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A firework rocket explodes at an altitude of 400m causing an average sound intensity of 6.7 x 10^{^-2} W/m^{2} at a point on the ground directly below it. What is the average intensity of the sound at the distance 10m from the rocket?
a battery-powered global positioning system gps receiver operating on 9.0 v draws a current of 0.13 a. how much
Two spheres are launched horizontally from a 1.2 -high table. Sphere is launched with an initial speed of 4.5. What is the time for the sphere to hit the floor
two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.90 m long conducting wire.
A large turntable rotates about a fixed vertical axis, making one revolution in 6.00 s. What is the angular speed of the turntable
a baseball is thrown directly upward at time and is caught again at time . assume that airresistance is so small that
parachutist with a camera, both descending at a speed of 13 m/s, releases that camera at an altitude of 110-m.
A tow truck pulls a car 5.00 kilogram along a horizontal roadway using a cable having tension of 859 Newton. Determine how much work does the cable do on the car if it pulls horizontally
A cube of ice is taken from the freezer at -8.4 and placed in a 104 aluminium calorimeter filled with 322 of water at room temperature of 20. The final situation is observed to be all water at 17.
A generator is designed to produce a maximum emf of140 V while rotating with an angularspeed of 3600 rpm. how many turns of wire are needed
a 26.0 kg hammer strikes a steel spike 2.40 cm in diameter while moving with speed of 20.0 ms. the hammer rebounds with
Consider a simple RC circuit (a power supply, capacitor andresistor) in series. If you add a parallel branch, to the R and C,that only contains another resistor, what happens to the time constant?
the resistance of a very fine tungsten wire with a 10 micro m x 10micro m square cross section is 2978 ohm how long is
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