They are both good conductors if both heat and electricity due to the sea of delocalized electrons that is floating around without getting bonded to an atom.
Such electrons can flow around freely to conduct heat and electricity.
Weight = (mass) x (gravity)
From this simple formula for weight, you can see that
an object's weight is directly proportional to the acceleration
of gravity in the place where the object is located.
If the object weighs 350 N on Earth and 134 N on Mars, then
we can write
(9.8 m/s²) / 350 = (Mars gravity) / 134
Multiply each side by 134:
Mars gravity = (134/350) x (9.8 m/s²)
Mars gravity = 3.75 m/s²
(The official, accepted value is 3.71 m/s² .)
A scientific law is a principle that describes the behavior of a natural phenomenon.
Example: Newton's Laws of Motion
The object takes 8 s to reach a velocity of 48 m/s south
Explanation:
Since the motion of the object is a uniformly accelerated motion, we can use the following suvat equation:
v = u + at
where
v is the velocity at time t
u is the initial velocity
a is the acceleration
t is the time
For the object in this problem, choosing south as positive direction, we have:
u = 16 m/s
v = 48 m/s
So we can solve the equation for t to find the time taken for the velocity to change from 16 m/s to 48 m/s:
Learn more about accelered motion:
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Answer
D.Diffraction
Explanation
Diffraction is a property that is experienced by waves when they come across a barrier when they are in motion.
The ways tends to curve behind the barrier. This is called diffraction of waves.
Now, sound is a wave and it also experience diffraction. . So the brother will be able to hear the sound due to diffraction