To find the number of electrons in a neutral gold atom look at it's atomic number. The atomic number is the number of protons in the element. For an atom to be neutral it needs the same number of electrons as protons, therefore the positive and negative charges will be balanced out. Gold's atomic number is 79 therefore it has 79 electrons.
Answer:
They would equally balance because of the chemicles.
Explanation:
Answer:
gamma rays only is the correct answer.
Explanation:
Every radiation has different penetrating power to penetrate in materials and the flow of particles through a material is called penetration power.
Penetrating power of the gamma rays is very high because it has no mass and charges that the reason it can travel far in the air than beta particles and alpha particles.
Alpha particles can be blocked by paper and beta particles can easily passes through paper but it cannot pass through aluminum sheet whereas gamma particles are hardest to blocked, gamma particles can be blocked by heavy shielding.
Thus the radiation can pass through sheet of metak and hit the target is only gamma rays.
Answer:
1272 pound
Explanation:
From the question given above, the following data were obtained:
Pressure (P) = 38 psi
Area (A) = 12 cm by 18 cm
Force (F) =?
Next, we shall determine the area. This can be obtained as follow:
Area (A) = 12 cm by 18 cm
A = 216 cm²
Next, we shall convert 216 cm² to square inch (in²). This can be obtained as follow:
1 cm² = 0.155 in²
Therefore,
216 cm² = 216 cm² × 0.155 in² / 1 cm
216 cm² = 33.48 in²
Finally, we shall determine the force exerted. This can be obtained as follow:
Pressure (P) = 38 psi = 38 lbf/in²
Area (A) = 33.48 in²
Force (F) =?
P = F/A
38 = F / 33.48
Cross multiply
F = 38 × 33.48
F = 1272 pound
Thus, the force exerted is 1272 pound
