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A coil spring is to be designed for use in the suspension of an experimental trailer. Specifications are as follows: static load per spring = 3500 N, rate per spring = 40 N/mm, jounce = 150 mm (i.e., compression beyond static load position is limited to 150 mm by a rubber bumper), rebound = 58 mm (i.e., extension beyond static load position is limited to 58 mm by a rubber bumper). Infinite fatigue life is required, using a safety factor of 1.3 applied to the maximum load only. (A safety factor of 1.0 is applied to the minimum load.) A metallurgist from the spring manufacturer has advised that for the size range and surface finish of the spring, fatigue strength can be represented by a line between tmax = 600, tmin = 0, and tmax = tmin = 900MPa. Determine a suitable combination of d, D, and N.
On October 15, 2001, a planet was discovered orbiting around the star HD68988. What is the mass of HD68988
Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. how many TOTAL number of maxima can be seen
A swimmer in a relay race has a 0.50 s. lead and is swimming at aconstant speed of 4 m/s. What constant speed must the second swimmer have
Each of the three helicopter rotor blades shown in Fig. 10-67 is5.20 m long and has a mass of 153 kg. The rotor is rotating at 202rev/min. (a) What is the rotational inertia of the rotor assembly about the axis of rotation
A thin, light wire is wrapped around the rim of a wheel, If the suspended object moves downward a distance of 3.40m in 1.86s, what is the mass of the wheel
1. draw neat schematics using a ruler of the three circuits used in this experiment. label the points at which you will
Diagnostic ultrasound of frequency 4.50 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
You are riding a bicycle at 15.0 m/s toward a woman who is holdinga screaming baby. You note that you hear the scream at a perfect middle A (440 Hz) Find the actual frequency of the baby's scream.
A stable and highly soluble pollutant is dumped into a lake at the rate of 0.19 tonnes per day. The lake volume is 2E7 m3 and the average water flow-through rate is 8E4 m3 per day
In a new (inelastic) collision, the same two bumper cars with the same initial velocities now latch together as they collide. What is the final speed of the two bumper cars after the collision
An electron, starting from rest, accelerates through a potential difference of 779 V. What is the final de Broglie wavelength of the electron
You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. What is the snail\'s displacement ?x in centimeters
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