Based on my findings, within a period of 2 hours, there are certain atoms remaining.
N = N0 * 2^(-t/6.020) = N = N0 * 2^-0.33223 = 0.7943 N0
Thus, the quantity of atoms that undergo disintegration is N0 - N = N0 * (1 - 0.79430) = 0.2057 N0
This must equate to 15 mCi = 15 * 3.7 * 10^7 = 5.55 * 10^8 atoms
N0 = 5.55 * 10^8 / 0.2057 = 2.698 * 10^9 atoms
Consequently, 2.698 * 10^9 atoms represents the value of N0.
Answer:
d) v1 = v2 = v3
Explanation:
This can be determined through the principle of energy conservation. We assess the total mechanical energy E=K+U (the sum of kinetic energy and gravitational potential energy) at both the initial and final positions, ensuring they remain constant.
<pInitially, for the three spheres, we have:
Finally, for the three spheres, we see:
<pGiven that
, and since
remains identical for all spheres, it follows that
is identical for all spheres, indicating that
, the final velocity, is equal for each ball.
Answer:
Explanation:
As the baseball ascends, gravitational forces as well as air resistance act downward, whereas the displacement is moving upward which results in an angle of 180° between the force and displacement. Therefore, the work done by both the gravitational force and air resistance is negative, confirming option (d) as accurate.
The essential principle for this question is Ohm’s Law: V=IR, I=V/R, R=V/I. Therefore, the answer is (3) Resistance, as it is inversely related to Current (I=V/R).
A left turn lane is designated for vehicles making left turns. Vehicles must completely enter this lane and wait for a clear path before proceeding with the turn. It is not permissible for a vehicle to be partially in and out of the lane, as this obstructs traffic and creates hazardous conditions.
