<u>Answer:</u>
The gauge pressure is 6670.8 Pascal
<u>Explanation:</u>
Given the height is 0.68 m
The Gauge pressure is determine by the formula,
Gauge pressure , P = hdg
Where h = 0.68 m
d = 1000
g = 9.81
Substituting the values in the formula of Gauge pressure, we get
Gauge Pressure = hdg =
Gauge Pressure = 6670.8
Therefore, the gauge pressure is 6670.8 Pascal
Answer:
The right solution is "50200 days".
Explanation:
Given:
Calories intake,
= 6000 kcal,
or,
=
Force,
= 500 N
As we know,
⇒
Or,
⇒
By putting the values, we get
hence,
The number of days will be:
=
=
The work done is 46 J
Explanation:
The work done by a force pushing a body is given by
where
F is the magnitude of the force
d is the displacement of the body
is the angle between the directions of the force and of the body
In this problem:
F = 23 N
d = 2 m
(we assume the force is parallel to the displacement)
Therefore, the work done is
Learn more about work:
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Answer:
ambulance speed is 30.38 m/s
Explanation:
given data
hear frequency = 510 Hz
pass frequency = 427 Hz
speed of sound = 343 m/s
to find out
ambulance speed
solution
we consider here ambulance speed is v
so when we hear frequency velocity equation will be
510 = 343f / ( 343 - v ) ...........................1
and when ambulance pass velocity equation will be
427 = 343f / ( 343 + v ) ...........................2
so from equation 1 and equation 2
= 510 / 427
= 510 / 427
solve it we get
v = 30.38 m/s
so ambulance speed is 30.38 m/s