What is the noticeable effect of the arrector pili muscle in humans Vasodialation of blood vessels in the dermis causing raised bumps on the skin

Cooler temperatures cause body hairs to flatten against the skin creating noticeable bumps.

Vasoconstriction of blood vessels in the dermis causing noticeable bumps on the skin.

Muscle contraction that causes body hair to stand on end creating "goose bumps

Name two kinds of practical electric pumps.

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?

which statements describe the image? check all that apply. the wood is releasing argon gas. this information is useful for dating ancient rock. the process works only with organic matter. the element has a half-life of 5,730 years. this shows the half-life of carbon-19.