What is the electrical charge of a cation? a. positive b. negative c. no charge d. none of the above

Na+/k+-atpase is considered to be an electrogenic pump because

In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to push grocery carts up the ramps, and it is obviously desired this not be too difficult.

What is the most violent star death called

At a divergent plate boundary such as a mid ocean ridge, you should expect to find

If the voltage, v, in an electric circuit is held constant, the current, i, is inversely proportional to the resistance, r. if the current is 90 milliamperes when the resistance is 4 ohms, find the current when the resistance is 12 ohms.

A 2 kg book is pushed across a table is a force 4. Assuming no friction, what is the acceleration of the book?

When electricians use wiring for houses they use both copper and rubber. Which do you think is used as a conductor?

Suppose that 600 W of radiation in a microwave oven is absorbed by 250 g of water in a very lightweight cup. Approximately how long will it take to heat the water from 20 C to 80 C? (A) 50 s (B) 100 s (C) 150 s (D) 200 s

Calculate the velocity of a 1650kg satellite that is in a circular orbit of 4.2 x 10^6m above the surface of a planet which has a radius 3.95 x 10^5 m and the period of the orbit is 2.0 hours.

A "conventional gear" tailwheel airplane has the center of mass aft of the two main wheels and a smaller, third wheel at the tail. a "tricycle gear" airplane has the center of mass forward of the two main wheels and the third wheel near the nose.