Answer: Its the last one: The position of the block will change
Explanation: Since the forces are unbalanced, one side of the block will be stronger, therefore making the block move.
Answer: A
Explanation: Any short-duration exercise that is powered primarily by metabolic pathways that do not use oxygen. Examples
of anaerobic exercise include sprinting and weight lifting.
Answer:
The mass of the hailstone is 
Explanation:
From the question we are told that
The mass of the hockey puck is 
The initial speed of the puck is 
The final speed of the puck is 
According to the principles of linear momentum
At initial the velocity of the hailstone was zero so
So
substituting values
=> 
=> 
=>
Answer: a) 0.315 (V/L)
Explanation:
From Conservation of angular momentum, we know that
L1 = L2 ,
Therefore MV L/2 = ( Irod + Ib) x W
M/4 x V x L/2 = (M (L/2)^2 + 1/3xMxL^2) x W
M/8 X VL = (ML^2/16 + ML^2 /3 )
After elimination we have,
V/8 = 19/48 x L x W
W = 48/8 x V/19L = 6/19 x V/L
Therefore W = (0.136)X V/L
<span>A. An insulator slows the flow of heat.
and
</span><span>B. A conductor increases the flow of heat.
are both correct!</span>
