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A commuter train blows its horn as it passes a passenger platform at a constant speed of 40.0m/s. The train horn sounds at a frequency of 305 Hz when the train is at rest.
(a) What is the frequency observed by a person on the platform as the train approaches? (b) What is the frequency observed by a person on the platform as the train recedes from him? (c) What wavelength does the observer find in each case?
Beryllium copper alloy: It is obtained by alloying copper and beryllium. These alloys containing beryllium up to 2.75% can be produced in the form of sheet, rod, wire and tube. Be
Q. What would occur if a disk one light second in circumference were to spin at 60 RPM? Answer:- 60 revolutions for each minute is one revolution per second. 1 light se
The weightless simply supported beam below has a VDL of P61kN/m, a point load of P62 kN and a UDL of P63 kN/m as shown. Determine the vertical reaction force at A the maximum bend
Example of like and unlike parallel forces
A device which changes light energy into electrical energy is known as photoelectric cell. It is also known as photocell or electric eye.
Write down the electromagnetic wave equation in free space, in terms of vector and scalar potential.
A block is considered on a rough horizontal surface. If we give a variable force F on the block and if we enhance the force F continuously then we seem that block remains stationar
A resistor of 8Ω is connected in parallel with one of 12Ω and the combination is connected in series with one of 4Ω. A p.d. of 10V is applied to the circuit. The 8Ω resistor
A person is tasked with creating a ray diagram to conclude the characteristics of the image of an object formed by a concave lens. The person has accurately drawn the principal axi
In a single slit diffraction pattern the distance between the first minimum on left to first minimum on the right is 0.054 cm for a light of wavelength 5890 Å. Determine
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