Explanation:
It is given that,
Electric field,
The relation between the electric force and the electric field is given by :
Where
q is the charge
(a) Charge on the electron,
Electrostatic force,
(b) If an electron is missing, the net charge remains the same only sign changes.
So, force becomes,
Hence, this is the required solution.
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
Explanation:
It is given that,
Mass of the Cadillac,
Speed of Cadillac, (towards north)
Mass of Volkswagen,
The cars stuck together and slid to a halt, leaving skid marks angled 35 degrees north of east.
According to the law of conservation of momentum,
The momentum along x axis, ............(1)
The momentum along y axis, ...........(2)
From equation (1) and (2) it is clear that,
So, the Volkswagen going just before the impact is 8.72 m/s. Hence, this is the required solution.
Extremophiles occur in all three domains of life: bacteria, archaea, and eukaryotes. Most extremophiles are microorganisms.