The primary purpose of a lightning rod is to
A) attract lightning and guide it to the ground.
B) discharge the structure to which it is attached.
C) cancel the electric field within the structure to which it is attached.
D) induce a charge opposite to that of charged clouds overhead.
Answer: B
You might also like to view...
A machine gun, of mass 35. kg, fires 50. gram bullets, with a muzzle velocity of 750. m/s, at the rate of 300. rounds per minute. What is the average force exerted on the machine gun mount?
What will be an ideal response?
The output voltage of an AC generator is of the form V = V0 sin(2?ft). A typical frequency in household circuits is 60 Hz. Using radians for angular measure in this equation, what is the factor 2?f in radians per second for this frequency?
a. 2? b. 120 c. 377 d. 60
A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car
A) The force of collision on the truck is greater then the force of collision on the car. B) The force of collision on the truck is equal to the force of collision on the car. C) The force of collision on the truck is smaller than the of collision force on the car. D) The truck did not slow down during the collision. E) The car did not slow down during the collision.
M dwarfs on the main sequence are brown dwarfs
a. True b. False Indicate whether the statement is true or false