Physically, because of environmental factors such as air, and water. Create corrosion which in turn erode the rock.
Answer:
a) 2.85 m/s
b) -24.01 m/s
c) 1
Explanation:
From the question, we can attest that the motion of the fish that was dropped by the seagul is that of a projectile motion. This motion is made up of two other motions which are, a horizontal uniform motion and a vertical motion, at constant acceleration. From the question, we are asked to find the horizontal motion. And then, the horizontal component of the fish's velocity does not change, therefore its the horizontal component of the fish's velocity is 2.85 m/s
To find the vertical component of the fish's velocity, we use the equation
v(y) = u(y) + gt
Where u(y) is the initial velocity which is zero, and g is the acceleration due to gravity which is -9.8 m/s. We are also told from the question that it took 2.45 s, and that's our time t. Applying this into the equation, we have
v(y) = 0 + -9.8 * 2.45
v(y) = -24.01 m/s
For the 3rd part, the horizontal component of the fish's velocity would decrease
It’s a curiously worded question. Ionizing radiation is that which is typically seen as most damaging to life causing “radiation sickness” and of the three forms, alpha and beta particles are less damaging than gamma rays when outside the human body and are both more easily blocked whereas gamma rays are most penetrating and likely to be lethal. The question talks about being absorbed by the tissue which may be a significant emphasis, I don’t know. If it means something that could be inhaled or injested then it is possibly restricting the answer to just alpha or beta particles and of the two beta is seen as more harmful typically. However on balance I think the question is referring to gamma rays.