Homework Statement
A radio station is allowed to broadcast at an average power not to exceed 24 kW.
If an electric field amplitude of 2.6×10−2 V/m is considered to be acceptable for receiving the radio transmission, estimate how many kilometers away you might be able to hear this station...
Homework Statement
A 3500 pF air-gap capacitor is connected to a 32 V battery. If a piece of mica fills the space between the plates, how much charge will flow from the battery?
Homework Equations
C= K*C_0
V= V_0/ K
Q= C*V
K of mica is 7
The Attempt at a Solution
solved for...
The attempt at a solution[/b]Question: Find the volume of the solid whose base is the triangular region of the xy-plane with vertices (0,0),(1,0),(0,1) and whose cross sections perpendicular to the y-axis are equilateral triangles.
I have the problem set up. just don't know how to get the...
Question: Find the volume of the solid whose base is the triangular region of the xy-plane with vertices (0,0),(1,0),(0,1) and whose cross sections perpendicular to the y-axis are equilateral triangles.
I have the problem set up. just don't know how to get the cross sections of the...
Homework Statement
A 3.0-g copper penny has a positive charge of 67 mC.
What fraction of its electrons has it lost? Homework Equations
I don't think I am donig this right. i need guidanceThe Attempt at a Solution
i take 3.0 grams * 63.5amu * 6.022 * 10^23 * 29 (electrons) = 3.3*10 ^ 27
67 *...