An actual light bulb is shown below, with a concave mirror. The blue dot is the focal point of the mirror. What best describes the unseen image of this bulb? Light bulb and concave mirror A. Real, upside-down, and larger than the actual bulb. B. Real, upside-down, and smaller than the actual bulb. C. Virtual, right-side-up, and larger than the actual bulb. D. There is no image at all in this case.

An object has a weight of 500 on earth what is the mass of this object

What are the applications of electromagnetic waves

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?