Answer:
1300 Hz
Explanation:
f' = Actual frequency = 4.8 MHz
f = Observed frequency
= Relative velocity of blood = 0.21 m/s
v = Velocity of ultrasound = 1540 m/s
From the Doppler effect formula we have
Frequency shift is given by
The frequency shift in the sound is 1300 Hz
Answer:
<h3>The answer is 2400 J</h3>
Explanation:
The work done by an object can be found by using the formula
<h3>workdone = force × distance</h3>
From the question
force = 600 N
distance = 4 m
We have
work done = 600 × 4
We have the final answer as
<h3>2400 J</h3>
Hope this helps you
Answer:
here w means work done as we can see that it is the formula for work done where f is force and d is distance travelled. Hope it helped :-)
Explanation:
Answer:
m = 48.93kg
The load is 48.93kg.
Explanation:
Given;
Power P = 100watts
Efficiency e = 60% = 0.60
distance d = 10 m
time taken t = 80 s
Acceleration due to gravity g = 9.81m/s
Workdone W can be expressed as;
W = ePt = Fd = mgd
ePt = mgd
Making m the subject of formula;
m = ePt/gd
Substituting the values;
m = (0.60×100×80)/(9.81×10)
m = 48.93kg
The load is 48.93kg.
