Forge welding is a process in which two pieces of steel are joined together by heating the pieces of steel and hammering them together. A welder takes a piece of steel from a forge at 1600 o F and places it on an anvil where the outdoor temperature is 50 o F . The temperature of the steel T in o F can be modeled by T = 50 + 1550 e − 0.05 t , where t is the time in minutes after the steel is removed from the forge. How long will it take for the steel to reach a temperature of 100 o F so that it can be handled without heat protection? Round to the nearest minute.
Forge welding is a process in which two pieces of steel are joined together by heating the pieces of steel and hammering them together. A welder takes a piece of steel from a forge at 1600 o F and places it on an anvil where the outdoor temperature is 50 o F . The temperature of the steel T in o F can be modeled by T = 50 + 1550 e − 0.05 t , where t is the time in minutes after the steel is removed from the forge. How long will it take for the steel to reach a temperature of 100 o F so that it can be handled without heat protection? Round to the nearest minute.
Forge welding is a process in which two pieces of steel are joined together by heating the pieces of steel and hammering them together. A welder takes a piece of steel from a forge at
1600
o
F
and places it on an anvil where the outdoor temperature is
50
o
F
. The temperature of the steel
T
in
o
F
can be modeled by
T
=
50
+
1550
e
−
0.05
t
,
where t is the time in minutes after the steel is removed from the forge. How long will it take for the steel to reach a temperature of
100
o
F
so that it can be handled without heat protection? Round to the nearest minute.
The value of cos(4M) where M is the magnitude of the vector field with potential ƒ = e² sin(лy) cos(π²) at
x = 1, y = 1/4, z = 1/3 is
0.602
-0.323
0.712
-0.816
0.781
0.102
0.075
0.013
There is exactly number a and one number b such that the vector field F =
conservative. For those values of a and b, the value of cos(a) + sin(b) is
(3ay + z, 3ayz + 3x, −by² + x) is
-0.961
-0.772
-1.645
0.057
-0.961
1.764
-0.457
0.201
A: Tan Latitude / Tan P
A = Tan 04° 30'/ Tan 77° 50.3'
A= 0.016960 803 S CA named opposite to latitude,
except when hour angle between 090° and 270°)
B: Tan Declination | Sin P
B Tan 052° 42.1'/ Sin 77° 50.3'
B = 1.34 2905601 SCB is alway named same as
declination)
C = A + B = 1.35 9866404 S CC correction, A+/- B:
if A and B have same name - add, If
different name- subtract)
=
Tan Azimuth 1/Ccx cos Latitude)
Tan Azimuth = 0.737640253
Azimuth
=
S 36.4° E CAzimuth takes combined
name of C correction and Hour Angle - If LHA
is between 0° and 180°, it is named "west", if
LHA is between 180° and 360° it is named "east"
True Azimuth= 143.6°
Compass Azimuth = 145.0°
Compass Error = 1.4° West
Variation 4.0 East
Deviation: 5.4 West
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