Melody has decided to use an inclined plane that is 600cm long to help move a speaker that weighs 450N from the gym floor onto the stage as it is too heavy to lift. The stage is 1.55m high and Melody has to apply 200N of force to move the speaker up the plane. How much work does Melody have to do to move the speaker to the top of the stage using the inclined plane?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

If element x has 99 protons how many electrons does it have

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?