Answer:
a) wet marble , dry marble, newspaper, and towel
Time = distance / speed
T = 125/ 5
T = 25 meters per second
Energy is the capacity of doing work
Momentum = mass x velocity
12 = 4 x v | ÷ both sides by 4
12 ÷ 4 =v
v= 3 m/s
11.3 Electromagnetic spectrum (ESADK)
EM radiation is classified into types according to the frequency of the wave: these types include, in order of increasing frequency, radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
