Answer:
Kidney
Explanation:
One of the main function of the kidney is to maintain the homeostasis of sodium and potassium ions in the blood and body.
Aldosterone is a key steroid hormone that balances sodium and potassium ions in the blood and body fluid. Potassium and sodium ions generate electric impulse in the body which helps to perform different activities such as muscles flexing.
Kidney function for reabsorption and secretion, in which reabsorption of Na is done nd balances the sodium and potassium in the blood and body.
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.
Answer:
2.58 m/s
Explanation:
We can use the following equation of motion to find out the constant acceleration of the block:
where v = 3.8 m/s is the final velocity after it has traveled 7.4 m, is the initial velocity of the block when it starts from rest, , and is the distance traveled.
We can use the same motion equation to calculate block speed at the end of 3.4m track
Answer:
9.31%
Explanation:
We are given that
Mass of KBr=49.3 g
Volume of solution=473 mL
Density of solution =1.12g/mL
We have to find the mass% of KBr.
Mass =
Using the formula
Mass of solution=
Mass % of KBr=
Mass % of KBr=
Mass % of KBr=9.31%
Hence, the mass% of KBr=9.31%