Speed=0.3*100=30m/s
speed=0.1*50=5m/s
frequency=20/0,5=40HZ
frequency=80/0.2=400HZ
frequency=120/0.4=300HZ
wavelength=340/440=0.77m
wavelength=340/880=0.39m
wavelength=250/400=0.63m
speed=2*50=100m/s
speed=0.5*100=50m/s
Answer:
d. remains same
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;
Force = mass * acceleration
If both the mass of the body and the force acting on it are doubled, then acceleration remains the same.
Given the following data;
Mass = 2Mass
Force = 2Force
Substituting into the formula, we have;
Answer:
the lever in which the fulcrum lies in middle is first
t