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Q. A pair of speakers separated by 0.7 m is driven by the same oscillator at a frequency of 674Hz. An observer, first positioned at one of the speakers, begins to walk along a line perpendicular to the line joining the speakers. (Assume the speed of sound is 345 m/s.) How far should the observer walk before reaching a relative maximum in intensity?
When these two wires are connected in equivalent to the same battery, describe the reasoning of the steps that allow you to find out which of these wires will consume the greater amount of power by warming up and dissipating this energy as heat.
A 0.525 kg ball starts from rest and rolls down the hill with uniform acceleration, travelling 150 m throughout the second 10.0 rm s of its motion.
What are the first, second, and third frequencies audible from a 20cm long organ pipe when (1) only one end is open and when (2) both ends are open. The speed of sound through the air inside the organ pipe is 343 m/s. (Hint: if a harmonic does not..
What power is dissipated in a single light. A proton is fixed in place. An electron is released from rest and allowed to collide with the proton. Then the roles of the proton and electron are interchanged, and same experiment is repeated. Which is ..
What is the kinetic energy of a 1,500 kg car with velocity of 72.0 km/hr? How much work must be done on the car to bring it to a complete stop.
Objective questions based on kinematics.
A train is traveling up a 3.3 incline at a speed of 3 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? How far did the last car travel before momentarily coming..
A hiker walks 3.50 km at an angle of 45.0 degrees north of west. After that the hiker walks 1.5 km south. What is the magnitude and direction of hiker's totally displacement.
A 0.5 kg block of ice is sliding by you on a very slippery floor at 2.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0025 seconds.
The springs of a 1600 kg car compress 5.0 mm when its 65 kg driver gets into the driver's seat. If the car goes over a bump, what would be frequency of vibrations.
A wire loop of radius 0.3 m lies so that an external magnetic field of magnitude 0.30T is perpendicular to the loop. The filed reverses its direction, and its magnitude changes to 0.20T in 1.5s. Find out the magnitude of the average induced emf in..
If the balls are released from a height where the bottom of the basketball is at 0.781m above the ground, what is the absolute value of basketball's momentum just before it hits the ground.
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