A [grams1]g piece of nickel is dropped into [grams2]g of water at 23°C in a coffee cup calorimeter. The final temperature of the water and copper mixture is registered at 27°C. The specific heat of water is 4.184J/g°C and the specific heat of copper is 0.444J/g°C. What was the initial temperature of the nickel in °C? Enter only the number into the box.
Read DetailsYou begin your road trip from Tokyo to Osaka which is 502km away in your Bentley. Let’s assume Osaka is due east of Tokyo. You accelerate from rest at a constant acceleration of 2.5m/s2 for 15 seconds. You continue at this velocity, for 300km more. You then decelerate at a constant rate until reaching Osaka, 502km from the starting point of your journey, where you stop the car. Now that you have drawn the journey, use that drawing to answer the following questions. What was your net displacement after the initial 15 seconds of acceleration in meters? [d]m What was your velocity during the middle 300km of your journey in m/s? [v]m/s What is the total time you required for this journey in hours? [t]h
Read DetailsA Toyota Camry has a gas mileage of 33 miles per gallon in the city and a Toyota Corolla a gas mileage of 27 miles per gallon. If the journey is [distance]km, and gas costs $[cost] per liter, how many dollars does the journey cost in the car with the cheaper gas mileage? Enter only a number into the box.
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