Homework Statement
(P)
/ \
(F) (U)
/ \ / \
(D, E) (J, O) (T) (V)
Given the 2-3 tree, delete F E V from the tree in the given order. Show the tree after each deletion.
Homework Equations
Min = 1
Max = 2
The Attempt at a...
Would the equation be:
Prad = I / c ?
Plugging stuff in, this is what I get:
c = 1/√(μoεo)
I = P/ (SA)
Prad = P / ( (SA)*c ) = 100W/ (4π(.08)2*c) = 4.15*10-6 Pa
F= (4.15*10^-6 Pa) * (.0001 m2) = 4.15*10-10 N
Homework Statement
Estimate the rms electric field in the sunlight that hits Uranus, knowing that the Earth receives about 1350 W/m2 and that Uranus is 19.2 times farther away from the Sun (on average) than is the Earth.
Homework Equations
I=cεoErms2
E=V/d
The Attempt at a Solution
Eearth=V/d...
Homework Statement
a) Estimate the radiation pressure due to a 100 W bulb at a distance of .08 m from the center of the bulb.
b) Estimate the force exerted on your fingertip if you place it at this point. (Assume an area of .0001 m2 for the fingertip.)
Homework Equations
F=PradA
The Attempt...
That is the exact phrasing of the question. That phase angle, according to the formula that I used, should be the angle between voltage and current, not impedance and current.
tanΦ = (VL-VC )/ VR = (XL - XC)/ R
Ah I figured out the problem! My original answer in this post -89.5° was correct. The mistake I made was that I should not have converted it to 270.48°, since technically φ should be negative since XC > XL, and you should generally take the smaller angle of the angles between two vectors.