the somatic nervous system is responsible for movement of voluntary muscles and the process known as a reflex arc
Explanation:
Answer:
65.14 g
Explanation:
The change in the entropy of two ,metals on mixing is
Here, R is real gas constant, n_{cu} is the number of moles of the copper, and n_{Ni} is the number of moles of nickel
Thus the number of moles of Nickel is
=1.7 moles
now put n_{Ni} = 1.7 ΔS= 15,
R= 8.314 and solve
On solving the number of moles of copper in the mixture
n_cu= 1.025
Thus the mass of copper is = n_cu×M_cu = 1.025×63.55 = 65.14 g
Therefore the required mass is = 65.14 g
Answer:
5026.55 m/s
Explanation:
Gravitation potential of a body in orbit from the center of the earth is given as
Pg = -GM/R
Where G is the gravitational constant 6.67x10^-11 N-m^2kg^-2
M is the mass of the earth = 5.98x10^24 kg
R is the distance from that point to the center of the earth = r + Re
r is the distance above earth surface, Re is the earth's radius.
R = 1610 km + 6370 km = 7980 km
Pg = -(6.67x10^-11 x 5.98x10^24)/7980x10^3
Pg = -49983208.02 J/kg
The negative sign means that the gravitational potential is higher away from earth than it is at the earth's surface (it shows convention).
This indicates the kinetic energy per kilogram that the chest of jewel will fall with to earth.
Gravitation Potential on earth's surface is
Pg = -GM/Re
= -(6.67x10^-11 x 5.98x10^24)/6370x10^3 = -62616326.53 J/kg
Difference in gravity potential = -49983208.02 - (-62616326.53)
= 12633118.51 J/kg
The velocity V of the jewel chest will be
0.5v^2 = 12633118.51
V^2 = 25266237.02
V = 5026.55 m/s
there it is fella tried on ma own consciousness
c. vibrations and wave phenomena