To solve this problem we will apply the concepts related to the conservation of momentum. By definition we know that the initial moment must be equivalent to the final moment of the two objects therefore
Here,
Mass of each object
Initial velocity of each object
= Final velocity of each object
Since the initial velocity relative to the metal tank is at rest, that velocity will be zero. And considering that in the end, the speed of the two bodies is the same, the equation would become
Rearranging to find the velocity,
Replacing we have that,
Therefore the velocity of the shark immediately after it swallows the tank is 
Answer:
Explanation:
Given that
F(x) = (2.00 N/m) x +(1.00 N/m3) x3.
Which can be written as
F(x) = 2x +x³ N/m
Potential energy from x=1 to x=2
P.E is given as
P.E=∫F(x)dx
P.E=∫2x+x³ dx. From x=1 to x=2
P.E= 2x²/2 + x⁴/4 from x=1 to x=2
P.E= x² + x⁴/4 from x=1 to x=2
P.E=(2²+2⁴/4)-(1² +1⁴/4)
P.E=(4+4)-(1+1/4)
P.E, =8-5/4
P.E=27/4
P.E=6.75J
Since it is moving from lower position to upper position, then P.E should be negative
P.E = - 6.75J
<span>The electromagnetic emissions from solar flares aren't much different from those produced by the rest of the sun, but do include somewhat higher levels of soft x-rays and low-energy gamma rays. These emissions are of course dwarfed by the normal output of the sun, and are of such low density by the time they reach Earth that they have no discernible effect on organic matter. </span>
Whenever light goes from transparent to another medium or from rarer to denser medium or vice versa, it's speed changes and hence light bends.
The answer is C. Electrical;mechanical
