Physics, 05.05.2020 04:20 wendyyy7774
A roller coaster starts from the top of a hill at rest with a potential energy of 3300 J.
What is the total mechanical energy of the roller coaster?
How much work was needed to bring the roller coaster to the top of the hill?
If the roller coaster begins to fall and now has a potential energy of 1120 J, and no work was done, how much kinetic energy does it now have?
Answers: 2
Another question on Physics
Physics, 22.06.2019 05:30
What do you think car designers do if the damage caused by a crash test is too severe?
Answers: 1
Physics, 22.06.2019 13:30
6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.
Answers: 3
Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
Answers: 1
Physics, 22.06.2019 16:30
Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?
Answers: 2
You know the right answer?
A roller coaster starts from the top of a hill at rest with a potential energy of 3300 J.
Questions
English, 30.08.2019 17:00
Mathematics, 30.08.2019 17:00
Biology, 30.08.2019 17:00
Mathematics, 30.08.2019 17:00
Mathematics, 30.08.2019 17:00
