Emissive power question help needed!
The question is on emissive power emitted and i have attached it as a file
RELEVANT EQUATIONS
E=stefan Boltzmann constant * T^4
ATTEMPT
E=(5.67*10-8) * (923)^4
E = 41151.9
Don't know how to get the wavelength from this
should i use...
Simple Question About Pendulum I Can't Do !
The motion of the bob of a pendulum is described by
theta = 3cos(3t) - sqrt3 sin(3t)
where theta is the angle of the bob from the vertical. What is the amplitude of this motion??
as an attempt, as i know what the answer is, but just don't...
yea i just realized i don't no how to find the heat transferred as well but
i got the final pressure to be 15.8 bar and the final temp to be 328K and the work done to be 29KJ
ive done this by using the first equation above to find final P and PV=RT to find the final temp
is this right ...
the question is in the attachment. All i really want to know is when you have to find the final pressure and temperature do you use the equation
p1 v1^k = p2 v2^k
where k is the the polytrophic index
thanks