Answer: _Pulse Doppler RADAR_ type of RADAR routes the calculated Doppler shift through a series of frequency-filters (bandpass filters), which results in the ability to distinguish between targets of different velocities.
Explanation: A pulse-Doppler RADAR determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It merges the characteristics of pulse radars & continuous-wave radars, which were formerly distinct due to the complexity of the electronics.
<span>After collison they stick together and have same velocity Vf
From the momentum conservation,
(m1 + m2)Vf = m1v1 + m2v2
Second is moving with half of first cart speed, (m1 + m2)Vf = m1v + m2v / 2
2(m1 + m2)Vf = (2m1v + m2v) =>Vf = ((2m1 + m2) v) / 2(m1 + m2)
Identical carts so m1 = m2 = m
vf = 3mv / 4m => Vf = 3v / 4</span>
The velocity of sound in air is 358m/s
<h3>Calculations and Parameters</h3>
Given;
- Frequency= 256 Hz
- Water level= 30cm
- Position of resonance= 100cm
- The velocity of sound in air= ?
v= 2f(L2-L1)
= 2.2.56.(1- 0.3)
=358 m/s
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the cycle of the Moon through all its phases
Explanation:
The cycle of the Moon through all its phases is closely related to the unit of time that humans call month.
It takes 27 days for the moon to complete its orbit around the earth and this is equivalent to a month.
The moon is the earth's natural satellite and it revolves round it in every 27 days.
The moon passes through its different phases within this time period.
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