mass

Q: A 41.0-kg child swings in a swing supported by two chains, each 3.04 m long. The tension in each…

A: (a) the net force on the lowest point is given by,mac=2T-mg ......(1)where, m=mass of the…

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.