Answer:
The position after 3 minutes is - 800 m.
Explanation:
speed, v = 100 m/s
time, t = 3min = 180 s
initial position, x = 1000 m
let the distance traveled in 3 minutes is d
d = 100 x 180 = - 18000 m
So, the position is
= - 18000 + 1000 = - 800 m
Answer:
Explanation:
Radiation is often categorized as either ionizing or non-ionizing depending on the energy of the radiated particles. Ionizing radiation carries more than 10 eV, which is enough to ionize atoms and molecules and break chemical bonds. This is an important distinction due to the large difference in harmfulness to living organisms. A common source of ionizing radiation is radioactive materials that emit α, β, or γ radiation, consisting of helium nuclei, electrons or positrons, and photons, respectively. Other sources include X-rays from medical radiography examinations and muons, mesons, positrons, neutrons and other particles that constitute the secondary cosmic rays that are produced after primary cosmic rays interact with Earth's atmosphere.
Answer:
gravitational force is a force while gravity is a fundamental quantity
Explanation:
Answer:
False.....................................
If a material blocks gamma radiation, then it will probably protect against alpha and beta radiation. Alpha particles are large and slow-moving, thus having very little penetrating power. Beta particles are fast-moving, and can penetrate the human flesh up to 1 or 2 centimeters. Gamma particles, however, have great penetration and can easily pass through the human flesh.