11. If someone was 2.5 m from a lightning rod when it was struck by lightning,...
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If someone was 2.5 m from a lightning rod when it was struck by
lightning,...
There is a delay from the time someone sees a flash of lightning to the time...
There is a delay from the time someone sees a flash of lightning to the time that thunder is heard due to the time it takes for sound to travel from where the lightning struck to where you are when you hear the thunder. If you hear thunder 13.6 seconds after seeing the lightning, how far away did the lightning bolt strike? Take the speed of sound in air to be 343 m/s. Answer in metres.
Exercise 28.17 Lightning bolts can carry currents up to approximately 20 kA. We can model such...
Exercise 28.17 Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, straight wire. Part A If you were unfortunate enough to be 5.5 m away from such a lightning bolt, how large a magnetic field would you experience? Express your answer using two significant figures. B1 = T SubmitMy AnswersGive Up Part B How does this field (B1) compare to one (B2) you would experience by...
A powerful bolt of lightning can carry a current of 225 kA. (a) Treating a lightning...
A powerful bolt of lightning can carry a current of 225 kA. (a) Treating a lightning bolt as a long, thin wire, calculate the magnitude of the magnetic field produced by such a bolt of lightning at a distance of 91 m. (Answer in µT) (b) If two such bolts strike simultaneously at a distance of 25 m from each other, what is the magnetic force per meter exerted by one bolt on the other? (Answer in N/m)
In a lightning bolt, a large amount of charge flows during a time of 2.1 10-3...
In a lightning bolt, a large amount of charge flows during a time of 2.1 10-3 s. Assume that the bolt can be treated as a long, straight line of current. At a perpendicular distance of 30 m from the bolt, a magnetic field of 7.8 10-5 T is measured. How much charge has flowed during the lightning bolt? Ignore the earth's magnetic field.
Problem 4 The bolt of lightning depicted in the figure below passes 230 m from a...
Problem 4 The bolt of lightning depicted in the figure below passes 230 m from a 135-turn coil oriented as shown. If the current in the lightning bolt falls from 6.10 X 106 A to zero in 10.9 us, what is the average voltage induced in the coil? Assume the distance to the center of the coil determines the average magnetic field at the coil's position. Treat the lightning bolt as a long, vertical wire and ignore the 200 m...
You've decided to protect your house by placing a 6.8-m-tall iron lightning rod next to the...
You've decided to protect your house by placing a 6.8-m-tall
iron lightning rod next to the house. The top is sharpened to a
point and the bottom is in good contact with the ground. From your
research, you've learned that lightning bolts can carry up to 54 kA
of current and last up to 50 ?s.
Part A How much charge is delivered by a lightning bolt with these parameters? Express your answer to two significant figures and include the...
3. (Biot-Savart for currents) A lightning bolt carries current I straight down toward the ground. You...
3. (Biot-Savart for currents) A lightning bolt carries current I straight down toward the ground. You are standing a distance d away from the impact point along the +y axis. If the bolt originates at a height z h and terminates on the ground at z 0, (a) find a formula for the magnitude of the magnetic field you experience, and give its direction. [ Hint: this is almost the same as a derivation we did in class.] (b) Simplify...
A lightning bolt strikes 30 m from a circular metal loop of area 0.5 m^2. As...
A lightning bolt strikes 30 m from a circular metal loop of area 0.5 m^2. As the lightning bolt current rises from zero to 6 x 10^6 amps in 10 microseconds, what is the magnitude of the average induced emf in the loop? Please explain the process using non-calculus based steps.
A lightning bolt produces a rapidly varying magnetic field. If the bolt strikes the earth vertically...
A lightning bolt produces a rapidly varying magnetic field. If the bolt strikes the earth vertically and acts like a current in a long straight wire, it will induce a voltage in a loop aligned like that shown in the figure below. What voltage is induced in a 0.90 m diameter loop 60.0 m from a 2.00x106 A lightning strike, if the current falls to zero in 25.0 us? (Discuss circumstances under which such a voltage would produce noticeable consequences.)...
(a) What is the force per meter (in N/m) on a lightning bolt at the equator...
(a) What is the force per meter (in N/m) on a lightning bolt at the equator that carries 19,630 A perpendicular to the Earth's 3.00 x 10-5 T field? N/m (b) What is the direction of the force if the current is straight up and the Earth's field direction is due north, parallel to the ground? ---Select- A wire carrying a 35.0 A current passes between the poles of a strong magnet such that the wire is perpendicular to the...
Problem 4 The bolt of lightning depicted in the figure below passes 230 m from a 135-turn coil oriented as shown. If the current in the lightning bolt falls from 6.10 X 106 A to zero in 10.9 us, what is the average voltage induced in the coil? Assume the distance to the center of the coil determines the average magnetic field at the coil's position. Treat the lightning bolt as a long, vertical wire and ignore the 200 m...
You've decided to protect your house by placing a 6.8-m-tall
iron lightning rod next to the house. The top is sharpened to a
point and the bottom is in good contact with the ground. From your
research, you've learned that lightning bolts can carry up to 54 kA
of current and last up to 50 ?s.
Part A How much charge is delivered by a lightning bolt with these parameters? Express your answer to two significant figures and include the...
3. (Biot-Savart for currents) A lightning bolt carries current I straight down toward the ground. You are standing a distance d away from the impact point along the +y axis. If the bolt originates at a height z h and terminates on the ground at z 0, (a) find a formula for the magnitude of the magnetic field you experience, and give its direction. [ Hint: this is almost the same as a derivation we did in class.] (b) Simplify...
A lightning bolt produces a rapidly varying magnetic field. If the bolt strikes the earth vertically and acts like a current in a long straight wire, it will induce a voltage in a loop aligned like that shown in the figure below. What voltage is induced in a 0.90 m diameter loop 60.0 m from a 2.00x106 A lightning strike, if the current falls to zero in 25.0 us? (Discuss circumstances under which such a voltage would produce noticeable consequences.)...
(a) What is the force per meter (in N/m) on a lightning bolt at the equator that carries 19,630 A perpendicular to the Earth's 3.00 x 10-5 T field? N/m (b) What is the direction of the force if the current is straight up and the Earth's field direction is due north, parallel to the ground? ---Select- A wire carrying a 35.0 A current passes between the poles of a strong magnet such that the wire is perpendicular to the...
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