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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?
c). at what speed does it hit the ground? d). what total length of time is the ball in the air
A hollow METALLIC sphere has an inner radius A and an outer radius B. If charge is placed on the inner surface, that is at radius A, where is the charge located after it has c
A conductor moves with a velocity of 20m/s at an angle of (a) 90 ? (b) 45 ? (c) 30 ? , to a magnetic field produced among two square-faced poles of side length 2.5cm. If the
Which of the following material has the highest melting point (A) Copper. (B) Aluminium. (C) Tungsten. (D) Gold. Ans: Tungsten has the highest melting point.
Define the Cylinders and Heat Bath? Regard as a cylinder 1 m long with a thin, massless piston clamped in such a manner that it divides the cylinder into two equal parts. The
State the Working of UJT Make circuit arrangement as demonstrated in fig.(c), where UJT is represented by its equivalent circuit comprising resistances R B1
Le Chatelier's principle (H. Le Chatelier; 1888) If a system is in equilibrium, then any change imposed onto the system tends to shift the equilibrium to decrease the effect of
Determine the zero-point energy of a harmonic oscillator havingof a particle of mass 2.33 x 10 -26 kg and force constant 155 N m -1 .
Q. Illustrate what is moment of inertia? Answer:- Moment of inertia is the term utilized to measure or quantifies the amount of mass located at an object's extremities. Fo
Where do you find the null points in the combined field due to the earth and a bar magnet, when i) the N-pole of the magnet is taken towards the north of the earth, ii) the
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