Physics, 19.12.2019 04:31 caityi9619
Prestressed concrete is often used in modern construction because:
a. its unique strength allows predetermined engineering stresses to be placed in members to counteract stresses that occur when the unit is subjected to service loads
b. it is "scored" in certain areas, which allows it to break apart predictably when a building explodes
c. it doesn't normally have end anchors, which makes it easier to attach to adjacent members
d. both b and c
Answers: 2
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3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.
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Question 1(multiple choice worth 2 points) in order to be considered work, the components that must be present are • a force and a movement in the same direction as the force an action which causes movement and an opposite reaction an action which causes no movement or reaction a force and a movement in the opposite direction of the force
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Physics, 23.06.2019 10:00
The standard cell potential (e°cell) for the reaction below is +0.63 v. the cell potential for this reaction is when the concentration of zn2+ = 1.0 m and the concentration of pb2+ = 2.0 x 10-4 m. pb2+(aq) + zn(s) > zn2+(aq) + pb(s)
Answers: 2
Prestressed concrete is often used in modern construction because:
a. its unique stren...
a. its unique stren...
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