Answer:
Explanation:
Maximum distance after which the motorist must have to stop is given as
now the distance after which the vehicle will stop on applying breaks is given as
now remaining distance is given as
now reaction time is given as
Answer:
D.Radiography uses ionizing radiation, but sonography does not.
Explanation:
Radiography is the process of using x-rays or gamma rays to capture images showing internal parts of the human body for medical examinations.X-rays are commonly used in this process.x-rays are categorized as a cancer causing agent thus exposure to such rays could cause development of cancer.In sonography, high frequency sound waves are used. There is no exposure to any ionization radiation like in radiography.
Answer:
198.505 N
Explanation:
Since this can be modeled as a point mass swinging system with the radius being the arm length. So r = 0.6m.
Also at it's lowest point the ape has a horizontal velocity v = 3.7 m/s. This velocity could result in a centripetal acceleration a, creating tension on the branch.
According to Newton's 2nd law, F = ma. So the tension is:
initial speed of the stuntman is given as
angle of inclination is given as
now the components of the velocity is given as
here it is given that the ramp on the far side of the canyon is 25 m lower than the ramp from which she will leave.
So the displacement in vertical direction is given as
by solving above equation we have
Now in the above interval of time the horizontal distance moved by it is given by
since the canyon width is 77 m which is less than the horizontal distance covered by the stuntman so here we can say that stuntman will cross the canyon.