46) A bicyclist riding at 12 km/h doubles her speed traveling along a flat trail Which statement most accurately describes
a graph of her kinetic energy from the time she increases her speed?
A)
a straight line with y intercept at zero and a positive slope
B)
a parabolic line with y intercept at zero and a positive stope
C)
a straight line with y intercept at the kinetic energy when her speed is
increased, with a positive slope
a parabolic line with y intercept at the kinetic energy when her speed is
increased with a positive slope
D)

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light