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:
Impulse =14937.9 N
tangential force =14937.9 N
Explanation:
Given that
Mass of car m= 800 kg
initial velocity u=0
Final velocity v=390 km/hr
Final velocity v=108.3 m/s
So change in linear momentum P= m x v
P= 800 x 108.3
P=86640 kg.m/s
We know that impulse force F= P/t
So F= 86640/5.8 N
F=14937.9 N
Impulse force F= 14937.9 N
We know that
v=u + at
108.3 = 0 + a x 5.8
So tangential force F= m x a
F=18.66 x 800
F=14937.9 N
Jack Plane is designed to take off heavy shavings and squares up rough timber to correct size and quickly removes waste wood.
Answer:
It made information easily accessible and ensured individuals became more vast in subject topics of interest.
Explanation:
Information revolution is different and unique and it came with the advent of computers and the internet. A lot of information is stored there which is too large and complex for the human brain.This helped people to access information without much stress as informations about almost every subject is on the Internet.
Individuals can check the informations up and become more vast in interested topics.