Answer:
14.79 kgm/s
Explanation:
Data provided in the question
Let us assume the mass of baseball = m = 0.145 kg
The Initial velocity of pitched ball =
= 47 m/s
Final velocity of batted ball in the opposite direction =
= -55m/s
Based on the above information, the change in momentum is

= 14.79 kgm/s
Hence, the magnitude of the change in momentum of the ball is 14.79 kg m/s
Answer:
The minimum thickness of the oil is 77.55 nm
Explanation:
Given:
Refractive index of oil 
Refractive index of water 
Wavelength of light
m
From the equation of thin film interference,
The minimum thickness is given by,

Where
,
thickness
Here we have to find minimum thickness so we use



m
nm
Therefore, the minimum thickness of the oil is 77.55 nm
More compressed. moving up = apparent weight (i.e., your norma force) is greater. this means you’ll weighr more and push those springs down even more than you would at rest.
With weather ballons carry instruments to measure the temperature ,pressure,wind direction and wind speed