Your goal is to predict the maximum height reached by the puck. Select Trial 3 from the video above. You will make measurements from the video that will allow you to predict the maximum height that the puck attains. This is your experiment, and you will come up with your own method to achieve the stated goal. You will need to address the following points in your experimental summary: 1) Describe in general how you will go about finding the height the puck will attain. 2) What measurements will you make to find the height of the puck

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

a and c

c is 100% but i am confused in a

v=ir = 3x15 =45 v

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.