The emissive power of a black body depends on the fourth power of the temperature and is given by W = A T4 Where, W = emissive power, BTUs per square feet per hour A = Stefan Boltzmann constant, 0.171 x 10-8 T = temperature,° Rankine what is the value of A units in J/(m2.

Wavelength (um) Refractive index in water 2.0 1.1 × 10-3 2.89 x 10-4 9.56 × 10-4 3.17 x 10-3 What are the 2.2 2.4 angles of refraction when 2.6 light enters and exits a water droplet, forming a rainbow in the A case of non- Li-r visible 2.0 - 2.6 um microwaves 'B 180°-2r (First order rainbow)

3. If the source documentation says that the gamma-ray exposure rate at a distance of 102 cm is 25.8 µC/kg/h air kerma and we wish to calibrate the 0.11 mGy/h air kerma midpoint on the scale of an instrument that measures 0-25 mR/h air kerma, at what distance from the calibration source should the detector be placed?

Find the point of view lines of the given

You are shocked to learn that the Sun (which has a mass of 1M⊙) and Betelgeuse (with a mass of 11M⊙) have both become black holes overnight. Which black hole would have a larger event horizon and why? What do you experience if you fly your spaceship towards the Betelgeuse black hole? Describe any effects on you or the spaceship What would an observer on the other side of the galaxy see when looking at the black holes against the background of the rest of the stars in the Milky Way?

三年 SKETCH THE APPROPRIATE AUXILIARY VIEW. H 1 207

a. What does it mean when we say that a surface 'sees itself' in the context of radiative heat transfer? b. If heat transfer by conduction through a medium occurs under steady- state, will the temperature at a particular location vary with time? Will the temperature vary with location in the medium?

Attached is the question and the formula to solve it. I attached the formula directly from the book, the Blackbody radiation Pressure formula that is. Thank you :)

TEOLOG Q1(a): Taking X as the lowest view point, sketch the isometric view of the part. NERST TEKNOL

A spherical radiator has a radius of 3ft and emissivity of 0.5. If radiates 6000 Btu/hr of heat at 3000R, what is the temperature of a surface affected by its radiation?