An infinite line of charge with linear density λ1 = 7.4 μC/m is positioned along the axis of a thick insulating shell of inner radius a = 2.3 cm and outer radius b = 4.2 cm. The insulating shell is uniformly charged with a volume density of rho = -789 μC/m3.1) What is λ2, the linear charge density of the insulating shell?μC/m2) What is Ex(P), the value of the x-component of the electric field at point P, located a distance 8.7 cm along the y-axis from the line of charge?N/C3) What is Ey(P), the value of the y-component of the electric field at point P, located a distance 8.7 cm along the y-axis from the line of charge?N/C4) What is Ex(R), the value of the x-component of the electric field at point R, located a distance 1.15 cm along a line that makes an angle of 30o with the x-axis?N/C5) What is Ey(R), the value of the y-component of the electric field at point R, located a distance 1.15 cm along a line that makes an angle of 30o with the x-axis?N/C

Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver

The field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a.is a south pole because the field hnes spread out from this end b.a north pole because the field lines spread out from this end c.a nouth pole because the field lines enter the magnet at this end d.is a north pole because the field lines enter the magnet at this end