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A truck horn emits a sound with a frequency of 246 Hz. The truck is moving on a straight road with a constant speed. If a person standing on the side of the road hears the horn at a frequency of 270 Hz, then what is the speed of the truck? Use 340 m/s for the speed of the sound.
(in m/s)
A sound wave with an intensity level of 80.9 dB is incident on an eardrum of area 6.00 10-5 m2. How much energy is absorbed by the eardrum in 3.0 minutes
A car travels at a constant velocity 30im/s for 20km, then it travels at 40im/s for the next 20km and, finally at 0im/s for the last 20km. Find the Average velocity and speed for the entire trip.
The water in a tank is at a gauge pressure of 259,145 Pa. If the bottom of the tank that has an area of 0.5 m2
An automobile starter motor has an equivalent resistance of 0.0480 and is supplied by a 12.0 V battery with a 0.0080 internal resistance. What power is supplied to the motor
The wavelength associated with the cut-off frequency for silver is 325 nm. Find the maximum kintetic energy of electrons
The current in a coil changes from 3.1 A to 1.9 A in 0.53 s. If the average emf induced in the coil is 15 mV, what is the self-inductance of the coil
A reading on a Geiger counter of 0.23 mrad/h is based on assuming that the measured radiation is due to cesium-137, How many ?-rays does the person's body absorb every second
q1. the lines in a grating are uniformly spaced at 1520nm. analyse the angular separation of the second order bright
A volume of 2000 cm^3 of carbon dioxide gas at normal pressure and 20 C is compressed isothermally into a 2 cm^3 container, what is the final pressure inside the container
A jet plane passes over you at a height of 4990 m and a speed of Mach 1.75. Find the Mach cone angle
One end of a metal rod is in contact with a thermal reservoir at 691 K, and the other end is in contact with a thermal reservoir at 105 K. what is the change in entropy of the rod
A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.590 T over a region of radius 1.40 m, What is the cyclotron frequency
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