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Two trains on separate tracks move toward one another. Train 1has a speed of 140 km/h, train 2 speed of 55.0 km/h. Train 2 blows it shorn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Assume the speed of sound is 345m/s.)
A wave is a disturbance which transmits power and momentum from one place to the other without the transport of matter.
An electron in the hydrogen atom loses 3.02 eV as it falls to energy level E 2 . From which energy level did the atom fall?
Aiming Above the Monkey Assume a zookeeper must shoot a banana from banana cannon to a monkey who hangs from the limb of a tree. This particular monkey has a habit of dropping
Stokes' Formula: When a spherical object falls by the fluid, layer in immediate touch with it, sticks to it and goes along with the object with the same speed. The layer next to i
Action and reaction with a roller skate Place a roller skate on a smooth floor. Step on the roller skate with one foot and take a step forward with the other. Observe that the
The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path wh
Write down the differential equation for a simple harmonic oscillator subjected to a damping force proportional to the velocity (v) of the oscillator and the periodic force of angu
Motion of an object in a straight line is called one dimensional motion. The location of a particle in one dimensional motion can be explained by only one variable (say x). For a p
initial position time the vibration mean time time period of the bob t time
What is the effect of torque and equilibrium on taps,doors,handlebars and bicycles?
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