Answer:
a soft foam material because soft materials absorb sound better
Answer:
KE + PE = KE + PE
Explanation:
In a closed system, the mechanical energy of the system is constant.
Mechanical energy is given by the sum of kinetic energy and potential energy; mathematically:
U = KE + PE
where
KE is the kinetic energy
PE is the potential energy
This means that if we consider two situations, one at the beginning and one at the end, the value of U will not change if the system is closed; this means that the sum KE + PE will remain the same, so we can write:
KE + PE = KE + PE
Answer:
There are layers on the Earth. There is gas on the Sun.
This means that the answer is...
D: Gas
Answer:
We weigh more on Earth because of gravity. Gravity pulls our body towards the Earh and hence our mass is more. But in space there is no gravity and thus the mass will accordingly be less due to absence of centre of gravity. Thus, mass is affected by the location of a body or an object in space.
Explanation:
Acceleration involves a change in speed and Direction
