Physics
Physics, 01.12.2019 20:31, timozy95

Which statement is true about the law of conservation of energy for an object released from a certain height above the ground

answer
Answers: 2
Show answers

Similar questions

Предмет
Physics, 19.07.2019 04:40, xman839
Which statement is true about the law of conservation of energy for an object released from a certain height above the ground? a. in the absence of any external forces and at any point, the kinetic energy and the potential energy are always equal. b. in the absence of any external forces and at any point, the kinetic energy is always greater than the potential energy. c. in the absence of external forces and at any point, the potential energy is always greater than the kinetic energy. d. in the absence of external forces and at any point, the sum of the kinetic energy and the potential energy is always constant.
Answers: 2
continue
Предмет
Physics, 03.08.2019 15:00, aceccardi03
Avase with mass m falls from height h to the floor. which of the following is true? a. it is not an isolated system because the vase moves. b. the law of conservation of energy applies. c. there is no pe, so no conservation of energy. d. the ke can change, so there is no conservation of energy.
Answers: 1
continue
Предмет
Physics, 14.09.2019 11:10, Svetakotok
"a problem involves a car of mass m going down a track from a height h, and round a loop of radius r. the loop is frictionless. it asks for the minimum cut-off speed required, at the highest point in the loop (call it point d), such that the car makes it round the loop without falling. i know the solution; i should set the centripetal accleration equal to 9.81. in other words, contact force with the track at point d is equal to zero. but i tried solving it by conservation of energy. at point d, the car is at a height 2r from ground level. therefore, in order for the car to reach that height at point d, it must initially have a potential energy of mg(2r). meaning, it should be released from a height h = 2r. i got the wrong answer and i'm confused why that happened. isn't that how conservation of energy work? clarify, where's the error in my solution? "
Answers: 2
continue
Предмет
Physics, 21.09.2019 05:10, rebeccacopley8307
"a problem involves a car of mass m going down a track from a height h, and round a loop of radius r. the loop is frictionless. it asks for the minimum cut-off speed required, at the highest point in the loop (call it point d), such that the car makes it round the loop without falling. i know the solution; i should set the centripetal accleration equal to 9.81. in other words, contact force with the track at point d is equal to zero. but i tried solving it by conservation of energy. at point d, the car is at a height 2r from ground level. therefore, in order for the car to reach that height at point d, it must initially have a potential energy of mg(2r). meaning, it should be released from a height h = 2r. i got the wrong answer and i'm confused why that happened. isn't that how conservation of energy work? clarify, where's the error in my solution? "
Answers: 2
continue
Do you know the correct answer?
Which statement is true about the law of conservation of energy for an object released from a certai...

Questions in other subjects:

Konu
Mathematics, 21.07.2019 04:00
In mrs. stones class 18 out of 22 students turn in their homework on time. what percent of class turn in their homework on time...
Konu
History, 21.07.2019 04:00
Three ways in which governments consolidated their power during the period 1750-1900...
Konu
Social Studies, 21.07.2019 04:00
Who proposed a plan in 1790 to pay off the nation's debt...
Konu
Mathematics, 21.07.2019 04:00
Harry buys a sofa set that costs$2,000.he pays for it with 12 month installments. how much will he pay each month? if he has to pay5%in interest how much will he pay in all for th...
Konu
Mathematics, 21.07.2019 04:00
Reflected over the x-axis, horizontal compressed by 2, and up 4 units...
Konu
Chemistry, 21.07.2019 04:00
Which of the two substances would have the higher boiling point ch4 or c?...
Konu
Mathematics, 21.07.2019 04:00
Astudent had to complete 15 problems total. if she finshed 6 problems in class what is the ratii of problems to complete to problems already finished?...
Konu
Social Studies, 21.07.2019 04:00
Which part of the brain is responsible for the highest level of thought? a. cerebellum b. brainstem c. thalamus d. cerebrum?...
Konu
English, 21.07.2019 04:00
What are some quotes that state chris mccandless isn't admirable in "into the wild"?...
Konu
Chemistry, 21.07.2019 04:00
Which pair of elements do you expect to be most similar in their chemical properties? which pair of elements do you expect to be most similar in their chemical properties? ne and n...
Other tasks in the category: Physics More task
See results (0)