<span>Solar panels convert light energy from sunlight into electricity energy , Metalloid is most likely used in solar panels The answer is : </span> A metalloid is used because it is a semiconductor and can become more conductive when more light shines on it. Metalloids are shiny,<span> semiconductive and they are brittle.</span>
Explanation:
The two postulates of special theory of relativity
Postulate 1: The law of physics are invariant under any of inertial frame of reference.
Postulate 2: The velocity of light is remains same in each ans every frame of reference and independent of relativity.
They are differ from classical mechanics that in classical mechanics there is no change in mass and length in relative velocity but in relativistic mechanics it changes.
These two postulates implements in phenomenon like time dilation , length contraction etc.
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Jupiter because it’s completely gas.
Answer:
net work done by friction = - 2205 J
Explanation:
given,
mass of sled = 80 kg
slide down at an angle of 18°
length = 90 m
travel horizontally = 20 m before starting back up a 16° incline.
net work = ?
net work done by friction = change in potential energy
= mg (h_f - h_i)
= (75) (9.8) (- 27.81 + 24.81)
net work done by friction = - 2205 J
