Explanation:
For North America,
Power, P = 26 W
Voltage of AC razor, V = 120 V
For Europe,
Voltage of AC razor, V' = 220 V
The power of razor in North America is given by :
Let P' is the power consumed by razor in Europe. Now,
So, the razor consumed 87.38 watts of power as it is ruined.
The moveable type drastically changed society. Its primary impact was the distribution of knowledge. Since people could now type books, rather than handwriting then, literary works could be shared faster than ever before. This had a massive impact on education.
Answer:
gravity
Explanation:
keeps the ball down on the surface
The speed of the roller coater at the bottom of the hill is 31 m/s.
<h3>
Speed of the roller coater at the bottom of the hill</h3>
Apply the principle of conservation of mechanical energy as follows;
K.E(bottom) = P.E(top)
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
- v is the speed of the coater at bottom hill
- h is the height of the hill
- g is acceleration due to gravity
v = √(2 x 9.8 x 49)
v = 31 m/s
Thus, the speed of the roller coater at the bottom of the hill is 31 m/s.
Learn more about speed here: brainly.com/question/6504879
#SPJ1
