How much amount of crystal is fomed when 15 gm of a saturated solution prepared at 30 C is cooled to 100C. The solubility of that salt at 30C is 95 and at 10C is 30.​

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Explain that newton first law,second law and third law of motion?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.