Cell membranes contain channels that allow ions to cross the phospholipid bilayer. suppose that a particular potassium channel carries a current of 2.0 pa. how many potassium ions (k) pass through it in 1.0 ms

An object's buoyant force and weight aren't equal, but they aren't the same force. True or false?

Which characteristics do all terrestrial planets have? Select all that apply. A. Water B. Iron core C. Rocky crust D. Thin atmosphere E. Dense atmosphere F. Relatively high density

Porque alguno satélites de telecomunicaciones puede permanecer en una orbita geoestacionaria

While standing still on a basketball court, you throw the ball to a teammate. part a why do you not move backward as a result? is the law of conservation of momentum violated?

The area of the brain involved with comprehension of speech is

Technician A says that engine parts should be be cleaned before a thorough test can be done to detect cracks. Technician B says that pressure testing can be used to find cracks in blocks or cylinder heads. Who is right?

How are mathematics and science related?

Radio telescopes detect waves with a wavelength of roughly 10 m. True False

2. A 0.30 kg ball is dropped onto a concrete driveway. The ball's velocity before impact is 4.5 m/s and after impact is 4.2 m/s. What is the change in the ball's momentum?

If we start with 400 atoms of a radioactive substance, how many would remain after one half-life? After 2 half-lives? After 3 half-lives? After 4 half-lives?