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Question: Air at a temperature of 45°C flows in a supersonic wind tunnel over a very narrow wedge. A shadowgraph photograph of the flow reveals weak waves emanating from the front of the wedge at an angle of 35° to the undisturbed flow. Find the Mach number and velocity in the flow approaching the wedge.
Calculate the normal force exerted by the floor on the ladder - Find the force on the support A when a 65 kg diver stands at the end of the div¬ing board. The acceleration of gravity is 9.81 m/s2
What is the tangential acceleration of a bug on the rim of a6.0 in. diameter disk if the disk moves from rest to an angular speed of 77 rev/min in 4.0s? When the disk is at its final speed, what is the tangential velocity of the bug? What is its cent..
A dish of hot food has an emissivity of 0.48 and emits 15 W of thermal radiation. how much power will it radiate
A string 2.0 m long has a mass of 2.4 x 10-2 kg. When fixed at both ends, it vibrates with a fundamental frequency 150 Hz. What is the speed of the wave on this wire? What is the frequency of its third harmonic?
A 11.0 resistor, 10.0 mH inductor, and a 90.0 µF capacitor are connected in series to a 55.0 V (rms) source having variable frequency. Find the energy delivered to the circuit during one period if the operating frequency is twice the resonance freque..
Problem: A state representative wants to know how voters in his district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants, as well as several other current statewide issues. He mails a quest..
A swimmer, capable of swimming at a speed of 1.42 m/s in still water (i.e., the swimmer can swim with a speed of 1.42 m/s relative to the water), How long does it take the swimmer to cross the river
Two masses of 5.0 kilogram and 10 kilogram are connected by a compressed spring and rest on a frictionless table. find what are the speeds of the two masses
A mass m = 14 kg rests on a frictionless table and accelerated by a spring with spring constant k = 5209 N/m. The floor is frictionless except for a rough patch, What is the length of the rough spot
Two particles with masses 2m and 5m are moving toward each other along the x axis with the same initial speed, Find the final speeds of the two particles after the collision
An 830 kilogram race car can drive around an unbanked turn at a maximum speed of 58 m/s without slipping. Obtain what would be the maximum speed if no down force acted on the car
A potter's wheel having a radius 0.450m and a moment of inertia 15 kg•m2 is rotating freely at 45 rev/min. The potter can stop the wheel in 7.50 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N.
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