Why do we need body membrane

Mechanical (sound) waves to Earth from satellites. How is this possible? aves are unable to travel through a vacuum, such as through space, but radio waves are transmitted

If you cut a metal cube into four pieces, do the new pieces have a different mass than the original cube? Do the new pieces have a different density than the original cube?

Metals are good conductors of electric current for which of the following reasons? They possess high concentrations of protonsThey possess low concentrations of protonsThey possess high concentrations of free electronsThey possess low concentrations

Many years ago, people believed that the sun rotated around the earth. Eventually, evidence was discovered that indicated this idea might not be accurate. What was the likely result of this discovery?

What is the value of g at height above earth's surface that is equal to twice to the radius of earth?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.