Chapter 1, Problem 7P

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12. A motorboat traveling 6 m/s, West encounters a water current travelling 3.5 m/s, South. a) Draw a vector diagram showing the resultant velocity, then determine the resultant velocity of the motorboat. b) If the width of the river is 112 m wide, then how much time does it take for the boat to travel shore to shore? c) What distance downstream does the boat reach the opposite shore?

Lake Erie contains roughly 4.00⋅10114.00⋅1011 m3 of water. Assume the density of this water is 1000. kg/m3 and the specific heat of water is 4186 J/kg˚C. It takes 2.31x10^19 J of energy to raise the temperature of that volume of water from 12.0 °C to 25.8 ˚C. An electric power plant can produce about 1110 MW.  How many years would it take to supply this amount of energy by using the 1110 MW from an electric power plant?

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m m $2° 15. A truck is stopped at a red light. Once the light turns green, the truck accelerates forward at 1.75- that same instant, a car moving with a constant speed of 50 — passes the truck. a) How many seconds will it take for the truck to catch up to the car? S b) How many metres will the truck travel before it catches up to the car? At

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I need help adding more information to my study guide. This is subject is physics    My topic : Emission  Spectrum Target Material I  need information on this topic but make it as study guide form and make 5 questions and include the answers.