A 2-hp motor can do the same amount of work as a 1-hp motor in ______________ the time. n
Fill in the blank(s) with correct word
half
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During a lunar eclipse, the Moon's phase must be
A) first quarter. B) third quarter. C) full. D) new.
An ornament of mass 40.0 g is attached to a vertical ideal spring with a force constant (spring constant) of 20.0 N/m. The ornament is then lowered very slowly until the spring stops stretching. How much does the spring stretch?
A) 0.00200 m B) 0.0196 m C) 0.0816 m D) 0.800 m E) 0.200 m
The flow of energy is always from hot to cold and is called ___________
Fill in the blank(s) with correct word
In an experiment involving the apparatus shown in figure Q4.1b, suppose that after shining light on the cathode long enough that the voltmeter settles down to a fixed value, we suddenly cut off the light. If the voltmeter is truly ideal, what happens to the value displayed? 
A. It immediately drops to zero. B. It slowly decays to zero. C. It remains fixed. D. It does something else. (Describe what.)