How much heat in kcal is required to change 0.5 kg of ice, originally at - 10 0 * c into steam at 110 c? constants needed in the problemlatent heat of fusion=79.7 kcal/kg specific heat of ice=0.5 kcal/kg/k ; latent heat of vaporization ation = 539 kcal/kg ; specific heat of water 1.0 kcal/kg/k specific heat of ieam=0.480 kcal/kg

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

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?

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?