Two questions: will mark

explain why a thrown foot ball have both potential and kinetic energy? what is the combined energy called?

use the picture for this one.
how do the principles of convection, conduction, and radiation explain how the water in the saucepan gets hot?

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

What is the formula that this ionic compounds could form sr2+p3-o2-

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space