Objects with less density than water will float when you put them in water.
Objects with greater density than water will sink when you put them in water.
The answer is C radio waves are very high energy mechanical waves.
It is used to classify the climates around the world
Answer: 2kg
Explanation:
This problem is a textbook conservation of momentum problem. The intial momentum is equal to the final momentum. For the initial state of each block, only the first one was moving. Then they both combine to move together.
Pi = Pf
with p = mv
(6kg)*(4m/s) = (6kg+xkg)(3m/s)
Let x equal the unknown mass of block 2
24 = 18 + 3x
6 = 3x
x = 2kg