One brand of dog whistles claims a frequency of 25 khz for its product. what is the wavelength of this sound? a 2.0 b 0.7 c 3.6 d 1.4

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

What object a collides with object b and bounces back its final momentum is?

Mga halaman/punong ornamental na di namumulaklak