Answer:
Approximate freezing level is at 5350 feet.
Explanation:
We know that the standard lapse rate equals 
per 1000 feet
and freezing occurs at a height where the temperature becomes equal to
Thus the standard equation of temperature at any height becomes
The constant 'c' can be obtained by using the boundary condition that at
h=1350 feet temperature equals 
Thus the height at which temperature becomes zero equals
Answer:
b i took the test like a week ago trust me
Explanation:
Answer:
a) F = μk mg Cosθ
b) F = 279.78 N
Explanation:
a) F = μk R
Based on the description in the question, the horizontal reaction is:
R = mg Cosθ
The force required to move the box with constant speed in terms of m, μk, θ, and g is :
F = μk mg Cosθ
b) If m = 90 kg
g = 9.8 m/s²
μk=0.35
θ = 25⁰
Force required to slide the 90-kg patient across a floor at constant speed by pulling on him at an angle of 25∘ above the horizontal will be:
F = μk mg Cosθ
F = 0.35 * 90 * 9.8 * cos25
F = 279.78 N
Answer:
have tried it and the units end up being Nm^-2 (the unit of stress) however the unit for joules is Nm.
Source https://www.physicsforums.com/threads/why-does-1-2-stress-strain-equal-the-energy-stored-per-unit-volume-in-a-wire.565495/
