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The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. The sound level of this creature has been measured as high as 100 dB. (a) Calculate the intensity of the sound wave emitted. W/m2 (b) What is the intensity level if ten thousand of these toadfish try to make a sound at the same time? dB
A 0.450-kg ball is dropped from rest at a point 1.30-m above floor. The ball rebounds straight upward to a height of 0.700-m. What are the magnitude and direction of the impulse of the net force applied to the ball throughout the collision with th..
If it starts 4.70m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 21.0N
A chamber with a fixed volume of 1.0 m3 contains a monatomic gas at 3.00 102 K. The chamber is heated to a temperature of 5.00 102 K. How many gas molecules are in the chamber
A common flashlight bulb is rated at 0.202 A and 3.82 V (the values of current and voltage under operating conditions, estimate the temperature of the tungsten filament when the bulb is turned on
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
A model airplane of mass 0.870 kg is flying at constant speed in a horizontal circle at one end of a 28.0 m cord and at a height of 17.0 m. What is the acceleration of the plane
Two antennas radiating 6.0 MHz radio waves in phase with each other. They are located at points S1 ( at the origin x=0) and S2 ( at x=175 m). What are the first three points on the y axis
Two slits with a separation of 8.5 x 10-5 cm create an interference pattern on the screen 2.3 m away. what is the wavelength of the light used
A particle is described by the wave function Ψ(x) ={ Axe^-ax, x>0 and Ψ(x) ={ 0, x≤0, Find the most probable position of the particle
You're carrying a 3.2-m-long, 25 pole to construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force must you exert to keep the pole motionl..
A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend spins the front wheel, of radius 0.386 m, and observes that drops of water fly off tangentially in an upward direction, find the magnitude of the averag..
The electric field of a sinusoidal electromagnetic wave obeys the equation , find the amplitude of the electric field of this wave
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