Sin(30°) =1/2 0.5
cos(30°) = (√3)/2
Note that the sin of an angle is equal to the cos of the complementary angle:
sin(60°) =cos(30°) = (√3)/2 since 30+60 = 90 (compl. angle)
A) The calculated resistance needed to generate the current at low speed is; R = 480 ohms
B) Resistance at medium and larger speeds are;
At medium speed; R is less than that at low speed
At larger speed; R is less than that at medium speed.
A) We are given;
Voltage; V = 120 V
Current at lower speed; I = 0.25 A
Formula for resistance here is;
R = V/I
R = 120/0.25
R = 480 ohms
B) This means that if larger currents are required at higher speeds, it means that lower resistance would be required.
Similarly at medium currents the resistance will be lesser than that at lower speed but greater than that at larger speeds.
Read more on ohms law at; brainly.com/question/1220677
According to the levels of processing, deciding whether an umbrella would be useful to pack for a trip, would most improve the ability to recall the word "umbrella". This model focuses on the depth of processing in memory.
The 'levels of processing' is a model developed by the cognitive psychologists F. Craik and R. Lockhart in 1972.
This model (levels of processing model) puts focus on the depth of processing developed for memory tasks.
This model can be used to predict how information is processed, where memory can be considered as an outcome of processing information.
Learn more about the levels of processing here:
brainly.com/question/5475845
Answer:
Second time here for the points
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