It would go to the positive charge im like 99% sure of that
Answer:
4400 Joules
73.33 Joules
25.9325 Joules
Explanation:
P = Power = 800 W
t = Time = 22 s
F = Force
r = Radius of arm = 90 cm
Energy
As the efficiency is 25%
Energy used in the race is 4400 Joules
Half of the energy is used in the arm
So, per stroke of paddle
The energy expenditure per arm stroke is 73.33 Joules
Displacement will be the half of the perimeter of the circle
Work done
The average force of the hand on the water is 25.9325 Joules
Answer:
The lowest mass that an object can have to be considered a star is 0.08 solar masses.
Explanation:
A star is get when it reaches the necessary temperature in its core to nuclear reaction began.
A Nuclear reaction is the fusion of lighter elements into heavier elements.
In stars there is an equilibrium between two forces, the force of gravity in the inward direction due to its own mass and the radiation pressure in the upward direction as a consequence of the nuclear reaction in its core, which is known as hydrostatic equilibrium.
Therefore, the mass of the star must be enough to the force of gravity act in the inward direction, which leads to the increase in pressure, density and of course temperature in the core, allowing the nuclear reaction to begin.
Hence, the lowest mass that an object can have to be consider a star is 0.08 solar masses.
Answers : part A => vs= square root (Gmp/a). Part B => Energy of satellite = - G(mp) (ms) / 2a.
