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An insulated copper wire is wrapped around an iron nail. The resulting coil of wire consists of 240 turns of wire that cover 1.8 cm of the nail, as shown in the figure . A current of 0.50 A passes through the wire.(Figure 1)
If the ferromagnetic properties of the nail increase the field by a factor of 100, what is the magnetic field strength inside the nail?
Express your answer using two significant figures.
A person wearing a safety belt can withstand an acceleration of -3.0 x 10^2 m/s2. How thick must barriers be to safely stop a car that hits a barrier at 112 km/h.
An elevator has mass 540 , not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 19.5 (five floors) in 16.2 , What is the maximum number of passengers that can ride in the elevator
Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 22.2oC if the outside temperature is -10.4oC.
A single loop of wire is lying in the plane of a paper, What will be the direction of the induced current flowing in the loop
A sound pulse has a power of 948.5 watts. find the intensity of the sound at the time of observation
why is walking on soft sand so tiring? what is the basic physics behind walking on sand compared with walking on
A horse draws a sled horizontally on snow at constant speed. The horse can produce a power of 1.095 hp. What is the speed with which the sled moves across the snow
A large wheel-shaped space station, 120 m in diameter, Find the rotational frequency of the wheel
A small but measurable current of 7.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm, calculate the current density and electron drift speed
The work function for potassium is 2.25eV. A beam with a wavelength of 400nm and an intensity of 10^-9W/m^2. find the maximum kinetic energy of the photelectrons
A 12.5 cm tall soft drink can has a mass of 17.0 g and contains 364 g of soda when full. Where is its center of mass when half full
When a car's starter is in use, it draws a large current. The car'slights draw much less current. As a certain car is starting, thecurrent through the battery is 58.2 A and the potential difference across the battery terminals is8.82 V.
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