Answer:
13.23J
Explanation:
PE = m*g*h
PE = (3 kg ) * (9.8 m/s/s) * (0.45 m)
Answer:
Explanation:
l = 600mm = 0.6m
d = 40mm = 0.04m
hd = 30mm = 0.03m (diameter of the hole)
hl = 100mm = 0.1m (hole length)
modulus of elasticity for the aluminium = 85GN/m2
compressive load = 180kN
The easiest way I know to explain it is this:
-- Take a flashlight and a ball into a dark room.
-- Turn on the flashlight and point it at the ball.
-- Half of the ball is lighted up by the flashlight, and the other half is dark.
-- There is no way you can turn or twist the ball to make more or less
than 50% of it lighted up and more or less than 50% of it dark.
<em>Everything</em> in the solar system ... as long as it's shaped like a ball ... is
half illuminated by the sun and half dark.
The wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
