A student is making a cup of hot chocolate. They want to add hot chocolate mix to water to make a 60% solution of hot chocolate. If they have 100 units of water, how many units of chocolate mix is there? - 90 units
- 15 units
- 60 units
- 30 units

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

Atomic nuclei of almost all elements consist of

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to