Physics, 26.05.2021 19:20 AgentPangolin
Due to inertia, Newton’s first law says that an object will do the following unless acted on by an outside force.
Stay at rest or stay in motion
Stay at rest or stay in motion
Resist all forces
Resist all forces
Overpower all forces
Overpower all forces
Roll in space forever
Answers: 3
Physics, 22.06.2019 12:50
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 14:30
When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?
Answers: 3
Physics, 22.06.2019 21:10
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
Physics, 23.06.2019 06:30
Two blocks of aluminum (specific heat c=0.22 cal/g celsius) with masses of 1000 g and 100 g are at a temperature of 70 c. which block has more thermal (internal) energy? explain why?
Answers: 2
Due to inertia, Newton’s first law says that an object will do the following unless acted on by an o...
Biology, 14.12.2020 19:20
English, 14.12.2020 19:20
History, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
History, 14.12.2020 19:20
German, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Biology, 14.12.2020 19:20
Mathematics, 14.12.2020 19:20
Computers and Technology, 14.12.2020 19:20