The answer would be: element helium
Answer:
Given:
Initial velocity of the asteroid, v = 19.9 km/s = 19900 m/s
(since, 1km = 1000 m)
Final velocity of the asteroid, v' = - 18.3 km/s = -18300 m/s
time period, T = 1.97 years
Solution:
(a). Total change in velocity, :
= v' - v
= - 18300 - 19900 = - 38200 m
here, negative sign is indicative of the fact that the motion of the asteroid is in the downward direction.
(b) Asteroid's average acceleration, a:
a =
a =
a =
Here, the negative sign is the indication of deceleration of the asteroid in the downward direction.
Answer:
Instrumentos Para Medir La Temperatura
Termómetro de máxima y mínima:
Termómetro metálico:
Pirómetro:
Termohidrógrafo:
Answer: D. 102m
Explanation: Because if you subtract 67m-16m=51. 51 +51 is 102m
Ptolemy believed in the theory that the earth was the center of the universe (geocentric) and it is not moving in the center while Copernicus later proposed otherwise, in his heliocentric theory he believed that the sun was the center of the universe but it was not moving. Both theories were influenced by their observation of how the light shade from the sun changes during the day, and also through observation of other celestial bodies whose light intensity changes which made them arrived to the conclusion that they are not equidistant nor stationary with respect to earth.