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A source emits sound uniformly in all directions. A radialline is drawn from this source. On this line, determine the radialpositions of two points, 1.28 m apart, such that the intensitylevel at one point is 2.46 dB greater than that at the other. (a) What is the smaller radial position (in m)?(b) What is the larger radial position (inm)?
A 1.95 kg mass attached to a spring oscillates with a period of 0.390 s and an amplitude of 17.0 cm. Find the total mechanical energy of the system
A spring with spring constant k is initially compressed a distance x from its equilibrium length. After returning to its equilibrium, the spring is then stretched a distance x from that position. What is the ratio of the work that needs to be done on..
A 50 g ball isreleased from rest 1.0 m above the bottom of the track shown in the figure . It rolls down a straight 30 degree, segment, then back up a parabolic segment whose shape is given byy=1/4x2, where x and y are in meters.
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. compute the average current supplied to the car\'s motor?
A fighter jet lands on the deck of an aircraft carrier. It touches down with a speed of 70.4 m/s and comes to a complete stop over a distance of 197.4 m, What is the acceleration of the jet
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
A car traveling initially at 7.0 m/s accelerates to velocity 12.0 m/s in 2.0 s. What is the average acceleration of the car
A 74.9-kg skier rides a 3180-m-long lift to the top of a mountain. The lift makes an angle of 17.0 ° with the horizontal
a football spends a total of 5 seconds in the air.it reaches a peak height of 20 meters. how long does it takes to reach its peak height
How much work does the electric field do in moving a -7.7 microCoulomb charge from ground to a point whose potential is +positive 55V higher.
A uniform beam of length 12 m is supported by a horizontal cable of mass 5 kg at the top and a hinge at the bottom making a 45-45-90 triangle. determine the weight of the beam
An ideal gas has a volume of 0.20 m3, a temperature of 30 oC, and a pressure of 1.0 atm. What is the new pressure
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