This is the area where Earth's magnetic field is the strongest. *
1 point
A. The Grand Canyon
B. The equator
C. North & South Poles

If the current in a wire is directed downward, what is the direction of the magnetic field produced by the current? *
A. in the same direction as the current
B. clockwise in the horizontal plane
C. counterclockwise in the horizontal plane

How do step-up transformers work? *
A. They increase the voltage and the current for a home.
B. They decrease the voltage before it leaves a power plant.
C. They increase the voltage for efficient long-distance transmission.

DOES ANYONE HAVE THE ANSWERS TO THE TEST IN CONNECTIONS

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

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?