Answer:
I think the sun is the right answer
<span>It would be hotter near the Earth's equator and colder near Earth's poles</span>
The 'spot' at the end of the laser beam moves in a circle. The radius of the circle is the distance between the laser and the spot.
The circumference of every circle is (2π) · (radius) .
The speed of the spot is (distance) / (time) .
Speed = (circumference) / (time to turn once around the full circle)
<u><em>Speed = </em></u>
<u><em>(circumference) · (nr of revs) / (second) .</em></u>
(a). Speed = (2π) (8km) · (9 rev) / sec
Speed = (2π · 8 · 9) km/sec
Speed = 144π km/sec
<em>Speed = 452.4 km/sec</em>
(b). Speed = (2π) (16km) · (9 rev) / sec
Speed = (2π · 16 · 9) km/sec
Speed = 288π km/sec
<em>Speed = 904.8 km/sec</em>
(c). 300,000 km/sec = (2π · distance) · (9 / sec)
300,000 km = (18π · distance)
Distance = 300,000 / 18π km
<em>Distance = 5,305 km</em>
Answer:
9.877 m/s^2
Explanation:
The acceleration can be computed from ...
d = (1/2)at^2
(1600 m) = (1/2)a(18 s)^2
a = (1600/162) m/s^2 ≈ 9.877 m/s^2
The smallest particle of an element that still retains all the element's properties is a(n) _____. atom .... but many particles inside