The mean distance is 44.81 AU
Keppler's 3rd Law formula
T is the orbital period, unit is in Earthly years
r is the mean distance of a planet from the Sun, unit is in AU
Astronomical units (AU) is a unit for length which is the distance of the Earth to the Sun.
T = 300 revolutions
Take note: that 1 revolution around the sun is equivalent to one (1 ) year, , therefore 300 revolutions = 300 years
Solving the problem
Using Keppler's 3rd Law formula
Substitute the given information
r = 44.814 AU
Therefore, the mean distance of the planet from the sun is 44.814 AU.
To learn more, just click on the following links:Distance of the Earth to the Sun
Why do planets orbit the sun
you would have the largest mass of gold if your chunk of gold weighed 1 N on the
Note: Your question is incomplete: I will answer the question hope it satisfy your expectation.
You need more mass of gold in place with lesser acceleration due to gravity.
Force Is measure by mass × acceleration (gravity) (F = ma)
Since force is constant the relationship between mass and acceleration is inversely proportional, the lesser the acceleration the higher the mass.
Example in finding the mass (mass = Force ÷ acceleration)
Force is constant 1 N or 1 kg.m/s².
Earth Moon Jupiter
Force 1 kg.m/s² 1 kg.m/s² 1 kg.m/s²
Acceleration 9.8 m/s² 1.62 m/s² 24.79 m/s²
mass 0.102 kg 0.617 kg 0.040 kg
Moon has lesser acceleration, thus needs more mass to have force of 1N
The data above shows you need more mass in areas with lesser acceleration if force is constant 1 N.
Hope it helps=)
If we check A. , Americium 242, it has low penetration of alpha radiation and it was obvious that it was radioactive as the sign says. I said it was radioactive because it was made from bombarding uranium-238 with alpha particles (helium nuclei). An alpha particle was made from two protons and two neutrons. Proton and neutrons are both have strong interactions.
If we check B. , Mg-24 or Magnesium 24, it was only use to study heart disease. Magnesium helps us to maintain normal nerves and muscle functions, supports a healthy immune system, keeps the heartbeat steady, help bones remain same, regulate blood glucose levels, and aid in the production of energy and air. So it was not RADIOACTIVE, since it was useful.
If we check C. and D. , Plutonium-241 captures a neutron and Uranium-238 can be converted into plutonium-239. To produce plutonium-239, atoms of uranium-238 are exploded to neutrons. So I say, these two are RADIOACTIVE.
FINAL ANSWER: B. MG-24 OR Magnesium-24
This is due to Newtons first law of motion.
While she drives to work, the whole system of vehicle is in the state of motion(including book and driver). When she applies brake vehicle stops, but driver and book continues the state of motion cauz braking force is only applied to vehicle. As a result, book falls down.