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A hunter is standing on flat ground between two vertical cliffs that are directly opposite one another. He is closer to one cliff than the other. He fires a gun and, after a while, hears three echoes. The second echo arrives 1.85 s after the first, and the third echo arrives 1.58 s after the second. Assuming that the speed of sound is 343 m/s and that there are no reflections of sound from the ground, find the distance (in m) between the cliffs.
A charge of 2.65mC is placed at each corner of a square 0.450m on a side, Determine the direction of the force on a charge
A solid, rectangular iron bar measures .40cm by 1.0cm by 30cm. Find the resistance between each of the three pairs of opposing faces, assume the faces in question are quipotentials.
The Royal Gorge bridge over the Arkansas River is 310 m above the river. A 61-kg bungee jumper has an elastic cord with an unstressed length of 60 m attached to her feet. Assume that, Find the maximum speed of the jumper
The front 1.20 m of a 1600 kg car is designed as a "crumple zone " that collapses to absorb the shock of a collision. what is the magnitude of the average force on the car
What is the difference between the published job market and the hidden job market. What techniques would you usually use to access the published job market.
A worker pushes a 34 kg block 13m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19.
The kinetic energy of an object is increased by a factor of 7, by what factor is the magnitude of its momentum changed
a body of mass 0.1 kg is been rotated in a circular path of diameter 1 m on a frictionless horizontal plane bye means of a string. it performs 10 revolutions in 31.4 sec. calculate the centripetal force acting on the body
Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest
A convex spherical mirror, whose focal length has a magnitude of 19.0 cm, is to form an image 12.4 cm behind the mirror. What is the magnification of the mirror
A tennis ball (m = 0.2 kg) is thrown at a brick wall. It is traveling horizontally at 16 m/s just before hitting the wall, find the magnitude of the average force of the wall on the ball
The car that hits a concrete barrier and takes 0.3 seconds to stop.
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