Answer:

Explanation:
given,
wavelength, λ = 50 cm
speed, v = 4 m/s
Amplitude, A = 5 cm
general equation of the wave along x- axis

sign is positive when wave is traveling in negative direction
now,



inserting all the values

Hence, the y-equation of wave is equal to 
False the correct answer is chemical bonds instead of thermal energy
Answer:
C 2000v its obviously ans because if o is 1000 2 vo is 2000v
Answer:
In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy. ... Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. Only their arrangement, energy and movement changes.
Explanation:
this is true because if you think about it if you put a pill in a glass of water it dissolves its like particles