The fluid that is being passed through the syringe and needle is incompressible, which means that it will transmit pressure equally. Therefore, the pressure on the plunger will be equivalent to the pressure on the needle. We also know that:
Pressure = Force / Area
Pressure on plunger = 4 / (π*(0.012/2)²)
Pressure on plunger = 35.4 kPa
Pressure on needle = 35.4 kPa
35.4 kPa = F / (4 / (π*(0.0025/2)²)
F = 0.17 N
The force on the needle is 0.17 N
True, an object at rest stays and rest and an object in motion stays in motion
Answer:
write your question properly
A. The difference lies in the intensity of the activity
Answer : The wavelength of the radio waves is 
Explanation : Given,
Frequency = 
Wave speed = 
As we know that the speed of a wave is related to its frequency and wavelength.
Formula used:
where,
is the wave speed in metres per second, (m/s
)
f is the frequency in hertz, (Hz
)
is the wavelength in metres, (m)
Now putting all the given values in the above formula, we get:
Therefore, the wavelength of the radio waves is
