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A group of hikers hears an echo 4.50 second after shouting. Find how far away is the mountain that reflected the sound wave? (Assume the speed of sound is 347.6 m/s.)
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A hunter aims directly at a target (on the same level) 150 m away. If the bullet leaves the gun at a speed of 240 m/s, by how much will it miss the target
In proton-beam therapy, a high-energy beam of protons is fired at a tumor, What is the total charge of the protons that must be fired at the tumor to deposit the required energy
What is the electrostatic force on each particle.
The creation of elements in the early universe and in the starsinvolves protons tunneling through nuclei. Find the probability of the proton tunneling through 12C
A small plastic sphere of mass m= 2 g is suspended by light string in 20 centimeter in length, a uniform electric field, evaluate the net charge on the ball
A projectile is launched at 15m/s at an angle of 30 degrees above the horizontal from the edge of a cliff. If the projectile lands 10m horizontally from the base of the cliff what is the height of the cliff?
The primary coil of a transformer has N1 = 4.50 102 turns, and its secondary coil has N2 = 1.35 103 turns. what rms voltage is developed across the secondary coil
green laser light shines on a double slit creating a pattern of bright and dark spots on a screen some distance away.
A wrench is thrown at a speed of 69 mph at a wall that is 70 ft away. How much force does the wall exert on the wrench and in what direction
the magnitude jr of the current density in a certain cylindrical wire is given as a function of radial distance from
Two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.071 kg/m. Each of the four strings suspending the wires has a length of 1.2 m. When the wires carry identical currents in opposite directions, t..
The source of a sound wave has a power of 1.60 µW. Assume it is a point source. What is the sound level at that distance
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