Social Studies, 10.03.2020 04:06, zachstonemoreau
The 445-kg ram of a pile driver is designed to fall 2.21 m from rest and strike the top of a 261-kg pile partially embedded in the ground. The deeper the penetration, the greater is the tendency for the ram to rebound as a result of the impact. Calculate the velocity v of the pile immediately after impact for the following three conditions: (a) initial resistance to penetration is small at the outset, and the ram is observed to move with the pile immediately after impact; (b) resistance to penetration has increased, and the ram is seen to have zero velocity immediately after impact; (c) resistance to penetration is high, and the ram is seen to rebound to a height of 88 mm above the point of impact. Why is it permissible to neglect the impulse of the weight of the ram during impact
Answers: 3
Social Studies, 22.06.2019 02:00, lezileechavez123
This term refers to the number of people per unit area (usually a kilometer or a mile). this could refer to the number of people per square mile in a city, a county, a province, a state, or a nation.
Answers: 2
Social Studies, 22.06.2019 09:10, slend3rpiggy
Situation #1: imagine that you are a free black male living in columbus, oh in 1863. you have seen the recruiting poster and have been thinking a lot about whether or not to enlist in the union army. write a one-page letter (double spaced) to your mother telling her of the decision you have made about enlisting (or not enlisting). be sure to explain the reasons that caused you to make the decision.
Answers: 1
The 445-kg ram of a pile driver is designed to fall 2.21 m from rest and strike the top of a 261-kg...
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