Keisha drew a diagram to compare two of the fundamental forces. A venn diagram of 2 intersecting circles with the left circle labeled weak nuclear force and the right circle labeled strong nuclear force. There is an X in the weak nuclear force circle. There is a Z in the strong nuclear force circle. There is a Y in the intersecting area. Which labels belong in the areas marked X, Y, and Z? X: Always attractive Y: Very small range Z: Attractive and repulsive X: Attractive and repulsive Y: Very small range Z: Always attractive X: Very small range Y: Attractive or repulsive Z: Infinite range X: Infinite range Y: Attractive or repulsive Z: Very small range

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

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?