Answer:
Explanation:
Given
Distance between home and school is 39 km
Total time taken
i.e.
Total Distance traveled =39+39+39=117 km
displacement=39 km
Thus Average speed
Average velocity
Answer:
d) electrons removed.
Explanation:
Two insulators are electrically neutral, that is, the number of electrons and protons are equal. When one insulator is rubbed against another, electrons are removed from one of the insulators due their high mobility. The insulator which lost the electrons becomes positively charged while the one that gained the electron becomes negatively charged.
Therefore, when rubbing two insulators together, the one that gets a positive charge has had electrons removed.
.6(9.81)(3)
=17.65
18 J
2 significant figures
Answer: Voltage = (current) x (resistance)
Voltage = (1.5 A) x (2 ohms)
In order to MAKE 1.5 A of current flow through the toy car, you have to PROVIDE 3 volts from the battery.
If they both start from rest, and accelerate at the same rate, and A accelerates for twice as long as B does, then A ends up with TWICE the speed that B has.