The rate of diffusion of ions through the membrane of a nerve cell is proportional to the surface area of the membrane. Nerve cells are basically cylindrical in shape. If the rate of diffusion through the membrane of a cell with diameter dis R, the rate through the membrane of a cell of the same length but with diameter 2d will be

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.