A cart is released at the top of a curved ramp as shown. Assume the cart remains in contact with the track. Neglect loss. Where did the cart have the greatest total mechanlcal energy? WWW Where did the cart have the greatest gravitational potential energy (GPE)? A Where did the cart have the greatest kinetic energy (KE)? B Where did the cart have the greatest speed? D Where did the cart have the greatest tangential acceleration? G m H F check answers cannot be determined Unit 13: energy, vocabulary and concepts Demos Scient i Griline Calculator DOLL

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1