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Considering events in Rwanda, the former Yugoslavia, and the Darfur region of Sudan
A screw thread is cold rolled on a 1015 low-carbon steel bolt of 6.25 mm diameter. Observation shows that the length of the contact zone between die and screw blank is L = 1.25 mm. The average strain hardening during rolling corresponds to a strain o..
The satellite has an orbital period around the Earth that is the similar as that of the Moon, 27.3 days. How far away from the Earth must this satellite be placed.
2500kj of heat is absorbed to produce 1 kg of wet steam at a preasure of 1300 kPa from feed water 25(degrees celcius). Thereafter the mixture is heated further at constant preassure to a temperature of 291,69degrees celcius) For superheated steam ..
during each cycle a refrigerator ejects 605 kj of energy to a high-temperature reservoir and takes in 545 kj of energy
A 2.50 g bullet, traveling at a speed of 465 m/s, strikes the wooden block of a ballistic pendulum. The block has a mass of 275 g. What is the speed of the bullet/block combination immediately after collision.
A 75.0 kg stunt man jumps from a balcony and falls 26.5 m before colliding with a pile of mattresses. what is the average force exertedby the mattresses on the stuntman
A hockey player hits a punk so that it comes to rest in 9s after sliding 30 m on the ice. Determine (a) the initial velocity of the punk, (b) the coefficient of friction between the punk and the ice.
Calculate the first 3 energy levels for an electron in a 1-D quantum well with width of 2nm and infinitely high and steep walls.
A particle travels around a circle of radius 2.0 m making one complete revolution every 2.0 m/s. What are the particle's tangential speed and its angular speed
How come in free fall you feel weightless even though gravity is pulling down on you?
a sinusoidal wave of amplitude a1 approaches a and travels through a region of thenbspstring in which the mass per unit
When a 1.1 kg mass is hung from a spring it is found to stretch by 11 cm. The spring is stretched an additional 5 cm and released. What is the maximum potential energy
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