A box having a mass of 5.00 kg is lifted 75.0 cm from ground level to the top of a desk. What is the gravitational potential energy of the box on the desktop? Show your work.

Which statement correctly describes the relationship between frequency and wavelength?

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

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