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A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 28.0 m apart and the total power of the sound coming from each speaker is 0.478 W. Find the total sound intensity the man hears when
(a) he is at his initial position halfway between the speakers, and
(b) after he has walked 5.0 m directly towards one of the speakers.
A beam of light enters from air (a =1.0) into three layered surface. Each layer has different refractive index. Trace the path of the light beam as it goes through each layer.
A 202 kg cart runs into the rear end of a 103 kg cart that is stationary. what is the speed of the cart before collision
a fisherman notices that his boat is moving up and down periodically without any horizontal motion owing to waves on
A positive charge of +q1 is located 5.35 m to the left of a negative charge -q2. The charges have different magnitudes. On the line through the charges, the net electric field is zero at a spot 2.95 m to the right of the negative charge. On this line..
a transformer connected to a 120-v rms ac line is to supply 12. v rms to a portable electronic device. the total
After being accelerated to a speed of 1.76×105m/s , the particle enters a uniform magnetic field of strength 0.800T and travels in a circle of radius 35.0cm, Find the ratio m/q for this particle
Given the moon's period about the earth is 27.32 days and the earth-moon distance is 3.84 x 108 meter, compute the mass of the earth
A ball of mass 0.598 kilogram is dropped from rest from a height of 1.36 meter. It rebounds to a height of 0.627 meter. Find how much mechanical energy was lost during the collision with the floor
A truck accelerates from rest, on horizontal ground, and its speed as a function of time follows the equation 15t - 2t2. Once the truck reaches maximum speed, it maintains a constant speed for another 4 minutes. At this point the truck decelerate..
Two positive charges, each of magnitude 1 10-6 C, are located a distance of 14 cm from each other. obtain the magnitude of the force exerted on each charge
A 0.06-kg lead bullet traveling 298 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs, what is its temperature change
Robin hood aims a 500 g arrow at a 2 kg bird perched on a tree. The arrow is released with a speed of 40 m/s at an angle 30 degrees to the horizon. How far from the tree base do the bird and arrow land
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