How much heat is needed to raise the temperature of 6g of water by 20°c?

What is the relationship between the wavelength of a wave and it's energy?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves