1. [-/10 Points] DETAILS SERPSE10 8.1.OP.001. 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 Aint = Q + TET + TER OAK + AU + Aint = W + Q + TMW + TMT O AU = Q + TMT Oo = Q+ TMT + TET + TER OAK = W + Q O AEint = 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 Aint = Q + TET + TER OAK + AU + AEint = W + Q+ TMW + TMT O AU = Q + TMT Oo = Q+ TMT + TET + TER OAK = 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 Aint = Q + TET + TER O AK + AU + Aint = W + Q+ TMW + TMT O AU = Q + TMT Oo = Q+ TMT + TET + TER OAK = W+ Q O Aint = 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 OAK + AU + Aint = W+ Q+ TMW+ TMT O AU = Q+ TMT Oo = Q+ TMT + TET + TER OAK = W+ Q O Aint = W + Q + TET O AU = W +Q+ TMW + TMT Need Help? Read It 2. [-/10 Points] DETAILS SERPSE10 8.2.OP.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A block of mass 0.258 kg is placed on top of a light, vertical spring of force constant 5 175 N/m and pushed downward so that the spring is compressed by 0.103 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.) m Need Help? Read it 3. [-/10 Points] DETAILS SERPSE10 8.2.P.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 21.0-kg cannonball is fired from a cannon with muzzle speed of 850 m/s at an angle of 40.0 with the horizontal. A second ball is fired with the same initial speed at an angle of 90.0. Let y = 0 at the cannon. (a) Use the isolated system model to find the maximum height reached by each ball. hfirst ball m h second ball m (b) Use the isolated system model to find the total mechanical energy of the ball-Earth system at the maximum height for each ball. Efirst ball Esecond ball4. [-/10 Points] DETAILS SERPSE10 8.2.OP.003.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise 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 = 3.35R. (a) What is its speed at point ? (b) How large is the normal force on the bead at point & if its mass is 4.05 g? Click here to begin! Need Help? Read It 5. [-/10 Points] DETAILS SERPSE10 8.2.OP.004.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Two objects are connected by a light string passing over a light, frictionless pulley as shown in the figure below. The object of mass m, = 4.10 kg is released from rest at a height h = 2.90 m above the table. (a) Using the isolated system model determine the speed of the object of mass m, = 3.00 kg just as the 4.10-kg object hits the table. (b) Find the maximum height above the table to which the 3.00-kg object rises. m2 Click here to begin! Need Help? Read It