Answer:
The rate of heat loss from the pipe by natural convection is 4×10^-4 kW.
Explanation:
Q = kA(T1 - T2)/L
k is heat transfer coefficient = 25 W/m^2.°C
A is area of the pipe = πd^2/4 = 3.142 × 0.07^2/4 = 3.84895×10^-3 m^2
T1 - T2 is change in temperature = 80 - 5 = 75°C
L is length of the pipe = 18 m
Q = 25 × 3.85895×10^-3 × 75/18 = 0.4 W = 0.4/1000 = 4×10^-4 kW
Answer:
464.373 ft / s, 43200 ft/s²
Explanation:
200 mi/h = 293.333 ft/s
3 mi/h² = 3 × (1 ft / s² / 2454.5454) = 0.0012222 = acceleration of the airplane
velocity of the rotating propeller Vr = ωr where ω is the angular rate = 120 rad/s and the radius = 6 ft /2 = 3 ft = 120 × 3 = 360 ft / s
Velocity of the particle = resultant of the velocities = √ ( 293.333² + 360² ) = 464.373 ft / s
centripetal acceleration = Vr² / r = 360² / 3 = 43200 ft/s²
acceleration of the particle = resultant accelerations = √ ( 0.001222² + 43200²) = 43200 ft/s²
Referred to as Carrier Frequency
The designers suggest that speech recognition allows for spoken interaction or conversation and spoken prompts or commands.
Explanation:
The speech recognition is used when the user has physical impairments and hands are busy, eyes are occupied and the user cannot read.
We can save time with the usage of speech recognition system. The users are knowledgeable based on the actions available.
The problems faced in speech recognition system are in the noisy environment it has bad microphones and the commands should be learned and remembered.
The other obstacle is error correction is time consuming. the speech production has slow space to speech output provides privacy in public spaces. The disadvantage is it contains large amount of information.