The printing press had dramatic effects on European civilization. Its immediate effect was that it spread information quickly and accurately. This helped create a wider literate reading public.
DO YOU HAVE THE ENGLISH TRANSLATION?
Answer:22.6g
Explanation:
Mass of water(mw)=1liter=1000g
Final temperature=20°C
Temperature of ice=0°C
Temperature of water=56°C
Change in temperature of water=56-20=36
change in temperature of ice=20-0=20
Specific heat of water=1cal/g°C
Latent heat of ice=79.7cal/g
1000x1x36=mx79.7x20
36000=1594xm
Divide both sides by 1594
36000 ➗ 1594=1594xm ➗ 1594
22.6=m of ice
m of ice=22.6g
Answer: 463.83 m/s
Explanation:
The question in english is:
<em>If the circumference of the Earth is 40075 km, At what speed does a person who is on the equator move?</em>
<em></em>
We need to find the tangential speed 
of a person that is on the Earth's equator (assuming the Earth moves following a uniform circular motion) and we onle have the value of the circumference 
of the planet as data.
Since we assumed we are dealing with uniform circular motion, the tangential speed is expressed as:
(1)
Where:
is the angular frequency
is the diameter of the Earth
is the period of revolution of the Earth (1 day)
On the other hand, the circumference of a sphere (assuming the Earth has this shape) is given by the following equation:
(2)
Where 
in this case.
Clearing :
(3)
(4)
Substituting (4) in (1):
(1)
(5)
Finally:
(6)
First we shall look at some terms:
Velocity - frequency of change of an objects position.
Acceleration - frequency of change of an objects velocity
Since velocity covers both change in direction and speed, we can asume that the answer is B, not because it's the only one we worked with, but because the others don't make any sense:
A - this is not correct, because a chnage in direction can be done withough a change in speed.
C - The scientific definition of acceleration does include speed, and this is not a reasonable answer.
D - Velocity can change, unlike said in the sentence.
Hope it helped,
BioTeacher101
