Answer:
Explanation:
The pinball-spring system is modelled after the Principle of Energy Conservation:
The height reached by the pinball is:
The distance travelled by the pinball is:
Answer:
Explanation:
Given that,
Mass = 5kg of water
Initial pressure P•i = 5bar = 500 kPa
Pressure is constant P = 5bar
Initial temperature T•i = 360°C
Heat transferred Q = 2660 KJ
Kinetic and potential energy are negligible
a. Final volume
The initial enthalpy and specific volume can be determine from the steam table.
h•1 = 3188.83 KJ/kg
v•1 = 0.5796 m³/kg.
So, we can calculate the final enthalpy by using
Q = m(h2—h•1)
2660 = 5 (h2—3188.83)
2660/5 = h2—3188.83
h2 — 3188.83 = 532
h2 = 520 + 3188.83
h2 = 3720.83 KJ/kg.
Using steam table, we can determine the final temperature and final specific volume
T•f = 608°C
v•f = 0.8115 m³/kg
Then, specific volume = volume /mass
v•f = v2/m
v2 = vf × m
v2 = 0.8115 × 5
v2 = 4.0575m³
b. Workdone?
W = m•P•(vf —vi)
W = 5 × 500(0.8115 — 0.5796)
W = 579.75 KJ
Answer:
This is the answer that I got.
Explanation:
Hope it is right.
Answer:If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. All of the land masses would be scoured clean of anything not attached to bedrock.
Explanation: