1. [-/4 Points] DETAILS SERPSE10 8.1.OP.001. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER Consider the following systems and time intervals and then select the appropriate version of the conservation of energy equation shown below. AK + AU + AEint = W+ Q+ TMW+TMT+ TET + TER' (a) the heating coils in your toaster during the first five seconds after you turn the toaster on O AEint = Q + TET + TER O AK + AU + AEint = W+ Q + TMW + TMT O AU = Q + TMT O 0 = Q+ TMT + TET + TER OAK = W + Q O AE int = W + Q + TET O AU = W + Q+TMW+TMT (b) your automobile from just before you fill it with gas until you pull away from the gas station at speed v O AEint = Q + TET + TER OAK + AU + AEint = W+ Q+ TMW + TMT O AU = Q + TMT Oo = Q+ TMT + TET + TER O AK = W + Q O AEint = W+ Q+ TET O AU = W + Q+ TMW+TMT (c) your body while you sit quietly and eat a peanut butter and jelly sandwich for lunch O AEint = Q + TET + TER O AK + AU + DEint = W + Q + TMW + TMT O AU = Q + TMT OO = Q + TMT + TET + TER O AK = W + Q O AEint = W + Q + TET O AU = W+ Q+ TMW +TMT (d) your home during five minutes of a sunny afternoon while the temperature in the home remains fixed (Assume that the house uses both electricity and natural gas.) O AEint = Q + TET + TER O AK + AU + AEint = W+ Q+ TMW+ TMT O AU = Q + TMT O 0 = Q + TMT + TET + TER OAK = W + Q O AEint = W + Q + TET O AU = W+Q+ TMW+TMT2. [-l4 Points] DETAILS SERPSE10 8.1.P.001. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER Consider the conservation of energy equation below. AK+AU+AEint= W+Q+TMW+ 7"|.,1T+TET+TER A ball of mass m falls from a height h to the floor. (a) Identify the appropriate version of the equation above for the system of the ball and the Earth. OAK+AU=0 OAU=W OAK=W O AEint = Q +TET + TER Use this equation to calculate the speed of the ball just before it strikes the Earth. (Use the following as necessary: m for mass, h for height, 9 for acceleration due to gravity.) v: (b) Identify the appropriate version of the equation above for the system of the ball. 0 AK = w O A'Eint: Q+TET+ TER OAK+AU=0 OAU=W Use this equation to calculate the speed of the ball just before it strikes the Earth. (Use the following as necessary: m for mass, h for height, 9 for acceleration due to gravity.) v: Need He 9? _' 3. [-11 Points] DETAILS SERPSE10 8.2.0P.002. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A block of mass 0.259 kg is placed on top of a light, vertical spring of force constant 5 075 N/m and pushed downward so that the spring is compressed by 0.099 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise? (Round your answer to two decimal places.) i:im Need Help? _' 4. [-14 Points] DETAILS SERPSE1O 8.2.0P.003.MI. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER A bead with a hole through it slides on a wire track. The wire is threaded through the hole in the bead, and the bead slides without friction around a loop the-loop (see figure below). The bead is released from rest at a height h = 3.60R. O l : h R, l G) (a) What is its speed at point A? (Use the following as necessary: the acceleration due to gravity 9, and R.) v: (b) How large is the normal force on the bead at point A if its mass is 5.60 grams? magnitude : N direction (c) What If? What is the minimum height h from which the bead can be released if it is to make it around the loop? (Use any variable or symbol stated above as necessary.) h= Need Help? mvgm