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A 4.80-m clothesline is hung between two poles that are 4.76 m apart. If a weight is hung in the very center, how much below the level of knots will the weight sit? (Assume the knots of the clothesline on each pole are at the same height and ignore any loss in the length of the line needed to tie the line on each pole).
A wrecking ball (weight = 5010 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3670 N. As the drawing shows, a support cable runs from the top of the boom to the tractor.
When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action, How long will the mortar shell remain in the air
You pull downward with a force of 32 N} on a rope that passes over a disk-shaped pulley of mass 1.2 kg and radius 0.07 5m. Find the linear acceleration of the 0.61 kg mass.
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
A drone, flying 300m above ground, observes a man walking on a road in a cold night (0°C). how many photons/sec does it receive from the man and from a similar surface of road
Calculate the magnetic force per meter between two such lightning bolts separated by 10 meters. (This is mainly to give a feeling for the strength of the magnetic field)
Radio station KBOB broadcasts at a frequency of 85.7 MHz on your dial using a radio waves that travel at 3.00X10^8 m/s. What's the shortest distance between the towers
Illustrate what is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
What is the magnitude of the force on the electron from the uranium ion?
Two parallel rods are each 0.50 m in length. They are attached at their centers to either end of the spring (spring constant = 150 N/m) that is initially neither stretched nor compressed.
A 10.1-g bullet is fired into a stationary block of wood having mass m = 5.04 kg. The bullet imbeds into the block. What was the original speed of the bullet
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