2. The expression of a stationary wave is given by y = 0.3 cos 0.51x sin 60
Where y and x in meters and t is in seconds.
i. Write the expression for two progressive waves resulting the stationary wave above.
ii. Determine the wavelength, frequency, amplitude, and velocity for both progressive waves.
[Ans: 4 m, 30 Hz, 0.15 m, 120 m s']

Please help me i have a test tomorrow and i haven’t sleep yet because of this work

La olla es de metal por que se calienta mas rápido, y las manijas son de madera por que así no se calientas y tienden a estar mas frías.

The magnets are probably damaged or there not strong enough to attached to the refrigerator

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.