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Identify and state the historical significance of Isabella of Castile.
What will be an ideal response?
15th century sovereign who brought unity to Spain. She also funded Christopher Columbus’s exploration of the Americas.
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A steel casting weighing 2 kg has an initial temperature of 500°C; 40 kg of water initially at 25°C is contained in a perfectly insulated steel tank weighing 5 kg. The casting is immersed in the water and the system is allowed to come to equilibrium. What is its final temperature? Ignore the effects of expansion or contraction, and assume constant specific heats of 4.18 kJ? for water and 0.50 kJ?
for steel.
What will be an ideal response?
?What may need to be done as the nozzle and electrode wear?
A. ?Tighten the nozzle and loosen the electrode to reduce the gap. B. ?Increase the cutting gas flow. C. ?Increase the machine voltage. D. ?Reduce the cutting speed.
The diagonal braces or solid wood blocks installed between floor joists and are used to distribute the weight put on the floor are called __________.
a. ribbons b. bridging c. sills d. footings
Where does the current come from that moves the needle on an analog ohm meter?
A) The meter uses a small amount of current from the circuit it is testing. B) The battery inside the meter C) No current is required to move the needle on an analog ohm meter. D) The ohm meter uses induction to produce a small electric current using the magnetic field surrounding the wire it is testing.