Tutor profile: Shelley A.
Every time you go feed your cat dinner, you have to open a can of cat food. Soon, every time you open a can, your cat shows up at your feet. List the neutral stimulus, the unconditioned stimulus, the unconditioned response, the conditioned stimulus, and the unconditioned response for this scenario.
NS: opening a can. US: cat food UR: cat comes CS: opening a can CR: cat comes Classical conditioning works by pairing an unconditioned stimulus (a stimulus that would naturally produce the unconditioned response) with a neutral stimulus ( a stimulus that originally should not elicit any response) to associate the two so that eventually, the neutral stimulus becomes the conditioned stimulus and elicits the conditioned response. In this scenario, opening a can is the neutral stimulus because this action should not normally make a cat come to you. Cat food is the unconditioned stimulus because a cat would come to the food (the unconditioned response) naturally. During conditioning, the cat associates the sound of a can opening with the presentation of food, so that the sound of any can opening causes the cat to come to you, expecting cat food.
Subject: English as a Second Language
Q: When _____ Mary leave for school? A: She left at 8am. a. Does b. Did c. (Leave blank) d. Is
b. Did. We usually form wh- questions with a helping verb, unless they are questions about the subject. In this sentence, we need a helping verb because we are asking "When" It is not a. Does because we are talking about the past. "She left" It is not c. because this is not a question about the subject Is is not d. because we are talking about the past, not present progressive.
A rocket is projected vertically upwards, and its height h meters after time t seconds is given by the following equation: h = 120t - 10t^2 Its height will equal 270ft. after how many seconds?
First, substitute 270 for h so we get: 270 = 120t - 10t^2. Next, set one side equal to zero: 0 = 10t^2 - 120t +270 Get rid of the coefficient by dividing by 10: 0 = t^2 - 12t + 27 Factor: 0 = (t - 3)(t - 9). Think: what two factors multiply together to make 27 and add to make -12? Multiply it out to double check your answers every time you factor! Solve for t: (3 - 3) = 0 and (9 - 9) = 0. t = 3 or 9 Answer: After 3 seconds and 9 seconds.
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