Flying Circus of PhysicsKiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a legend – he was neither stupidnor suicidal. Suppose a kite string of radius 2.07 mm extends directly upward by 0.809 km and is coated with a 0.514 mm layer ofwater having resistivity 177 Q-m. If the potential difference between the two ends of the string is 190 MV, what is the currentthrough the water layer? The danger is not this current but the chance that the string draws a lightning strike, which can have acurrent as large as 500 000 A (way beyond just being lethal).NumberiUnits

The current through the water layer. given: Radius of stringRstring=2.07 mm=2.07×10-3 mradius of…

Answered: Kiting during a storm. The legend that…

Similar questions

The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm2 varies with time according to the equation q = 4t3 + 3t + 6, where t is in seconds. (a) What is the instantaneous current through the surface at t = 1.10 s? A (b) What is the value of the current density? KA/m2
A wire 3.77 m long and 6.81 mm in diameter has a resistance of 20.6 mΩ. A potential difference of 26.6 V is applied between the ends. What is the magnitude of the current density? Current in the wire is 1291.26 A Answer isnt 11284400, 3547400000,
Part A:If there is an annealed copper wire with resistivity 0.172 nano ohm meters and a diameter of 2mm placed in an electric field of 16,000N/C, then how much current will go through the wire? Part BIf this wire (the same as in part A) has an electron density of 8.5x10^28 m^-3 then what is the drift velocity of the electrons in this wire? The charge of each electron is, as usual, 1.602x10^-19C.
Variations in the resistivity of blood can give valuable clues to changes in the blood's viscosity and other properties. The resistivity is measured by applying a small potential difference and measuring the current. Suppose a medical device attaches electrodes into a 1.5-mm-diameter vein at two points 5.0 cm apart. What is the blood resistivity if a 8.6 V potential difference causes a 240 μA current through the blood in the vein?
The resistance of the body varies from approximately 500 kΩkΩ (when it is very dry) to about 1.0 kΩkΩ (when it is wet). The maximum safe current is about 5.3 mAmA. At 10 mAmA or above, muscle contractions can occur that may be fatal. What is the largest potential difference that a person can safely touch if his body is wet?
An aluminum wire with a diameter of 0.125 mm has a uniform electric field of 0.195 V/m imposed along its entire length. The temperature of the wire is 35.0°C. Assume one free electron per atom. (a) Use the information in this Table of Resistivities and Temperature Coefficients to determine the resistivity (in Ω · m) of aluminum at this temperature. (b) What is the current density (in MA/m2) in the wire? J =----- MA/m2 (c) What is the total current (in mA) in the wire? I =--------- mA (d) What is the drift speed of the conduction electrons? vd = ------µm/s (e) What potential difference must exist between the ends of a 1.70 m length of the wire to produce the stated electric field? ΔV = --------- V
Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a legend — he was neither stupid nor suicidal. Suppose a kite string of radius 2.10 mm extends directly upward by 0.802 km and is coated with a 0.520 mm layer of water having resistivity 155 Ω·m. If the potential difference between the two ends of the string is 176 MV, what is the current through the water layer? The danger is not this current but the chance that the string draws a lightning strike, which can have a current as large as 500 000 A (way beyond just being lethal).
A current I =0.35 A flows through a cylindrical resistor made out of some unknown ceramic-like composite. The radius of the cylindrical body is 4.25 mm while the length is 1.65 cm. If the potential drop over the resistor is 7.54 V, what is the resistivity of the unknown ceramic material? (Answer in Ohm*m)
What is the resistance of a 2.54-cm-diameter rod of pure silicon that is 20.0 cm long. What current flows through the rod when 1.00 × 103V is applied to it?
A lightning rod on top of a building consists of an iron spike 1.5 m long with a circular crosssection of diameter 1.5 cm. During a lightning strike, the rod carries a current of 1000 A. What is the potential difference across the rod when this current flows? The resistivity of iron is 1.0 x 10-7 Ωm.
A wire 3.43 m long and 6.38 mm in diameter has a resistance of 11.6 mQ. A potential difference of 17.7 V is applied between the ends. (a) What is the current in amperes in the wire? (b) What is the magnitude of the current density? (c) Calculate the resistivity of the material of which the wire is made. (a) Number Units (b) Number i Units (c) Number i Units >
A heating element is made by maintaining a potential difference of 75.0 V across the length of a Nichrome wire has a 2.60 x 10-6 m² cross section. Nichrome has a resistiv of 5.00 x 10-7 m. If the element dissipates 5000 W, wha its length? Give your answer in cm.