Answer:
45
Explanation:
because the equation for speed is distance divided by time! hope that helps gave a nice day!
Answer:
70 cm
Explanation:
0.5 kg at 20 cm
0.3 kg at 60 cm
x = Distance of the third 0.6 kg mass
Meter stick hanging at 50 cm
Torque about the support point is given by (torque is conserved)

The position of the third mass of 0.6 kg is at 20+50 = 70 cm
They are attractive
They don’t depend on charge
False. That description fits the wave's 'frequency'.
It has nothing to do with refraction.