Answer:
The answer is D
The second law of thermodynamics
Answer:
The number of turns in the solenoid is 1.95 x 10⁴.
Explanation:
given information:
the length of solenoid, L = 0.34 m
magnetic field, B = 6.5 T
current, I = 90 A
to find the number of turn in solenoid, we can start from the magnetic field equation,
B = μ₀nI, n = N/L
B = magnetic field (T)
μ₀ = permeability (4π × 10⁻⁷ T.m/A)
n = the number turn per unit length (turn/m)
I = current (A)
N = the number turn in solenoid
L = the length of solenoid
thus,
B = μ₀IN/L
N = B L/μ₀I
= (6.5) (0.34)/(4π × 10⁻⁷) (90)
= 1.95 x 10⁴ turn
Kepler based his laws of planetary motions off of Newton’s law of gravity.
Explanation:
The given data is as follows.
m = 5000 kg, h = 800 km =
, r = R + h =
kg, G =
As we know that,
v =
And, it is known that formula to calculate angular velocity is as follows.
v =
=
=
Thus, we can conclude that speed of the satellite is .
Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is in the form of visible light. Light is made of waves of different frequencies.