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The intensity of the sound wave from a jet airplane as it is taking off is 114 W/m2 at a distance of 4.3 m. What is the intensity of the sound wave that reaches the ears of a person standing at a distance of 120 m from the runway? Assume that the sound wave radiates from the airplane equally in all directions.
A wooden dowel (cylinder) has a diameter of 2.20 cm. Determine the density of the dowel
A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 70.6 cm. What is the value of the spring constant k
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
At a particular instant of time a light beam traveling in the positive x direction, find the direction of the electric field and explain
a 1.50 m section of it at one end is bent 90° in the negative z direction. Illustrate what is the total magnetic flux through the surface? Choose directions for the area vectors so that the flux through each surface is positive.
question1the pilot of the aircraft wishes to fly due west in a 48.5 kmh wind blowing toward the south. the speed of an
question1a movable piston having a mass of 12 kg and a cross-sectional area of 7 cm2 traps 0.25 mol of an ideal gas in
A 6.50 g bullet moving at 726 m/s strikes a 590 g wooden block at rest on a frictionless surface. What is the speed of the bullet-block center of mass
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
The force on a particle is directed along an x axis and given by F = 0.97(x/4.6 - 0.52) where x is in meters and F is in Newtons. Find out the work done by the force in moving the particle from x = 0 to x = 8.9 m.
q1. a dentists drill starts from rest. after 3.30 s of constant angular acceleration it turns at a rate of 2.6 104
Sea Launch mission planners are going to launch their Russian launch vehicle from a Lo = 3 degrees into LEO with an inclination of 34 degrees and the longitude of ascending node of 124 degrees. Current LST at the launch site is 1140.
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