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An iron ball hangs from a 21.5-m steel cable and is used in the demolition of a building at a location where the acceleration due to gravity is 9.78 m/s2. The ball is swung outward from its equilibrium position for a distance of 4.20 m. Assuming the system behaves as a simple pendulum, find the maximum speed of the ball during its swing.
The person shown below is pushing on a refrigerator that sits on a level floor. Assume the floor is very slippery so that the only horizontal force on the refrigerator is due to the person. find the magnitude of the refrigerator's acceleration
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 180 N. What is the actual frictional force when the man has climbed 1.0 m along the ladder
If a bungee cord is stretched horizontally to a length of 2.0m , the tension in the cord is 1.9N. What is the tension in the 3.8-m-long cord
Determine the highest speed the stone can attain without breaking the string.
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. What is the speed of the wreckage just after the collision
An inductor of 219 mH with a resistance of 6 O is connected to a power supply with a maximum voltage of 219 V and a frequency of 69 Hz. Find the power loss in the inductor
The potential difference across a coil is 2.93V at an instant when the current is 347mA, changing at a rate of 327mA/s. At a later instant, What is the inductance of the coil
Light of wavelength 624 nm passes through a single slit and then strikes a screen that is 1.2 m from the slit. What is the width of the slit
In tae-kwon-do, a hand is slammed down onto a target at a speed of 13 m/s and comes to a stop during the 7.0 ms collision. What are the magnitudes of the impulse
A person's right eye can see objects clearly only if they are between 27cm and 86cm away. What will be the near point with the lens in place
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank
What is the thinnest film of MgF2 n=1.39 on glass that produces a strong reflection for orange light with a wavelength of 600 nm.
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