Which of the following is NOT TRUE for an oscillating pendulum as shown in figure? A
The law involved is the law of conservation of energy.
B
Potential energies at the end points (A and D) are the same.
C
Two forms of energy are involved - potential and kinetic energy.
D
The potential energy is the lowest at the end points (A and D) and the kinetic energy is at the lowest at the mean position (E).

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids

How hot is the suns corona? (integrated science)

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]