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A sperical source ratiates sound uniformly in all directions. At a distance of 18m, the sound intensity level is 100dB.
a) At what distance from the source is the intensity level 60 dB?
b) what power is radiated by this source?
1. How much charge has been transferred from the negative to the positive terminal? Express your answer using two significant figures. 2.How much work has been done on the charges that passed through the battery? Express your answer using two sign..
50-g of hot water at 65 degree C is poured into a cavity in a very large block of ice at 0 degrees C, What is the mass of the ice that melts
The number of turns in the primary and the secondary of a step-up transformer are 93 and 439 respectively. what is the output voltage of this transformer
The plates of a parallel-plate capacitor have a separation of 4.04mm , and each has an area of 15.4cm2 . Each plate carries a charge of magnitude 6.65×10?8C, What is the potential difference between the plates
A bartender slides a beer mug at 1.30 m/s towards a customer at the end of a frictionless bar that is 2.0m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of the bar.
With two fingers, you hold an ice cream cone motionless upside down the mass of the cone is m, and the coefficient of static friction between your fingers and the cone is? When viewed from the side, the angle of the tip is 2?
Find a largest image that can be completely imaged on a 35mm film.
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
A spring-mass system has a natural frequency given by w=sqrt(k/m) km, Determine natural frequency, w in units of rad/sec and Hz
A person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.40 and moment of inertia 950. The platform rotates without friction with the angular velocity 0.95. The person walks radially to the edge of the platform.
The system shown below has frictionless pulleys and the string have negligible mass. what is the speed of the objects when they are at the same height
Density-Gravity Problem: a) Planet Vulcan has twice the mass of Earth and the same radius. What are its volume, density and surface gravity compared to Earth?
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