It pushes the currents to opposite sides
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:
I think its c) no unit
Explanation:
jus took test and got a 100
F12=(8.98×10↑9 m/f)(1C)(-4C)/(4m)↑2=(8.98×10↑9 N·m↑2/c↑2)(-0.25C↑2/m↑2)~2.25×10↑9N i hope thats right
Answer:
Explanation:
m1 = 3.77 kg (0, 0 )
m2 = 6.7106 kg ( 5.72 cm, 11.44 cm)
m3 = 2.46181 kg (16.7024 cm, 0 cm )
Let x and y be the coordinates of centre of mass.
x = 6.1428 cm
y = 5.9316 cm