D is the best answer. In many physics problems we treat an extended object as if it were a point with the same mass located at the center of mass.
According to Newton's Second Law of motion, the net force acting on the object is equal to its mass multiplied by its acceleration. In formula, it is written as
Net Force =mass * acceleration
Net force = 25 kg * 5m/s^2
Net force = 125 Newtons
Answer:
the frequency of this mode of vibration is 138.87 Hz
Explanation:
Given;
length of the copper wire, L = 1 m
mass per unit length of the copper wire, μ = 0.0014 kg/m
tension on the wire, T = 27 N
number of segments, n = 2
The frequency of this mode of vibration is calculated as;

Therefore, the frequency of this mode of vibration is 138.87 Hz
Answer:
D, if the sun was removed, all the planets would go flying off into space.
Explanation:
Answer:
The population growth rate is the rate at which the population changes in size.
Explanation:
The rate of change is determined by subtracting the number of people that leave the population, through death or emigration, from the number of individuals that enter the population, through birth or immigration.