The specific heat of a substance varies with temperature according to c = 0.93 +0.217T+ 0.07072,
T^2, with T in degrees C
and c in cal/g. K. Find the energy required to raise the temperature of 6.3 g of this substance from 1.0°C to 21 degrees celsius?
21°C

70 give a real life example showing how sensory neurons work with the motor neurons

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?