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A source emits sound waves isotropic ally. The intensity of the waves 2.50m from the source is1.91*10-4W/m2. Suppose that the energy of the waves is conserved. Discover the power P of the source.
The radius of the loop is 550km. R=550km. Determine the minimum height above the top of the loop from which the ball must be released in order to "just" pass through the top of the loop.
Two identical cars (m = 1350 kg) are traveling at the same speed of 18.9 m/s. What is the magnitude of the total momentum of the two cars
A 3.00-kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.75 s. Find the frictional force acting on the block
the components of the electric field in an electromagnetic wave traveling in vacuum are described bynbspex 0 ey 0
At a testing facility, both a rocket and a jet are to be compared on their performance. The jet was tested first. what is the difference between a rocket and a jet
A cylinder contains a piston on each side of which is one kilomole of an ideal gas. The walls of the cylinder are diathermal, compute the change in the Helmholtz potential
a block of mass 240.0 g is at rest on a plane inclined at 45.0 degrees to the horizontal. the coefficient of kinetic
A tightrope walker is practicing. She is balanced on a rope at the exact midpoint of the rope. What angle with the horizontal does it make
two point charges are on the y-axis. a 2.0 microc charge is located at y 1.40 cm and a -2.22 microc charge is located
A small m = 3.00 g plastic ball is suspended by a L = 15.0 cm long string in a uniform electric field, because shown in Figure P15.50. If the ball is in equilibrium when the string makes a 12.0° angle with the vertical as indicated, what is the net c..
Suppose two highly precise, identical clocks are synchronized and one clock is placed on the North Pole, how much will the clocks differ in time
A 3.0 kg mud ball drops from rest at a height of 10 m. what is the average net force exerted by the ball
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