Answer:
B
Explanation:
The mass of something before it's been processed is the same as it's mass after the process.
Answer:
it's false coz
Speed is a scalar quantity.
If f=140hz
speed=?
wavelength=?
without all information given, it would be difficult to answer but the formula is speed=frequency ×wavelength
It would be true because <span>In physics, the </span>kinetic energy<span> of an object is the </span>energy<span> that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this </span>energy<span> during its acceleration, the body maintains this </span>kinetic energy<span> unless its speed changes.</span>
