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Find the maximum weight of the sign of the boom has a compressional force of 120 newtons and the cable has a tensional force of 140 newtons? What is the Force of weight of the sigh?
A (smooth) rope of length L and mass m is placed above a hole in a table. One end of the rope falls through the hole, Find the mechanical energy lost from the rope as the end of the rope leaves the table
A 5.01E+4 kg space probe is traveling at a speed of 12600 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed, What is the final speed of the probe?
the track for a racing event was designed so that riders jump off the slope at 30 angle from a height of 5 ft. the
A turntable must spin at 33.5 rpm (3.51 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 1.0 revolutions, starting from rest
Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
A person lies flat on the sidewalk with her ear to the ground. A limb falls and two distinct sounds are heard, one from the air and the other from the concrete. How far away did the impact occur
An aircraft carrier has a speed of 13 m/s relative to the water. What is the frequency of the sound heard by the crew on the ship
A(n) 331 g object is attached to a spring and executes simple harmonic motion with a period of 0.294 s. The total energy of the system is 1.7J. Find the force constant of the spring. (N/m) Find the amplitude of the motion (in cm)
A small but measurable current of 1.2*10^-10 A exists in a copper wire whose diameter is 2.5mm compute the current density and the electron drift speed.
a cat walk 8.0m north, 5.0m east and then 6.0m south. What is the magnitude of the cat's displacement from the starting point
The fastest martial arts punch is 43.3 mph (69.6 km/h) and was achieved by John Ozuna (United States), How much force was generated by his punch
A lead ball is dropped into a lake from a diving board 5 above the water. After entering the water, it sinks to the bottom with the constant velocity equal to the velocity with which it hit the water. The ball reaches the bottom 3.20 after it is f..
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