This question is false because it is not hot or cold every single day
Answer:
Explanation:
Since the surface is frictionless, momentum will be conserved. If the bullet of mass 
has an initial velocity 
and a final velocity 
and the block of mass 
has an initial velocity 
and a final velocity 
then the initial and final momentum of the system will be:
Since momentum is conserved, 
, which means:
We know that the block is brought to rest by the collision, which means 
and leaves us with:
which is the same as:
Considering the direction the bullet moves initially as the positive one, and writing in S.I., this gives us:
So kinetic energy of the bullet as it emerges from the block will be:
To determine the period of a wave you need not utilize the value for the wave speed.
The formula for the period is T= 1/f
T stands for period/time while f is for frequency. Substitute the value for the frequency which is 60 Hz. That would give you:
T= 1/60 Hz
convert Hz to cycles per second to extract the unit of time (s).
60 Hz x 1/s/1 Hz= 60/s
To continue the computation:
T=1/60/s that will give you a T= 0.017 s or 17 ms.
<span>The answer is a heterogeneous mixture. Mixtures can be homogeneous and heterogeneous. If a solid and a liquid of a mixture cannot be separated and the difference between them is not visible, it is called homogeneous mixture (or solution). If a solid and a liquid of a mixture are visible and can be separated easily, the mixture is called heterogeneous.</span>
Answer:
your questions are not clear
