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A 15-kg motor is supported by four springs, each of constant Computer Problems 60 kN/m. The unbalance of the motor is equivalent to a mass of 20 g located 125 mm from the axis of rotation. Knowing that the motor is constrained to move vertically, use computational software to calculate and plot the amplitude of the vibration and the maximum acceleration of the motor for motor speeds of 1000 to 2500 rpm
A bullet is shot into a block of plastic. The bullet penetrates the block 0.3 meter. Use Newton's Second Law to obtain the magnitude of the force exerted on the bullet by the plastic block
The same article that claims that the correlation between changes in stock prices in Europe and the United States is 0.8 goes on to say: "Crudely, that means that movements on Wall Street can explain 80% of price movements in Europe."
A submarine dives to a depth of 293 feet in the ocean. What is the force (in pounds) acting on a hatch that has an area of 3 square feet?
A thin, uniform rod with negligible mass and length 0.200 m is attached to the floor by a frictionless hinge at point P. A horizontal spring with force constant k = 4.80 N/m connects the other end of the rod to a vertical wall.
Consider the following pipe assembly containing a permeable filter of length L=20cm, area A=20cm^2, and permeability of 4 millidarcys. what is the velocity of the flow through the filter section
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
when a 100ohm resistor is connected to a battery of emf e and internal resistance of r the battery delivers a power of
A 65.0-kg snowboarder works on a half-pine event from top of one side of the semicircle (7.00 m radius) to the other side. how much more work is required from the snowboarder
You are given a pair of Hemholtz coils, each with radius R = 12 cm, containing 140 turns of wire in each coil. Calculate the magnetic field produced in the center of the space between the coils
starting with the four maxwells equations for time-varying electromagnetic fields in either differential and integral
A commuter train blows its 200-Hz horn as it approaches a crossing. The speed of sound is 335 m/s. An observer waiting at the crossing receives a frequency of 208 Hz. What is the speed of the train
If the speed of sound is 1100 feet per second and a tuning fork oscillates at 440 cycles per second, what is the wavelength of sound produced.
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